JetBlack WhisperDrive Smart Trainer: An Interim Review


One of the challenges with writing reviews that the whole world will see, especially on products that are in relatively limited supply, is what happens when things aren’t finished baking yet.  Not in the sense of a transient bug that you might see on a Garmin/Polar/GoPro product, but rather a pile of issues that just kinda make you step away from the product and say: ‘It’s not ready yet, maybe some day, but today is not that day.’

In general, I try and balance that as best as possible – especially right after a product releases.  It’s why I specifically only release in-depth reviews on final hardware/software.  Everything else gets a label of ‘Hands-on’ or ‘First Look’, usually with an additional note in the first couple paragraphs explicitly saying it’s not a review.

But this is different.  This is, after all, a final and finished product that you can buy today from various retailers.  It is new, however.  And therein appears to lie the challenge.  But this challenge is somewhat compounded by circumstance. As it is, the company sent me this 50-pound trainer to test while I’m down in Australia, but I have zero desire to add that to my already extensive airline luggage bill when I head back next week.

Unfortunately, at this point, it’s just not working yet, and they want to replace my unit to home back in Europe.  Realistically, by the time they do that and troubleshoot issues, it’ll probably be late April.  And y’all will be wondering what was up.  So I’m writing what is effectively a placeholder review.

It basically says ‘this unit doesn’t work well right now, but let’s see what it’s like by the time we get to summer (June/July/August)’.  It also gives JetBlack a reason to try and improve some of the areas that don’t work or are missing.  Which I think is good for the industry.  Even though the trainer market is thriving with competition, more of it is better, especially in the $1,000+ game.

So with that, let’s dive into what we’re talking about.

The Basics:


It’s important to note that the WhisperDrive Smart is distinctly different from the WhisperDrive (sans-Smart).  The ‘Smart’ part means that it’s controllable by an app – such as Zwift or TrainerRoad.  That means the resistance changes dynamically to match terrain, or that of an ERG (structured) workout.  If you tell the trainer to hold 275 watts, it’ll do so.  Or if you tell it to simulate 8% grade, it’ll do so.

When it comes to what’s in the box – things are nice and simple! It merely has the trainer and two thru-axle adapters. No power cord is included (because it doesn’t even have a hole for it, it’s totally self-powered).


This is the trainer once everything is left sitting there sans-foam:


The WhisperDrive trainer is a wheel-off direct drive trainer, which means that you’ll remove your rear wheel to put it on the trainer, just like a KICKR or Tacx NEO or Elite Direto or CycleOps Hammer.  Same-same.  It also means you need to buy a cassette for the hub, since it doesn’t come with one (only Wahoo ships their direct drive trainers with cassettes).  Roughly speaking, a cassette is about $60, plus $10-$15 in tools if you don’t already have them.

DSC_1940 DSC_1938

The legs on the unit can fold in, to minimize the overall footprint.  The unit isn’t necessarily the prettiest one out there in terms of style, but that’s OK, neither were many of Elite’s trainers, nor the CompuTrainer.

DSC_1879 DSC_1880

Next, the unit supports thru-axle types of 9×130/125mm, 12x142mm, and a separate adapter you can buy for 148mm/BOOST compatibility.  As well as standard quick release skewers for non-thru-axle setups.  The spare parts were in one of the plastic bags seen in the unboxing setup.


Then you’ll have noted there was no power cord. That’s because the unit is totally self-powered.  Or rather, you-powered.  As you pedal, it powers itself, similar to the Tacx Bushido trainer.  The only downside here is that for pairing and such you’ll need to jump on the bike and pedal to make it show up in sensors menus. Also, that small LED light indicating status will illuminate once you start pedaling.


However, perhaps the coolest part of the trainer is the USB port in the back.  As you pedal the USB port will power/charge whatever you plug into it.  For example – a phone.


Of course, being where it is, the port isn’t exactly in the greatest spot on earth, but it’s handy nonetheless. If you had accessories like bike lights, you can leave a cable there and just charge them while they were still on the bike.  In my case, I didn’t have a USB-C cable quite long enough to charge my rear Cycliq Fly6 CE light, otherwise it would have been perfect.


But I did oddly enough charge a Di2 battery for another bike using it. I’m not exactly sure how much it charged it…but it’s the thought that counts.

Next, before we talk pairing too much – what about noise levels?  After all, the unit is named the WhisperDrive Smart.  Thus, one might imply it’s quiet.  But that’s definitely not the case.  The noise coming off the unit is louder than a Wahoo KICKR 3 (2017), not massively so, but certainly not quieter. Here’s a really crude noise test I put together on the two of them. Note all the usual caveats in the video itself.

Now a minute back I mentioned pairing, and that’s an important area to dive into.  The unit transmits itself as two core items:

1) Bluetooth Smart Trainer (kinda FTMS, but not working yet)
2) ANT+ FE-C trainer

And that’s it.  It does NOT transmit as a normal Bluetooth or ANT+ power meter at this point.  That matters if you typically record your rides on secondary devices, or with secondary apps.  For example, I always record my Zwift rides on a Garmin bike computer.  But I can’t do that now.  That’s because while the Edge could connect via ANT+ FE-C, that would conflict with Zwift controlling it.  Whereas typically I just pair the Edge to the power meter portion and it passively records.

Similarly, if you’re one that uses second training apps in addition to Zwift, many will let Zwift connect to their trainer passively via just the standard power meter transmission.  This allows them to use TrainerRoad or what-not for their actual workout, while gathering XP (Experience Points) on Zwift in the background.  You can’t do that here.


But that’s actually not the biggest issue.  That instead comes from Bluetooth Smart, where it simply doesn’t work well.  For example, when I went to pair it via Bluetooth Smart to TrainerRoad, it sees it as a cadence sensor (which means it won’t control the trainer):

2018-03-15 17.28.43

Inversely, I could pair it via Bluetooth Smart in Zwift, but then it stopped working after 2 minutes (every time).  The company says they haven’t seen this though, and it may be something wrong with my unit.

