Week in Review–August 5th, 2017


The Week in Review is a collection of both all the goodness I’ve written during the past week around the internet, as well as a small pile of links I found interesting – generally endurance sports related. I’ve often wondered what to do with all of the coolness that people write, and while I share a lot of it on Twitter and Facebook, this is a better forum for sending it on to y’all. Most times these different streams don’t overlap, so be on the lookout at all these places for good stuff!

So with that, let’s get into the action!

DCRainmaker.com posts in the past week:

Here’s all the goodness that ended up on the main page of DCRainmaker.com this past week:

Sunday: Week in Review–July 30th, 2017
Monday: 5 Random Things I Did This Weekend
Tuesday: Wahoo ELEMNT MINI In-Depth Review
Wednesday: In Just 7 Days….
Wednesday: Investor Call Tech Tidbits: Garmin Q2 2017 [Fenix, future products, and activity tracker tidbits]
Wednesday: Investor Call Tech Tidbits: Fitbit Q2 2017 [Upcoming smartwatch, other products insight]
Thursday: Interbike moves to Reno (and Tahoe) in 2018, opens to consumers
Thursday: Investor Call Tech Tidbits: GoPro Q2 2017 [Hero 6, Fusion, and Karma insight]

Well that week turned out busier than I expected.  Ironically, most of my time was actually spent on prep of other things as I noted last week.  With Eurobike looming, there’s a lot to get tested, photographed, videoed, and written about!

Sports Tech Deals This Week:

Below is the current list of deals in the sports tech realm.

ProductSale PriceAmazonSale Notes
Nespresso Vertuo Pop+ Deluxe Kit - 35% off!$129⚡ Let's be honest: This place runs on Nespresso (or, well, the knock-off pods we buy). But, the machine is Nespresso. Without it, reviews most definitely would not get done (and certainly not on time). This is a pretty sweet deal if you ask me!
9th Gen Apple 10.2-inch iPad (Wi-Fi, 64GB) - $75 off!$249⚡ This is an awesome deal. I use my iPad primarily for TrainerRoad as well as Zwift when not with a larger display. I also occasionally use it for other apps, namely Indievelo, Kinomap, Rouvy, and Peloton. But I pretty much test every smart trainer app on it. For all these cycling apps, the graphics capabilities is really pretty irrelevant, so having the absolute top-end/latest model won't make any difference. I prefer the budget options.
Amazon Echo Dot Kids - 50% off$27Despite being a tech-focused dude, our kids don't actually get much tech in their lives. However, we got these last Christmas for them in their rooms, to play music. They do lots of other things, but our kids mostly just use it to play music (from Spotify and Apple Music too), and occasionally they ask it questions. It has all the parental controls I want, so it locks it down from bedtime/etc...For $27? Solid deal (The coolest 'nice touch' feature is that if you whisper to it, it'll whisper back...in the owl kids voice it has.)
Anker Prime Battery Bank (27,650mAh) - $60 off$119I've been using this on my hikes/treks/daily life since this winter, and have been super happy with it. I can charge drones from it on treks, as well as just a crapton of other devices (wathces/action cams/etc), but it's not too terrible on weight. For day to day life, I use it on planes and such as a laptop battery bank (supports 100w charging). Super happy with it.
Apple AirPods Pro (2nd Gen with USB-C) - $90 off$168⚡ I've been using these since last fall, after years of using the Beats Studio Buds...man, these things rock. Sure, they're good for sports, but frankly, I use them on planes, editing, and such more than anything else.
Apple AirTags (4-Pack) - 11% off!$88⚡I make no secret how much I utilize AirTags, mainly, cause they've saved my butt numerous times already. We have them in every suitcase, and every backpack, and every bike bag. They're also hidden in most of our bikes (sometimes two of them). We were able to get our cargo bike back when it disappeared, as well as figure out when all our suitcases went missing during an annual family vacation where they were (for 5 days), and plan appropriately. Seriously, just get them...for everything.
Apple Airpods (3rd Gen) - $40 off!$119
Apple Watch SE (2022/2nd gen) - $70 off
$249/$299 (cellular)
$169⚡⚡This is now the lowest price we've ever seen the Apple Watch SE (2nd Gen) - a very solid deal, especially with the new WatchOS 11 features around Training Load, Vitals, offline mapping, and more.
Apple Watch Series 9 - $120 off
$399/$499 (cellular)
$279⚡This is the lowest price to date we've seen on the Apple Watch Series 9, and notable, given the huge slate of software updates just annoucned at WWDC last month, coming to the Series 9
Apple Watch Ultra 2 - $100 off$699⚡ This is by far the lowest price we've seen an Apple Watch Ultra 2, to date. Very solid deal, and like the Apple Watch Series 9, it too is getting a huge slate of new features just announced last month for WatchOS 11.
Balega Comfort Running Socks - 34% off
$10This is the singular piece of apparel that's lasted the longest in my collection - some 15-16 years of buying the same socks. Heck, some of them are probably half that old. EIther way, this be the ones I use. Love them (well, except for hiking and trail running, then I use other stuff that goes higher).
Beats Fit Pro - 25% off$149
Beats Studio Buds - 47% off
DJI Action 4 - $100 off$299
DJI Air 3 Combo Package - $300 off$1,239If you're looking for an extra zoom lens on the drone (beyond a Mini series drone), and full obstacle avoidance, then the Air 3 is your best bet.
DJI Mini 3 with RC-N1 Remote -$70 off!$349
DJI Mini 4K Drone - $60 off$229This is an incredible deal. I actually picked up one of these back a few months ago to test (haven't quite finished that review), but I've used it in a boatload of review shots since then. Despite me owning all the DJI drones (seriously), this is by far the best value there is.
FORM Smart Swim 2 Goggles - $20 off$229
FORM Swim 1 Goggles (with heads-up display) - $30 off$140
Fitbit Ace LTE Kids Activity Smartwatch - 22% off$179⚡This was just announced last month, and this is the first sale we've seen on it. I've (via my kids) been testing it, and am kinda mixed on it. But if you're looking for a deal - it's here!
Fitbit Charge 6 - 38% off!
$99This is the go-to sale price for the Fitbit Charge 6. It happens often, but it still doesn't take away from the fast that it's argueably the best bang for your buck fitness tracker out there.
Fitbit Sense 2 - $70 off$179This is the lowest price we've seen to date for the Fitbit Sense 2, surpassing the previous low record of $199
Fitbit Versa 4 - $40 of$159This is an OK deal. I'd probably just spend the extra $20 to get the Fitbit Sense 2 currently on sale.
Garmin Edge 1030 Plus Bundle with all Sensors - 44% off$389I'm a bit conflicted on this one. First up, it's a sensor bundle with HR strap, speed sensor, and cadence sensor. But at the same time, it's the Edge 1030 Plus, which isn't receiving updates anymore. Whereas the deal for the Edge 1040 (no sensors) is incredible at $449, and that's still getting *new features updates* and likely will for the next year or so. Your choice, but I'd personally skip the sensors (since your watch likely already can broadcast HR).