2018-03-15 17.32.09

You can see below that my cadence (broadcast from my power meter, but only connect as cadence), shows me pedaling, yet wattage from the trainer is zero:

2018-03-15 18.11.51

So I switched over to ANT+ on my laptop, first with TrainerRoad, and that paired nicely:

Screenshot 2018-03-18 20.53.29

But then I tried to do a calibration of the unit (spindown/rolldown/etc…), and that failed.  It actually disconnected the trainer.

Screenshot 2018-03-19 11.11.14 Screenshot 2018-03-19 11.13.09

There was no calibration option for this trainer via Bluetooth Smart, and none via their app either.  And as you’ll see – that’s kinda a problem.

Circling back to the protocols bit, in my mind a trainer in today’s world must do four things, and two things perfectly well:

A) Support Bluetooth Smart FTMS
B) Support ANT+ FE-C
C) Broadcast ANT+ power (speed too, cadence optional)
D) Broadcast Bluetooth Smart power (speed too, cadence optional)

These are the two standardized trainer control protocols that everyone uses, plus the two standardized power protocols.  One should implement these properly, and seek out help from trainer app companies to validate their trainer is working properly.  As such, a baseline I test for is the following:

A) Zwift functions on both iOS (Bluetooth Smart) and PC (ANT+)
B) TrainerRoad functions on both iOS (Bluetooth Smart) and PC (ANT+)

Sure, you can swap out Android in place of iOS, and Mac in place of PC – but that’s sidestepping the point.  The point is validating that both Zwift and TrainerRoad work on both ANT+ & Bluetooth Smart. End of story.  Plus, TrainerRoad is well known for helping companies navigate some of the trainer standard waters (and Zwift to a degree as well).  After all, they want their platform to work on as many trainers as possible, assuming you color within the FTMS/FE-C lines.

Beyond that though, many companies do actually also transmit other things.  For example, Tacx transmits out each trainer as both ANT+ & Bluetooth Smart Speed and Cadence sensors, which is kinda nice for lesser capable bike computers.  And some trainers also determine and broadcast cadence within the power meter transmission.  Those are all nice to haves, but not required.

Finally, things like protocols may be boring to talk about – but ultimately it’s actually almost all you care about.  You just don’t know you care about it. Without these protocols your favorite apps won’t work with your trainer.  As was the case here, I couldn’t use TrainerRoad with my iPad, and on Zwift I couldn’t calibrate it either.

Power Accuracy and Responsiveness:


Typically I start this section by detailing quite a bit about how I do accuracy testing on trainers, varying the bikes and power meters involved, as well as the apps and control protocols.  But in this case we’re just going to start.  Not because those things don’t matter, but in the context of what I (and others) are seeing…well…they honestly don’t matter.

First up, my standard 30×30 test using TrainerRoad.  This is a simple but highly effective ERG mode workout I designed that briefly builds the intensity before alternating power hard and easy for 30-second durations, eight times repeated.  It’s an abbreviated version of a very standard 30×30 cycling workout.  In this case, the recovery wattage is set at 142, and the interval wattage at 428w (the blue blocks). Here’s the result:


As you can see, it’s pretty bad (the yellow line is the trainer setting the power).  There’s a few core things going on:

A) It is unable to provide the proper resistance below ~200w: This is largely due to gearing, but on most trainers this isn’t really an issue until you get down to the 70-90w range (then gearing is more of a problem).
B) The initial responsiveness is 3-7 seconds at start of an interval: This isn’t horrible, but it’s not awesome. It’s just ‘meh’.
C) It can’t hold the interval wattage (period): You’ll notice it oscillates three times for each interval – spikes upwards of 620w and then down to 270w during the interval itself. It should be flat-lined at ~428w.

Even at the end of the workout where it had a minute or so to stabilize, it’s still oscillating wildly. So basically, it’s not at all the structured workout I’ve laid out.  Now, less you think I or TrainerRoad are alone here, Shane Miller of GPLama found the exact same thing on ERG mode in Zwift too using the Whisper Drive Smart.

For just random comparison, here’s that same 30×30 test conducted on the less expensive Tacx Flux trainer:


You can actually find all my 30×30 tests over on my TrainerRoad here (the ones from ‘Ray’ are me), for those that are interested (all of them are labeled by trainer).

Next, we went over to Zwift.

[Actually, I did a bunch of rides on Zwift, but usually the trainer would stop responding after 2 minutes, so we’ll skip all those.  And I also did rides last month – but those too had accuracy issues on spikes, so we’ll skip those too for the moment, and just go with yesterday’s ride.]

On Zwift I added the trainer as FE-C and got cooking. This was immediately following the TrainerRoad test above (like, 5 minutes later immediately), so as such the trainer should be nice and warmed up, especially since I did a bunch of aimless testing before the TrainerRoad session.

2018-03-19 11.48.19

Some thirty minutes later of Watopia, here’s what my power graph looked like:


At first glance, it might appear kinda close, but let’s add 10-second smoothing to make it easier to see in the graph:


And thus, it’s immediately obvious. The JetBlack is drifting higher as the session goes on – upwards of about 50w. Whereas the Vector 3 pedals and Shimano crankset power meter are perfectly together the entire time.

But that doesn’t exactly tell the whole story.  Instead, there’s a few things you should know:

A) I almost took home a segment leaderboard: Except I didn’t, because I stopped pedaling at the top.  That’s because my wattage was over 50w higher than reality…while not pedaling hard.  So I slowed down to barely pedaling near the finish line, to not steal that away from someone that might have tried.

B) I tried sprinting: But even in my biggest (hardest) gear combination, I quickly spun-out, which means I ran out of resistance during a short 13-second sprint – you see that around the 24 minute marker.

C) I shouldn’t be able to do either A or B: I’m not a cycling powerhouse.  I can’t hit above 1,000w unless assisted by a malfunctioning power meter.

D) The trainer stopped responding to incline commands: After about 22-25 minutes, somewhere in there it stopped changing the grade of the trainer – so it just became flat. It was still transmitting power, even cadence (which is often wonky, btw), but was no longer matching the terrain I rode over.  That’s why it looks so ‘level’ in those areas.

And thus at 30 minutes I decided to end things.  With the app no longer controlling my trainer in any meaningful way, and the trainer not accurate, there wasn’t much point to continuing.  Plus, I was hungry for lunch. And again, remember this was with the latest firmware after the previous firmware I was testing had numerous power spike issues (allowing me to set personal records close to 2,000w).

Trainer Comparison:

While this review is considered interim until they can sort things out, I did at least load the trainer into the product comparison tool for trainers.  This allows you to see the full lineup of specs, and how it compares to other trainers on the market.  For context, I went ahead and put in ones that I thought were roughly competitors.  This meant the Wahoo KICKR, CycleOps Hammer, Tacx Flux, and the Elite Direto.  Note you can mix and match any trainers I’ve reviewed or ridden in the product comparison tool here.

Function/FeatureJetBlack WhisperDrive SmartCycleOps HammerElite Direto (2018)Tacx Flux 1Wahoo KICKR V3/2017
Copyright DC Rainmaker - Updated May 11th, 2021 @ 4:00 am New Window
Price for trainer$1,099$1,199USD$849 ($799 for 2017 models)$799USD/€799$1,199
Trainer TypeDIRECT DRIVE (NO WHEEL)Direct Drive (no wheel)Direct Drive (No Wheel)Direct Drive (no wheel)Direct Drive (No Wheel)
Available today (for sale)YesYesYesYEsYes
Availability regionsGlobalGlobalGlobalGlobalGlobal
Wired or Wireless data transmission/controlWirelessWirelessWirelessWirelessWireless
Power cord requiredNo (none at all)YesYes (no control w/o)YesYes
Flywheel weight6.5KG/17.5LBS20lb/9kg4.2KG/9.2LBS6.7kg (simulated 25kg)12.5lbs/5.7kgs
Includes cassetteNoNoNoYes (11 Speed SRAM/Shimano)
ResistanceJetBlack WhisperDrive SmartCycleOps HammerElite Direto (2018)Tacx Flux 1Wahoo KICKR V3/2017
Can electronically control resistance (i.e. 200w)YEsYesYesYesYes
Includes motor to drive speed (simulate downhill)NoNoNoNoNo
Maximum wattage capability2500w2,000w1,400w @ 40KPH / 2,200w @ 60KPH1,500w @ 40KPH2500w @ 30MPH
Maximum simulated hill incline16%20%14%10%20%
FeaturesJetBlack WhisperDrive SmartCycleOps HammerElite Direto (2018)Tacx Flux 1Wahoo KICKR V3/2017
Ability to update unit firmwareYesYesYesYesYes
Measures/Estimates Left/Right PowerNoNo9EUR one-time feeNoNo
Can directionally steer trainer (left/right)NoNoNoNoNo
Can simulate road patterns/shaking (i.e. cobblestones)NoNoNoNoNo
MotionJetBlack WhisperDrive SmartCycleOps HammerElite Direto (2018)Tacx Flux 1Wahoo KICKR V3/2017
Whole-bike physical gradient simulationNoNoWith KICKR CLIMB accessory
Can rock/tilt side to side (significantly)NoNoNo
AccuracyJetBlack WhisperDrive SmartCycleOps HammerElite Direto (2018)Tacx Flux 1Wahoo KICKR V3/2017
Includes temperature compensationN/AYesN/AYesYes
Support rolldown procedure (for wheel based)YesYesYesYesYes
Supported accuracy level+/- 5%+/- 3%+/- 2% (Sept 2018 models, +/- 2.5% for earlier models)+/-3%+/- 2%
Trainer ControlJetBlack WhisperDrive SmartCycleOps HammerElite Direto (2018)Tacx Flux 1Wahoo KICKR V3/2017
Allows 3rd party trainer controlYesYesYesYesYes
Supports ANT+ FE-C (Trainer Control Standard)YesYesYesYesYEs
Supports Bluetooth Smart FTMS (Trainer Control Standard)SortaYesYesYesYEs
Data BroadcastJetBlack WhisperDrive SmartCycleOps HammerElite Direto (2018)Tacx Flux 1Wahoo KICKR V3/2017
Transmits power via ANT+NoYesYesYesYes
Transmits power via Bluetooth SmartNoYesYesYesYes
Supports Multiple Concurrent Bluetooth connectionsNo, just oneNo, just oneNo, just oneNo, just one
Transmits cadence dataYesYesNo
PurchaseJetBlack WhisperDrive SmartCycleOps HammerElite Direto (2018)Tacx Flux 1Wahoo KICKR V3/2017
DCRainmakerJetBlack WhisperDrive SmartCycleOps HammerElite Direto (2018)Tacx Flux 1Wahoo KICKR V3/2017
Review LinkLinkLinkLinkLink

Again, remember you can mix and match any trainers I’ve ridden or reviewed in the product comparison tool.  There’s tons of them in there.



There’s no doubt the road for JetBlack has been long with the WhisperDrive. They showed it way back at Interbike 2016, and then it made appearances in 2017 at trade shows, and finally started shipping in early 2018.  But at this point that road isn’t yet done being paved, despite the product being out in the wild. I found units in numerous local bike shops during my stay in Australia.

I do think the company can likely address all of these issues with software updates, though I don’t think that’ll happen overnight (or next week). Realistically I suspect it’ll take until May or so to chug through these issues and protocol gaps.  The pricing will also likely be a bit of a challenge going into the 2018 trainer season, especially when competing against both the Tacx Flux and Elite Direto which have higher accuracy claims.  Though, both of those trainers require power and the JetBlack unit doesn’t need an outlet, which may be valuable for some folks.

As I noted at the beginning – I’ll happily circle back to this unit once they believe these issues are addressed.  They’ve offered to send out another one to try once that time occurs. I want to see as many competitors in the market as possible, especially ones from other continents that may make trainers more reasonable in certain geographies (read: Australia).

Finally – speaking of trainers, remember that Eurobike is about 45 days earlier this year – now in early July. As such the entire ‘new trainer continuum’ has been moved up, at least for announcements.  Virtually all announcements for trainers occur at Eurobike, or in the month or so leading up to it.  This year won’t likely be any different.