Garmin Edge 1040 Cycling GPS - $150 off!$449The deal is back! After we saw this deal in May, it's returned for Amazon Prime Day. This is notable because the Edge 1050 has launched and with it, the Edge 1040 got plenty of new features as well, kept largely in sync between the two. Definitely a steal.
Garmin Enduro 2 - $300 off
$599I'm not really sure if I'd call this $500 off like Amazon, as this is on sale a fair bit. That said, if battery life is your key concern - this solves that concern. I did a 8-day 180km trek (with navigation and all features enabled) on this watch on a single charge. Note: This is still available, simply select the 'Other Sellers on Amazon' on right side of product page, and you'll see it there, new from Amazon, for delivery next week. Amazon will automatically prioritize faster shipment over lower price. Enjoy!
Garmin Epix (Gen 2) - $400 off!$499⚡⚡⚡ This is a crazy super strong deal. Note that the Epix Gen 2 has continued to receive virtually all of the Epix Pro new features firmware updates, including new bits just this weekend. ***Note: This is still available, simply select the 'Other Sellers on Amazon' on right side of product page, and you'll see it there, new from Amazon, for delivery next week. Amazon will automatically prioritize faster shipment over lower price. Enjoy!***
Garmin Epix Sapphire Titanium (Gen 2) - $400 off!$544⚡⚡⚡ This is a crazy super strong deal (insane), and this unit is the Sapphire edition, which has multi-band GNSS on it. Note that the Epix Gen 2 has continued to receive virtually all of the Epix Pro new features firmware updates, including new bits just this weekend. ***Note: This is still available, simply select the 'Other Sellers on Amazon' on right side of product page, and you'll see it there, new from Amazon, for delivery next week. Amazon will automatically prioritize faster shipment over lower price. Enjoy!***
Garmin Fenix 7 Solar Sapphire - $250 off!$549⚡⚡ This continues to be a crazy deal, since this is the sapphire edition, which has multiband/dual-GNSS, and also still gets all the latest firmware/feature updates of the newer Garmin Fenix 7 Pro.
Garmin Forerunner 255 Music - 45% off$219⚡⚡This is argueably one of the best budget deals there is, this go around!
Garmin Forerunner 955 - $180 off!$319This is one of Garmin's most popular running watches, and it's down to an absoultely insane price. I often use this in my accuracy testing comparisons when validating other watches, due to it's very strong GPS performance. Note this is the base edition without solar. It'd be hard to find any better deal in sports watches today, from any company (given this has full mapping, tons of new features even this week, etc...). ***Note: This is still available, simply select the 'Other Sellers on Amazon' on right side of product page, and you'll see it there, new from Amazon, for delivery next week. Amazon will automatically prioritize faster shipment over lower price. Enjoy!*** Also, check both color options for non-solar.
Garmin HRM-DUAL (ANT+/Bluetooth Smart Strap) - 32% off!
$47This is Garmin's ideal strap if you just want an affordable dual ANT+/Bluetooth Smart option, especially when it's on sale like this - it really becomes one of the best deals out there right now for a multi-connection strap.
Garmin Instinct Crossover Solar - $200 off!$299This is by far the lowest price we've seen this.
Garmin Varia RCT715 Camera Radar - $50 off$349
Garmin Varia RVR315 Radar - $50 off$99⚡ This is Garmin's radar without the light, so it's a bit smaller as a result. Same radar tech though, and compatible with Garmin/Stages/Hammerhead/Wahoo bike computers.
Garmin Varia Radar (RTL515) - $50 off$149This is Garmin's standalone radar+taillight option, and $149 is pretty much the standard sale-price.
Garmin Vivoactive 5 - $35 off!
$265This is Garmin's newest unit in the Vivoactive 5 realm, and is essentially a mini Venu 3.
Garmin inReach Messenger - $70 off$229
GoPro Hero 12 Black - $100 off!$299This is the lowest price we've seen on the Hero 12 Black to date, easily surpassing Black Friday last year. It's what I use for all my action cam shots.
Google Pixel Watch 2 - $100 off!$299While Google has already announced an early August date for new Pixel devices, the company has also largely brought every feature of the Pixel Watch 2 to the Pixel Watch 1, so I'm not super worried about them cutting off support soon.
HoverAir X1 Drone - $160 off!$309⚡⚡ This has become one of my favorite drones, given it's tiny size (fits in my running shorts pockets) and ease of use. The further updated price of $309 (from $359 at start of sale) is incredible, and by far the lowest price to date.
Insta360 Ace Pro Action Cam - $100 off$349I've been using this a fair bit over the past winter, and it's a solid little contender. In particular, the Garmin/Apple integration to overlay data onto your videos is silly easy to use, and super quick as well.
Jackery Portable Power Station - $80 off!$198This is something I use frequently when shooting out and about and I need to re-charge a crapton of drone batteries, action cameras, or just cameras and such. I also use it on trips to Eurobike and elsewhere to keep equipment charged. I've even bought a solar panel to hook up to it (surprisingly effective). Heck, I've even powered a KICKR trainer ride from it!