With that – thanks for reading!

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  1. Chris

    End of second paragraph under “the basics” says “And no”

  2. Björn

    I sure hope you got reimbursed for the troubleshooting by their prod.dev team. :)

    I would probably start the piece with something like “eventhough this is available on the market, it isn’t a finished product , and hence nothing that i would recommend to anyone.” Just my 5 cents!

    Love your work, keep it up!

  3. guscrown

    Seeing that oscillation brings me back to my college days. Whomever designed the control algorithm doesn’t know about PID controllers. They should hire someone that knows what they’re doing.

    • Paul S,

      guscrown, you are absolutely right that their controller settings are a problem, but it’s just as likely to be a sensing problem as a control problem. I’d actually wager that the PID coefficients are fine… If their sensor data were valid. The fact that the actual reported wattage is too high suggests that either their force transducer has problems (hardware fix) or their force-data clean-up processing is giving incorrect results (software).

  4. Nick

    Good and fair review. Looking at your link to TrainerRoad, is there an explanation for the two Tacx Neo workouts being so off target?

    • I wimped out. ;)

      Basically, when you see that it’s because I started the workout and then immediately realized I didn’t have the power to complete it at the wattages I initially set. Most times I do these 30×30 test runs after a regular workout, since I usually want the trainer nice and warmed up.

      The challenge is if I had a hard workout right before it, then I often forget to adjust the percentage values before starting the TR session. So I have to do it right at the begining. Except when you do that, TR on their site doesn’t show the correct blue targets (but they do in the app). Kinda wish they’d fix that.

  5. Julien

    Ray – why would you record your Zwift ride with your garmin device ? And not just let it synch at the end directly with Garmin connect?
    Would that actually keep your recovery time / activity load etc in synch on your 935 or on Garmin connect ?
    I still struggle with Garmin as to what synchs with what !

  6. Right off the bat the WhisperDrive is a let down compared to the likes of Wahoo, Tacx or Elite smart trainers.

    Since most smart trainers are used indoors, I am not sure I see the value of the USB port. There are better options that don’t require hookup to the trainer. I suppose you could use it outdoors on a track or something, but realistically the reason why you have a smart trainer is to use it indoors when the weather isn’t optimal or to supplement your training when the weather is good.

    I am pretty sure Wahoo is going to release an update to their 2017 KICKR for 2018, which if what I hear is true, will be the trainer to own and put companies like Jetblack in the rear view mirror for quite some time.

    • Dan

      If wahoo does release this trainer to end all trainers in 2018 i will be soooooooo angry having purchased a gen 3 2017 in December, I may quit cycling forever. I am tired of always being on the tail end of life cycles

    • Dan

      Unless of course it is just a software update, then I’m still ok?

    • Pedro H

      Unless you are warming up/cooling down for a race?

    • The 2017 KICKR will still be an awesome trainer even if something else comes out this year. Maybe we will hear something by July when Eurobike kicks off. Looking forward to it.

      At least you can use the Kicker Climb with your 2017 model. :-) Just imagine if you bought a 2016. :-)

    • Pruh

      “I am pretty sure Wahoo is going to release an update to their 2017 KICKR for 2018, which if what I hear is true, will be the trainer to own ”

      Unless they introduce a motor brake in order to allow accurate physics (esp. kinetic energy) modeling, rather than relying upon the compromised combination of eddy current brake + fixed mass flywheel, then your assertion is unlikely to be true.

      Given time, all the high-end trainers will end up using motor brakes.

      It’s been a real surprise to see so many manufacturers still pursuing the electromagnetic eddy current brake route, but I guess they’re all sticking to what they know for as long as they can before being forced to jump.

  7. DonQ

    great review and hopefully some actionable feedback for the company. I’m hoping that you put the same feedback into KuaiFit who’s using your name to sell their product. They too have a shipping product and also need a fire lit under them to get it to something that people can actually use. And again, they are using your name and reputation to sell it.

    • I think a lot of companies use random quotes that I’ve stated publicly in posts for various things. I generally don’t pay much attention to it unless it’s horribly misquotes. Obviously, I don’t get any money from those quotes.

  8. Armstrongcycles

    Personal experience of Jetblack is not positive. I had their previous non smart trainer, and the bar mount for the resistance adjustment lever snapped on first fit. Sent upwards of 10+ contacts both through their website and directly emailing over a 12 month period (whenever it started annoying me just dangling over the bar)

    I was wanting to PURCHASE a replacement.

    Had zero response from them.

    Be interesting to see if they respond to any of this feedback!

  9. Tom L

    Another great review. I have to say I’m surprised that most companies don’t respond in the comments section of Ray’s reviews, especially the negative ones. Given how many people in the market follow DCR, it seems like PR 101 to say something generic like “We appreciate the feedback and are working around the clock to fix XYZ”, or if they legitamately disagree to explain why they think Ray is wrong (good luck with that).

    Any ideas why they won’t? Stubborness? Admitting a bug can be used against them elsewhere?

    • JetBlack have done this on my video over on YouTube posted last week with similar tales as Ray has posted here. I suspect they’ll do the same here once they’ve read and digested the content.

    • Most companies these days actually do post publicly in the comments section here on most reviews. Even Garmin started doing it last fall for products announced/released since then. You’ll find a couple different Garmin folks ‘responsible’ for monitoring the comment threads here on posts like Vector 3 and the FR645, among others.

      I think the only major companies that don’t these days is Apple and GoPro. Suunto does sparingly, Polar with more focus on certain products. Wahoo quite proactively. All other power meter companies and trainer companies do as well. And almost every startup or smaller company does (I’d have to think hard to find examples of smaller companies that don’t).

      That said, even the companies that don’t post publicly do read. They often reach out if they see something odd in the comments and they want to get in touch with that reader. I’ll e-mail the reader first, asking permission to share contact info, and then connect the two once they agree. Garmin has long also read every comment on every one of their posts, especially after launch. They are definitely listening, as occasionally they’ll follow-up to ask how broad I might feel a given comment is (meaning, is it just a one-off, or a bigger item). Most brands do the same.

      And many companies (especially trainer and power meter) even have their customer service systems setup to actually issue tickets for every comment post made on their own product reviews. For example, if you post to a Tacx review, they’ve set it up to get e-mail notifications for new comments, which in turn create a helpdesk ticket ID that they track internally. Obviously, they don’t answer every one, but certainly they are watching.

    • Roady

      Ray, that’s an amazing post and explanation. Really think it needs a post of it’s own – like an FYI or such for people to refer to, maybe even for companies to submit their ‘helpdesk’ type support links and contacts for consumers requiring support. A ‘help’ page here for people to be directed to the correct place for support – obviously with reports back from those who’ve dealt with support.

    • I have been working on this project for over 2 years now with the JetBlack development team who are all passionate about indoor training. We have given high priority to fix the highlighted issues and appreciate the patience of those that have already invested in our product. We will have updates ready to download over the next few weeks, and already we have fixed the ERG stability which will be available in an update early next week. FTMS integration will be available very soon and our spin down calibration is currently been tested. For any questions or support issues please feel free to contact me personally at any time at murray@jetblackcycling.com

  10. Nick P.

    :-) That’s an acceptable reason, I know the feeling well. I have just switched from Wahoo 1st Gen to Neo based mainly on your comments and I am liking the quieter running.

  11. Bob

    The most important takeaway here is to get off the trainer when lunch is ready. All trainers should support this protocol.

  12. Julien

    Thanks Ray – and i know you wrote a post which I read (as all the others) last year on garmin connect synch across devices. If I record the ride on garmin 820 and I run with a 935 is training load / recovery / vo2 etc combined on each device? Thanks for all that you do

  13. Dan G

    I sometimes think you’re too kind Ray. I know you want companies to succeed, but as a consumer I want to be able to come here and read of the products I should avoid, as well as those which are good.

    If a company is selling a device which is bad — do not feel you have to give the company time to fix things. It was their choice to launch too soon. Instead tell us that a device is shoddy so we can avoid wasting money.

    • jcbenten

      Agree…way too much time spent trying to get this thing to work. But it could be a marketing ploy by Ray…”Send me your product. If it sucks, I will be nice during the writeup.”

    • Mike Richie

      I kind of agree. Except for the pre- and post-race use case (where not needing power is a plus), I don’t see how even if all their problems are fixed that this trainer is competitive based on noise, accuracy and price. Why would anyone buy it?

    • I suspect in some ways I’m damned if I do, and damned if I don’t. If I had simply posted a paragraph or two that basically said ‘this trainer doesn’t do what it says it does, and then some’, then people would say I was favoring Tacx/Wahoo/Elite/CycleOps and not giving newcomers a chance. They’d say it deserves a full review.

      So in this case, every section of this review is super clear about how it fails:

      A) The intro section notes that this is unique, because the product doesn’t meet expectation
      B) The Basics section notes how it fails to do the most basic protocol things correctly.
      C) The power accuracy section is pretty much 100% dedicated to showing how it fails
      D) The Trainer Comparison section shows where it lags compared to competitors
      E) The Summary says straight up don’t buy it.

      I’m unclear on how I’m favoring them?

    • Julien

      I think it was very clear from the article – a well balanced and informed review as always…

    • Geoffrey

      I am not sure what review some others read….for me the review screamed ‘don’t even think about buying this crap’ and based on your previous reviews of trainers I don’t see how you are favoring one brand over another. I just don’t get that from any of your posts I have been reading over the past 2-3 years.

  14. Chris Furner

    That is a mighty expensive trainer for the many defects.

    Hope no one buys that until they get stuff fixed up. It would be a shame if people had bad Zwift experiences and quit the app, because the trainer was making their experience bad.

  15. giorgitd

    Terrific reviiew, as always, Ray. But, with respect to the trainer…wow. Just…wow. Sure, maybe software/firmware updates can improve performance. But this is a device. In a box. On retailers floors. Being purchased. Today. And, although Ray is too kind to say it, I will. It sucks. There is nothing, not a single thing, that makes it a potential purchase. And the manufacturer *knew* all of this when them placed the price tag on the box for you to buy. Fail. Forever. But I’m just the kind of person that keep a grudge, i guess…

  16. Charlie Lao

    i tried connecting the trainer using BT only as a smart trainer to the Trainerroad app and it won’t connect. BUT, using Jetblack’s own mobile app on my android device, it was able to control the trainer

    • Correct, same issue I had as noted above. It’s because the JetBlack trainer isn’t properly broadcasting as FTMS, but rather…something else. They’ll need to work to properly implement FTMS (the equivalent of ANT+ FE-C, but on Bluetooth). TrainerRoad is really good about helping companies implement it though.

      FTMS once implemented properly has the benefit of making your trainer compatible with almost all other apps too.

  17. Tony Simmonds

    Tony from JetBlack here. We have taken the recent feedback and comments onboard and have had our development team working day and night.
    We are releasing a firmware update today that addresses the behavior observed in ERG mode as well as updating the Ant+ naming.
    We are well underway with Bluetooth FTMS coding and Spin Down Calibration implementation which will optimize user experience across apps and devices. We are expecting both these items to be complete within the next 4 weeks. Once complete they will be available via a firmware and app upgrade.
    Users can be confident that we are working overtime and upcoming updates will have these issues sorted.
    Thanks again for your feedback and I will keep you posted.

  18. Kendrick

    I actually purchased this trainer just over 2 weeks ago. My experience went something like this:

    – Excitedly rush home with new trainer and set it all up!
    – Start pedalling to turn it on, connect to phone with the Jetblack App and update the firmware.
    – Connect to computer via Ant+ in Trainerroad, where it works for a little bit but keeps dropping out.
    – Connect to Phone via bluetooth in Trainerroad. It sees the trainer but can’t connect.
    – Connect to Tablet via Ant+ but it keeps dropping out. Try bluetooth on same tablet, sees it but can’t connect.
    – Same problem with a different laptop and an iPad. Sees the device via bluetooth but can’t connect or drops out with Ant+.