Lasko High Velocity Pro-Performance Fan (U15617) - 27% off$47This is one of the most popular indoor trainer fan companies out there, which rivals the Wahoo Headwind fan but cost a fraction of the price. Of course, it lacks ANT+/Bluetooth integration, but realistically if you really want that you can add a smart outlet for $10 to toggle it on/off from your phone if need be. It's one of the ones in my rotation.
Nest Cam 2-Pack (Indoor/Outdoor using batteries)$249I use a fleet of Nest Cam's, both at the DCR Cave and at home. They obviously do the security thing, but I've also used them countless times when something incredibly stupid-hilarious happens at the DCR Cave, and this is the only proof of it!
Ooni Fyra 12 Wood Fired Outdoor Portable Pizza Oven - $60 off!$239⚡ I know, I know, I still owe everyone a review. Nonetheless, nearly 3 years later, I love this thing. We use it for more than pizza too, notably steaks (to get a really crispy sear). But a lot of pizza. It's completely portable, even easily fitting on our cargo bike. Note that I went with this model, the cheapest one they make, as I realized that buying the higher-end models that that support gas didn't make much sense for me. I have a gas grill already (and could easily just put a stone on it). Similarly, while a large 16" is appealing, realistically I've found this 12" more than enough for pretty substantial personal pizzas (and it makes it easier to handle). Full in-depth review pretty soon...probably. Also, $239 appears to be the lowest price ever.
Oura Ring Gen3 Horizon - $75 off$425
Peloton Bike+ is $400 off$1,995This is a solid deal for the Bike+, albeit largely the normal sale/deal price. Both my wife and I use both the Peloton Bike+ and the regular Bike (one at home, one at office) on a weekly basis. We like both. The Bike+ is more accurate than the regular bike, and also has a bigger screen and automatic resistance control. That said, the core Peloton experience isn't any different between the two - it's the same platform there.
Peloton Tread - $300 off!$2,695This is my main treadmill at home, and I really like it. I've got no complaints about it, and am happy I went with the smaller Peloton Tread versus the bigger unit.
Polar H10 Chest Strap (Dual ANT+/Bluetooth Smart) - 25% off
$75This is a great dual ANT+/Bluetooth Smart (with two Bluetooth Smart connections) chest strap that you'll often find me using as a reference strap in heart rate sensor testing. We only tend to see deals on it around Black Friday, always topping out around 20%.
Polar H9 Chest Strap - $10 off$50If you're looking for a good solid high-quality strap, that does both ANT+ & Bluetooth Smart, for a reasonable price...look no further than the Polar H9
Polar Verity Sense - 15% off
SHOKZ OpenFit - Open-Ear Headphones - 31% off$124
SHOKZ OpenRun Pro - Open-Ear Bluetooth Bone Conduction Headphones - 31% off$124
SONOS Roam 2 - 20% off$143We have a few SONOS speakers around the house and DCR Cave (the Ikea variants at DCR Cave), but by far our favorite is the Roam, which we take outdoors into the garden during the summer, beach vacations, AirBNB's, etc... It has a battery in it, and also connects to both WiFi and Bluetooth. Love, love, love. I think the main reason I love it, is that we heavily use it in summer, so...kinda reminds me of summer.
Samsung Galaxy Watch6 - 47% off$159
Samsung T7 Portable SSD 1-2TB - 50% off$79I use a small fleet of these T7 SSD's for various video projects, alongside the Sandisk SSD's. I literally have one of each color, just to keep things simple. They work great for quick storage. Note: Different colors have different sale prices - I don't understand why. Also, the 1TB are only $79, 50% off.
Samsung T9 SSD (1-4TB) - up to 43% off$126I use a literal flotilla of these small SSD's for all my photo/video projects until they get moved off to the NAS system (Synology) for longer term storage. I have T5/T7 units, and are picking up a few of the larger T9 ones given the sale prices. Love them, incredibly fast and reliable.
SanDisk 256GB Extreme PRO SD Cards - 49% off$31⚡I use the SanDisk Extreme Pro SD Cards exclusively for all my video/photo shooting on my Panasonic GH5 and Nikon cameras (video and stills), including up to 6K recording with the GH5. I've mostly used 128's, but more and more lately I'm filling up cards faster with higher bitrates, so this sale is gonna have me pickup a bunch of the 256GB ones instead. The 128GB/ 512GB/1TB ones are also on sale too viathe same link. Note that usually I wait till these are about $40-45, so this is a fantastic deal and I'll be filling up.
Scosche RHYTHM+ 2.0 ANT+ & Bluetooth HR Monitor
$23This isn't the newest chicken on the block, but for $23?!?! That's a crazy good price for something that's actually pretty darn accurate. Really accurate.
Therabody Theragun Mini - $50 off!$149My wife uses the Theragun Elite, which is a bit larger than this Mini model, and also includes more tips. But, as noted - people seem happy with all these models.
Therabody Theragun Prime - 20% off$239My wife uses the Theragun Elite, which is relatively similiar to this newer model.
Wahoo BOLT V2 - $45 off
Wahoo ELEMNT ROAM V2 - 15% off
Wahoo KICKR Core Smart Trainer - $75 off!
$425This is technically the lowest price we've ever seen for this traine as far as I know. It's still a very solid trainer, and the cornerstone to the new Zwift Ride bike as well (it uses the KICKR CORE as the base). It works with the Wahoo KICKR CLIMB too.
Wahoo KICKR ROLLR - $90 off
Whoop 4.0 with 1-year subscription - 17% off$199This brings down the 1-year price to $17/month, which is the lowest it's been (only way to get that is normally a 24-month membership).
Withings Body Comp WiFI Scale - 25% off$149
Withings Body Smart WiFI Scale - 20% off$79