    – Got hungry so went and had dinner.

    – After dinner nothing can see the trainer, not by bluetooth, not by Ant+. Not in Trainerroad or the Jetblack App. Nothing can find it.

    – Send email to Jetblack and the company I purchased it from. Company I purchased from helped with a few troubleshooting issues (pedal for 30 minutes to charge up, open it up to make sure battery is connected) but it didn’t work.

    – No response from Jetblack at all…

    – Returned the trainer and sorting out getting a different one instead

    Really disappointed with this trainer, on paper it had so much promise

  19. A quick update from JetBlack. Our development team is working hard to resolve Ray’s highlighted issues. We are happy to say, we have just release version 41, fixing and stabilising the trainer while using ERG MODE. The developers are now into the 6th day of a 10 day Bluetooth FTMS build. This will help connect our trainer seamlessly to popular 3rd party platforms that have had trouble implementing JetBlack’s Bluetooth code. Expect an update out shortly for this.

    Cheers Murray

    • Chaz

      I took a leap of faith and bought a unit a couple of weeks ago. The shop offered to take it back no questions asked if I had problems with it. I uploaded the firmware upgrade 4.1 and have had absolutely no troubles in ERG mode so far. The unit noise is ok, way louder than my Tacx Neo but at the price point very acceptable. Easy to connect to the PC and Mac via Ant+. Not tried Bluetooth yet. Thumbs up from me.

    • Chaz

      PS. can’t see any option to calibrate. I’m not sure if it’s like the Neo which does not need manual calibration but it would be reassuring if the manual said one way or the other.

    • Hi Chaz, firstly thank you for the “leap of faith.” You aren’t alone, many other users are having great experiences on our Trainer.

      Our development team have now finished updating the Bluetooth code to comply with the popular training platforms. We are now just waiting for them to test and confirm the build. This will give you a great experience on Bluetooth, similar to that on ANT+.

      With this build, our spin down calibration will be included, so expect to see that shortly. Until then, Happy and Smart Training. Murray

    • Charlie Lao

      where do we check for new firmware update releases?

    • Murray Healey

      Hi Charlie, Normally you would receive an email informing you of updates if you have registered within the App. Before connecting to the Trainer, Please go to SETTINGS > UPDATE FIRMWARE > FIND (this will connect your trainer) the app will then inform you of any updates or tell you your trainer is up to date.
      Please email me if you have any issues. murray@jetblackcycling.com

  20. Ross Malin

    Murray, maybe I am blind but can’t seem to find anywhere in the app that shows what firmware I have ??

    • Murray Healey

      Hi Ross, Please see the above comment, if you have any issues please do not hesitate to email me. murray@jetblackcycling.com

      We are only days away from updating with a new version ,you should get notification via email and via the app

      Happy training.

    • J Ward

      Is it still sitting on the 4/08 firmware? any update on the timing / content of the next update?

    • Murray Healey

      Hi, We are just preparing the new release now. Expect an update to come out at the end of this week. I will post what this update entails as we send it out. Happy training. Murray

  21. The article you have shared here is very awesome. I really like and appreciate your work. The points you have mentioned in this article are useful. I must try to follow these points and also share others.

  22. Herman

    Hi everyone I’m Taiwan user and bought it on January this year.

    At begin I really disappointment on this product

    But Mr. Murray very aggressive to fix all issues

    1.The firmware on 4/3, they fixed watt jumping and ERG delay problem
    the trainer can respond your resistance within second in ERG mode.
    (In zwift whisper smart can respond gradient resistance within second ,too)

    2.The newest firmware on 6/29,they did it!! Trainer can support ble FTMS right now
    I can use TrainerRoad in smartphone by this trainer,that’s great!!
    (watt present more stable,but higher than my Garmin Vector3 about 20w, need more test I think)

    For now

    this is completely right product in the market

    but only problem is noise

    I dont think mechanical problem could be solve by any means.

  23. Murray healey

    Hi Herman. Thank you for your patience and kind words. We work very hard to get this right. Our response time will always be slower due to the amount of power being used from the self generating system. I kind of like the delay going into the hills. Gives me time to adjust my gears.

    You will find after a few spindown calibration your 20 watt cap will close.
    Happy training.

  24. Murray Healey

    JetBlack are pleased to annoyance our development team have successfully implemented and updated the WHISPER DRIVE SMART’S firmware and features to meet the Industry standards. By doing this JetBlack is one of the few, leading the way in trainer software and hardware communications. With this update, it has given us the tools to improve other areas highlighted in initial reviews. Such as, Stabilizing ERG mode, Accuracy in readings and the ability to connect with everyone over the few chosen. 
    This new build is exciting for the future models we have in development and has given us a futuristic leeway in trainer technology.  
    We are confident with this build our customers and future customers will enjoy a problematic free experience with the Whisper Drive Smart. 
    • Implementation of Bluetooth FTMS
    • Stabilization of ERG Mode
    • Implementation of a Spin down Calibration
    • Refined our power model
    • Refined our resistance model
    • Refined our Cadence Model
    o NOTE, Cadence will no longer be advertised as a feature but will remain working as an estimated reading with limitations. Limitations to a user doing very fast changing intervals. i.e. 10 sec sprints with very short recovery. We have refined cadence and it is working perfectly within simulation on Zwift and other platforms.
    The only barrier we are left with is our reaction time. Moving the resistance unit from 0 to 7% for example, will take our trainer 5 to 7 secs. This is due to the power supply not being enough to quickly move the motor. One small sacrifice to pay for being self-generating!

    Also note, Zwift and Rouvy are still to implement the FTMS protocol so we recommend using ANT+ when connecting the WhisperDrive Smart with these two platforms. All other platforms including our App have updated to FTMS. We are working closely with these two platforms to finalise the build .

    In the coming days the development team will finalise the ability to board cast ANT+ and BLE power, Speed and Cadence.

    We thank you for your patients and comments (good and bad) as like in training, it’s all about preparation.
    Happy training

    • Chaz

      Thanks Murray and thank you for replying my email. I’ve upgraded to 1.3.8 (46). I’m posting for the benefit of the collective- where do we find the spindown calibration function? Is it in the app or built in? I suspect I’m getting rather flattering numbers. Thanks :)

    • Murray Healey

      Hi Chaz, Our App development team are running behind. All going well we will have the App update out within the next week. Until then you could use the Trainer road spin down if you have an account.
      You will receive an email informing you of the App release.

      Happy training

    • J. Ward

      The update is great. Erg mode and the spin down work well in TrainerRoad. BT works well with Zwift on Apple TV, but there doesn’t seem to be enough resistance. Almost like flat ground is -1% or something. I spin out below 300 watts. It works great up the virtual hills. Any ideas?

    • Murray Healey

      Hi J.Ward,
      Glad you are having a good experience with the recent updates. Our development team is still hard at work on further app and firmware improvements across the board. We will feed these through in our FW updates as they become available. The Zwift gradient issue has just come to our attention on a few units. We are working on this and will keep you updated on the solution shortly. Expect a solution within the next 7 days at the latest. Also please re use the trainer road Spin down calibration, this may help with the calibration. One question, are you experiencing the same on Trainer Road and Zwift.? Talk soon. Murray

    • J. Ward

      It’s really hard to tell on TrainerRoad since there isn’t slope mode. In erg mode, I do seem to be in a larger gear than I would be in other smart trainers. I really can’t do hard efforts in the small ring like I’ve done in the past (high load / low inertia). It works well, but I’m in a larger (and thus noisier) gear. On the spin-down I’m also in a larger gear than I’ve needed on the Magnus, or Flux, or Neo I’ve used in the past.

      Zwift is interesting. There doesn’t seem to be a resistance change between like -3% to 2%. The resistance is fine descending actually. But on a flat road I’m nearly spinning out if I go hard at all. I’d never be able to race in simulation mode but for riding around it’s fine. Up to about 5% it feels to easier than it should be, above that the resistance really kicks in and it feels really good and accurate. Again, it feels great – just not accurate to the virtual world. I like forward to the update.

    • Chaz

      Yep I can’t train on the Whisperdrive Smart at the moment.Since the last firmware upgrade, power readings are well off – +30 to +40W out and it’s not fair to race on Zwift at the moment. I’m starting to regret my aforementioned leap of faith :(

    • Murray Healey

      Hi Chaz,
      We have had some great response regarding the firmware update but have noted a couple of units not calibrating to expected values.

      Sounds like you have one there. Can you please email me at murray@jetblackcycling.com
      We want to make this right for you but i need some tech info for this to happen.
      Sorry this has happened to you and anyone else but it is a easy fix with the correct info.
      Hopefully hear form you shortly.

    • Murray Healey

      Thanks for the feedback. This will help us refine the areas you noted.
      We are also looking forward to this update and will come back to you very shortly with the update.
      Thanks again

    • Murray Healey

      Hi J Ward,

      We have found the issue around the resistance on the easier slopes and 0% gradients you were experiencing. It is a Zwift issue not our trainer. We have contacted Zwift and they are adjusting thier settings. If you use ANT+ on Zwift you will notice the difference over bluetooth FTMS. Expect an update from Zwift shortly. Happy riding Murray

  25. Murray Healey

    Thanks for the feedback. This will help us refine the areas you noted.
    We are also looking forward to this update and will come back to you very shortly with the update.
    Thanks again

  26. J. Warf

    Erg mode in Zwift doesn’t work acceptably either. Hardware is nice, software wise it’s worse than the vortex I had 2 years ago. TrainerRoad works in erg mode as long as you don’t try to do a workout with big changes, then you have to shift. I’m close to going back to my Magnus and tossing this in the closet. It’s a shame, hardware feels great.

    • Murray Healey

      Hi J Warf,
      Thanks for your email and feedback. Can you let me know what version firmware you are running please.
      I’ll chat to our development team to see if we can smooth the readings more. What happens is when there is a change in speed, target power the trainer will search to set the target power at the current speed. If your speed is a bit uneven then the trainer will continue to search. We have set a smoothing effect to compensate for all cyclist but with what you are saying is we may need to smooth more. It’s a fine line with the smoothing process, too much and you get a sack of potatoes, too little and we are searching for the perfect cyclist. It would also be interesting if you tried using ANT+ over BLE, to see if there is a difference. Leave it with me and don’t give up, we are close to getting this working really well and with comments like yours it will help us get there faster. Thank you. Murray

    • Murray Healey

      Update on our latest firmware released last week. Did a quick test on the new WhisperDrive Smarts coming of the production line. Updated with our latest firmware available to all 0.44. Using Quarq Cranks and Assioma Pedals to check Power and Cadence while riding the new course on Zwift. Loaded onto the DC Analyser to compare. Sweet calibration, sweet cadence. We are still waiting on Zwift to update their IOS Bluetooth FTMS service. This will give users using Bluetooth FTMS, more realistic resistance. Zwift tell us they will push it out this week.

  27. Emma Marston

    Hi, have you done a more up to date review of this since the firmware updates have been introduced?

    Thank you
    Emma x

  28. Murray Healey

    Hi Emma. DC has our trainer now. Last message from him, he was doing an update for his famous buyers guide due out very shortly. You should see this in the next couple of weeks.
    Saying that we have had great feedback from customers about our firmware updates. Everything is working sweetly. Happy training. Murray.

    • Lom

      I can confirm with the latest firmware I’ve had good sessions on TrainerRoad with the power tracking very closely to the target (almost always within 2% unless I get slack with cadence control). Just have to spin amd warm up for 10-15mins before connecting to charge the battery to make sure stable wireless connection.

    • Murray Healey

      Cheers Lom, for your Feed back. Maintaining a strong battery helps with the quality of connection. The reason for this, while using ERG or Simulation (Zwift) uses massive amounts of energy. The motor is constantly searching and moving, in some cases drawing energy from our connection battery. We suggest placing the trainer into a constant resistance mode once per week and riding for 15 to 20 mins. This will help regenerate the battery. Use this time to warm up or down.