Not a lot this week, and I don’t expect much more till we get to September.

YouTube Videos I Published:

Here’s some YouTube goodness that I published this past week, don’t forget to subscribe!

YouTube & Podcast Cameos:

With the Tour de France in town last week I had a small gaggle of visitors to the cave.  For example, Cycling Maven and Hannah came through and we had a chat at a café as well (the full interview will be published a bit later), but there’s a short tidbit in here in the meantime:

And then the folks from the Zwift Podcast also stopped by as well.  We chatted about trainers and what to expect at Eurobike.  A second and longer section is coming up soon as well:

Here’s the full Zwiftcast notes about the episode as well.

Stuff that I found interesting around the interwebs:

Here’s a not-so-small smattering of all the random things that I stumbled on while doing my civic duty to find the end of the Internet.

1) Another motor found in competitors bike: And just imagine how many bikes aren’t being tested out there… (via Slowtwitch)

2) Why UCI’s detection method isn’t all encompassing: This is a pretty cool video and highlights some of the challenges.  Note that I don’t believe however some that say using heat is the answer either. There’s just too much radiant heat on a hot summer day in many places that it likely won’t show up (all thermal images I’ve seen of bikes with motors are taken on cooler fall/spring days).  But, happy to be proven wrong there as I do have a thermal imaging camera but lack a motorized bike. Maybe at Eurobike I can find one to demo on a hot summer day.  In unrelated news, the YouTube channel this video is from is geek heaven.  Not totally sports-tech geek, but like 10GB Ethernet adapters geek.  Never seen it before, but definitely subscribed now!

3) SportTracks is now integrated with Polar: Well then, that took a long time (through no fault of SportTracks).  Really hoping this will enable Polar to move faster in adding in 3rd party sync partnerships…like the Nike+ Run Club integration they also announced.

4) Man swims to work each day: And the kicker? He’s not living in a warm place either! And he even takes his laptop along. (via Matt)

5) Las Vegas-Reno/Tahoe now wants the Olympics: Not content with just getting Interbike in 2018, they want the Winter Olympics in 2030.  Yes, I said Winter.  Btw – they’re almost 500 Miles/700 KM miles apart.  If there’s anything I hate more in any Olympic games bid is where venues are spread on the other side of the country.  It’s a *city bid*, and thus events should be roughly in that city.  Drove me nuts at London 2012 that you had to take a train more than 2 hours away out of the city to see a football match.  Or that in Beijing 2008, some events (equestrian) was held in Hong Kong – 2,000 KM away.  Grr…

6) Wanna be a Quarq product manager? There’s now an opening for you.  This position wears a lot of hats.  It’s the person that actually works with me to get me products, hear my feedback (which is really your feedback), as well as deal with other media too.  It’s a pretty cool job.  The previous person moved out of state, opening this position.  (Note: I often include interesting/unique sports tech job positions in the Week in Review, if you have one, send it along.)

7) Deliveroo using GoPro’s due to acid attacks: First of all, WTF!?!, who is acid attacking bicycle delivery people? Don’t f with my Phad Thai delivery girl please.  But second, GoPro cameras to catch the people (hopefully).  Interesting.

8) US Army issues order to immediately cease DJI drone usage: Due to concerns around how the location and photo/video data is being streamed back to DJI (live or delayed).  This is actually totally understandable, and perhaps this action will lead to DJI offering more options to consumers in the same vein.  I think DJI would be mistaken to take this action lightly, as this is something that could quickly spiral out of control for them from a PR standpoint.  A few national newscasts about it, then every local TV station is mentioning it (because they love to talk about fear of drones), and before you know it other governments are issuing the same thing. (via Sunny)

Sports Technology Software/Firmware Updates This Week:

Each week I quickly highlight some of the new firmware, app, software and website service updates that I see go out. If you’re a sports technology company and release an update – shoot me a quick note (just one-liners are perfect, or Tweet it at me is even better) and I’ll make mention of it here. If I don’t know about it, I won’t be able to post about it. Sound good?  Oh – and if you want to get a head start on things, this page is a great resource for watching Garmin firmware updates.