      Happy training

  29. Jonathan Deutsch

    Has a new review been done on this trainer? – I think it was mentioned at the back end of last year…. I’m about to push the button on one but not sure if it still has issues….

  30. David

    An update to the review… bought the trainer for zwifting and now can’t get through a 60min ride without the battery completely draining and leaving me with a 120 cadence for 80 watts. I’ve done all the recharging methods and yesterday left my trainer with 21% battery lift only to get on for a Zwift ride now and have NO battery power! I’ve had to connect my vector pedals to at least get some riding done. Disappointed. Angry. Frustrated. No money to buy something else.

    • Jonathan Deutsch

      How do you know what battery level the trainer has?

    • Jonathan Deutsch

      Just to say I’ve had mine two weeks- used three times – no issues, Wakes up after two to three pedal strokes…. however I’ve not done longer than about 90mins… It shouldn’t be using battery whilst you are riding anyway?

    • David

      On the jetblack app, sensors shows the battery level.

      I connect with ANT+ from trainer to Macbook and if I run ERG mode or ride a hilly course on Zwift, I can’t get to 60mins with all resistance disappearing and then next to go is the actual watt reading. It even gave up on me within sight of the arch on Alpe D Zwift. I had to cancel ride not finishing the climb.

    • Murray Healey

      Hi David,
      I feel your frustration and anger. Sorry about this happening too you. If your battery is running low your trainer is faulty. This issue has been resolved and we will need to get you a new unit out asap.
      Please email me at murray@jetblackcycling.com so i can action this for you. The new units in the market are equipped to handle regeneration of battery power under all training types.Talk soon. Murray

    • Murray Healey

      Hi Jonathan,
      You can keep an eye on your battery status when you first connect to our App it will show the %. If by chance your battery is dropping, simply place the trainer into a set resistance mode on the app and ride for 30 to 60 mins. This will boost the life. As I said to David, the battery issue has been resolved but some older models form early productions will be affected.

      Happy training

  31. Matt

    Hi I’m in Australia and the MK2 is priced a couple of hundred lower than other trainers
    It’s been a few months but have you done another test on the MK2?

    • Hi Matt, the MRK2 WhisperDrive Smart is going very well for us and gaining traction around the globe. We have had great response from the users on the updates and customer service. It is good we can hit a price point in Aussie and with the numbers we are selling happy to continue this. Please pop into a 99Bikes store near you and test the trainer yourself. Take look attached article. Happy training. Murray

  32. Iris

    I bought the JetBlack WhisperDrive Smart Trainer a week ago. Today I find the defects of the trainer. Even I ride on the flat road with the lightest gear in zwift, the resistance is much heavy that is like climbing hill.
    Even the trainer is connected to the JetBlack apps, The JetBlack apps can’t control the trainer resistance.
    I don’t know how I can reset the trainer
    This trainer is awful

    • Hi Iris, thanks for the message and sorry you are having this issue. If you recently purchased, you would have purchased a version 2 trainer. These have be successful for us. Can you please reply with answers to the following questions. I then can help resolve your issue.
      Is the red light Flashing when you activate the trainer?
      When you connect to our App, please inform us on your battery %
      Did you perform a spin down? On which platform?

      Please email me at murray@jetblackcycling.com.
      Chat soon

    • Henrik

      Hi there, I also purchased this trainer in Sept 2020 via Wiggle, main selling point for me was the fact that you don’t have to plug it in and there is some flexibility and you can use it outside.

      This is the version 2 of the trainer indeed so you would expect things work, at least the basics.

      I have no problem connecting the trainer to the Android app and did initial session without connecting to spin the battery up to 60-70% (my battery does not go higher than this).

      However the Android app is not able to update the firmware of the trainer, so I have given up using it for 3rd party applications.

      Its still useful as a flexible trainer you can use where you do not have a power outlet, with better road feel than a wheel-on trainer, but the “smart” functionalities I have to say are below par in 2020 when the basics are not sorted.

    • Hi Henrik, Since our last communication via email, our developers believe with the new IOS and Android Updates, this cause’s very small frequent BLE dropouts. This causing the issue of not being able to successfully do the update.
      Today we will be releasing 0.46 which testing proves has refined the BLE connection across platforms.

      Please note, this will not resolve incompatibility issues between our App and some Android models.

      Happy training.

  33. Hi Henrik, Since our last communication via email, our developers believe with the new IOS and Android Updates, this cause’s very small frequent BLE dropouts. This causing the issue of not being able to successfully do the update.
    Today we will be releasing 0.46 which testing proves has refined the BLE connection across platforms.

    Please note, this will not resolve incompatibility issues between our App and some Android models.

    Happy training.

  34. chris

    Just wanted to commend to say that I purchased this trainer in August in the UK.I had a few issues with the app updating firmware but with support from Murray I got it up and running and since then the trainer has been really good for me. I use it with Zwift can train without the need to plug in to a power source, responsiveness in ERG mode is around 3-6 seconds which I find to be fine for interval sessions. It isn’t whisper quiet but it is a lot quieter than the wheel on turbo it replaced and is by no means noisy. I’m really happy with this machine.

  35. Steve

    After loads of problems last update has finally fixed the 1 min drop outs on the trainer. Going to do a power comparison with some pedals to see the accuracy levels. This review caused me to receive alot of stick, everyone believes I have 50w more then everyone else…..

    • Jonathan Deutsch

      I’ve still got mine after about 2 years – I now have no dropouts (bluetooth to ipad) BUT I’m fairly certain the trainer over reads by about 10%. I’ve tested it with two different sets of crank based PMs (stages and 4iii) and the error is fairly consistent. I’m now using the 4iii for power, and the trainer as smart bit only.

      This is fine – although the error has really “got into my head”. I constantly question the numbers; and its sort of ruined zwift racing as I can see how full of errors and inaccuracies these trainers can be! However, for solo training on zwift – its fine – BUT if I had a mains power in my garage I would change it….

  36. Remy

    Hi … any plans to review the Volt model?