DJI Spark Firmware Update: Adds new gesture video recording modes, a few other new features.

Garmin FR230/235/630 Firmware Update: Handful of bug fixes.

Garmin Fenix 3/3HR BETA Firmware Update: Single bug fix for apps/widgets.

Garmin Fenix 5/5S/5X/Chronos BETA firmware Update: Whole pile of bug fixes, plus some new minor features, and support for latest version of Connect IQ.

Garmin FR935 BETA firmware update: Umm…balls that’s a massive firmware update. It more or less matches what the Fenix series has had over a while, just in one gigantic drop. Seriously, just go read the list.

Thanks for reading!

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  1. Dr. D

    Ray – there was also a Garmin Forerunner 935 BETA firmware update on August 4th – link to www8.garmin.com

    Many thanks.

    • Ahh, nice catch. I had written the post on Friday (and then realized it didn’t actually publish Saturday evening), so didn’t catch that one. Thanks!

    • Ben

      A long list of updates but nothing particularly exciting. I’m hoping they add the 24×7 stress tracking mentioned in Ray’s Vivosmart 3 review soon.

  2. Jim

    Great stuff again Hi Ray, lot’s of rumours around the upcoming Garmin Edge 1030 release. Any chance that we’ll get news/insights from you on this anytime soon?

  3. Robert

    Ray – Don’t get too cross but for the 1956 Melbourne Olympics, the equestrian events were held in Stockholm five months earlier…

  4. Dave Cochrane

    Test to pay my $20!

  5. Kyle Polansky

    Looks like you have 2 items labeled as #2 in the “Stuff that I found interesting around the interwebs” section.

  6. Charlie Anderson

    You’re going to ‘love’ the 2022 winter Olympics. In Beijing …

    • Indeed. Crazy reading about the average depth of snow (5cm) in that region the ski areas are going to be made. link to businessinsider.fr

      Still, I see this more of an IOC issue than a Beijing issue, as odd as that may sound. The fact that there were only two bidding cities is core to it – the entire ‘thing’ that is the Olympics has become too big, primarily due to commercialization – not necessarily athlete/spectator aspects (especially the winter games).

      And I think IOC sees that too. With them doing the dual-awarding of Paris 2024 and locking in LA for 2028 – that’s them saying ‘Please someone take 2028, else we’re hosed’.

      Having been to a number of Olympic games now (2002/2006/2010/2012) – you see just how much waste and overhead goes into the entire sponsor aspect. Both in terms of money, but also just space. All of these supposed sponsor events take up space, which in turn require more housing/hotels and more people to support it. It’s an endless cycle. All of which then requires bigger and bigger cities. The number of athletes in the summer games actually hasn’t much changed in 20+ years (roughly 10,000).

  7. Patrick

    It looks like Power2Max has sales in both Europe and North America right now.

  8. Phil A

    On the man swimming to work, the interesting point would be to find out if he got fined or anything after the news article, since there was a sign stating that swimming was not allowed.

  9. Aldo

    It’s a shame you couldn’t make it for last year Rio Games (for obvious reasons). All events were inside the city, even rowing and sailing which usually are held far away from Olympic city. Everything in my backyard was just perfect.

    On the other hand, if you stay in Paris until 2024 it will be in your backyard. :-D

  10. Keith

    At Beijing the equestrian events were in Hong Kong for quarantine reasons.

    All Olympics have events outside the city when you look at the football competition, although you would have thought with the number of stadia in London they could have managed to keep that event just in London. For London’s case, I think taking the football tournament around the country was a sweetener for the UK tax payer who had to foot the bill….

    Football in the Olympics though? That’s a whole other argument….

  11. Bogdan Vreuls

    I wonder wether there are any other sports which have mechanical doping issues.

    I’m watching the London 2017 Worldcup atletics especially the Javilin Trow (I’m dutch and we call it speer-trouwring thaught it was the same in english) . I noticed how the speer was not floating nicely. I’m not technical or so but can imagine a weight which can move and stabilize the whole thing…

    • Bob

      @Bogdan: In F1 racing Renault used a “mass damper” which was basicly a weight suspended by two springs. It was tuned so that it prevented the car moving/vibrating the car in vertical direction. With a little bit of ingenuity one could build a miniature version of that in a javelin, keeping the total weight the same of course. It was later banned.

      link to formula1-dictionary.net

  12. Mike Serago

    I hear good things about its features.