237 responses

  1. BQ
    July 1, 2013

    Thanks for the feedback. Any reason to pick one of those over the other? I like the idea of not using zip ties, so that might push me towards the motorola. Also, finally, does the use of a combo pod automatically override the GPS distance on my ambit?

    • Rainmaker
      July 1, 2013

      Go Motorola, it’s what I use, love it.

      I can’t remember offhand the exact override behavior there, sorry! On a Garmin (fwiw), the answer is yes for display, but not recording.

    • BQ
      July 1, 2013

      Many thanks!

  2. Michael
    July 19, 2013

    Been reading your blogs to see how you set up to use the Garmin 910XT and the Wahoo KICKR sensors but couldn’t find it. Sorry if this was already asked. Currently I have th Wahoo SC on my bike. If I install the Garmin GSC 10 can I use that to also use the Wahoo KICKR? What would you recommend?

    • Ray Maker
      July 19, 2013

      It’ll use the GSC-10 cadence in conjunction with the power meter data from the KICKR. The KICKR is simply seen as a power meter.

  3. Michael
    July 21, 2013

    Ray,

    Would you recommend using the Wahoo SC or the GSC 10 trying to incorporate Kinomap, Wahoo KICKR & the Garmin 910 XT? I appreciate your feedback. I’m new to all this technology and cycling.

    • Ray Maker
      July 21, 2013

      The GSC-10 would require that you also have the Wahoo ANT+ iPhone dongle if you’re going to use the Wahoo KICKR and/or Kinomap. That’s because those are all ANT+, versus Bluetooth Smart.

      Meanwhile, if you’re going with the Wahoo Blue SC, it’ll work with the KICKR app and Kinomap natively, but won’t work at all with the FR910XT.

      Right now you’re kinda stuck between two technologies. If it were me, I’d go with the GSC-10 and then pickup the Wahoo iPhone adapter.

  4. Dustin
    July 30, 2013

    Hi Ray! I have the 910XT and the Edge 800 on my TT bike. On my long distance races (iron and half-iron) the 800 will lose connection to the Garmin speed/cadence sensor, but will remain connected on the 910XT. I have to rescan on the 800 mid-race to get reconnected to the speed/cadence sensor. What do you think is happening here?

    • Rainmaker
      July 30, 2013

      This sounds like perhaps a connectivity issue with distance. I’ve seen that in rare cases. The first thing I’d try doing for fun is swapping the battery. You may be getting low, and while that typically doesn’t impact signal strength – it’s worth a try, and will only cost about $2.

      Beyond that, rescanning shouldn’t actually help, as it should just re-pick it back up as soon as it sees it again. Which almost makes me think you may be having some other issue on the 800. One thing to try would be a soft-reset, which sorta cleans up the Edge 800 but keeps your data files. Failing that, you could do a hard reset, which resets it back to factory state.

      I have a strong feeling one of those two will solve it if it’s not a signal issue.

  5. BENN SHEPHERD
    August 3, 2013

    Rainmaker,
    Your web site is fantastic and I use it more than the documentation that comes with the devices I am addicted to! I have just allowed myself a 910XT after a horrible Triathlon in Bretagne (36 degrees). My question is this:
    I want to use the Garmin Cadence Sensor with my EDGE 500 and the 910 XT and the HRM. It seems that when I pair the Cadence Sensor with the 910XT that I loose the pairing with the Edge 500. I want to use both the EDGE to watch my stats while racing and obviously wear the watch for the whole race and keep all data. Do I really need 2 cadence sensors? I have wondered on some races why some guys have 2 and maybe it is for this reason? Apologies in advance if the answer is obvious.
    Let me know if you are in Normandy and fancy a ride mate and thanks in advance for any reply.
    Benn

  6. David Cusick
    August 4, 2013

    Hi, ditto on the comments about what a great site, you address the questions that instruction booklets and user guides seem to gloss over at best, but most of the time don’t even mention. Anyway, enough said about the fantastic service you provide and onto the question …. I have just bought a Garmin Edge 510 for my wifes’ Scott and when fitting the GS10 to the Frame opposite the chainstay (as you mention, bit of a pain making sure it all lines up etc) I notice that the rubber pad at the base of the unit where it’s shaped to fit the contour of the frame, is nothing like it ! Granted, it probably fits most but that part of the frame on the Scott CR1 Contessa is quite broad and flat so the shaped/curved pad at the base of the unit doesn’t sit particularly well and as much as I have tightened the cable straps as much as I can, it feels like it’s going to be more prone to moving out of alignment when riding the lumps and bumps of our not so perfect roads here in the UK. Any suggestions ? ….. By the way, we don’t need the speed arm of the unit as we’ll be picking up speed from the GPS, we only need cadence so I may be looking for another Cadence only unit anyway !

  7. John
    August 15, 2013

    Great info, thanks. One question – is it possible to set 310xt to override “GPS” speed to be speed calculated from magnet, but still use GPS for tracking? I ride amongst tall buildings and speed bounces around a bit. Thanks

    John

  8. Windsor Cannon II
    September 18, 2013

    I have a cateye V3 biek computer with its speed/cadence and heart rate monitor. With a ANT+ attachment to my iphone, can it read my original sensors or do i need new ANT+ sensors?

    • Rainmaker
      September 21, 2013

      It doesn’t look like the v3 uses ANT+ unfortunately, so new sensors.

  9. Anthony Kingren
    September 28, 2013

    Hi Ray,

    I just purchased a Wahoo KICKR and I am trying to get cadence from a GSC10 and heart rate from the heart rate strap from my Edge 500 to appear in the Wahoo Fitness app on my iphone 5. I have a Garmin ANT+ stick from my Forerunner 410 watch, but the stick does not look like any one that I have seen on your site (I am sure it is there somewhere and I just haven’t found it). It is more pill shaped and is says Garmin lengthwise on the top. Do you think if i get an adapter to connect this ANT+ stick to my iphone 5 my heart rate and cadence will appear in the Wahoo Fitness app? If not will the wahoo fitness key upload from those two sensors? Any advice would be greatly appreciated. Thanks.

    Anthony

    • Rainmaker
      September 29, 2013

      HI Anthony-

      With your FR410, it came with the new sticks that were released this past spring. Work the same though, just tiny.

      As for the iPhone, yup, you’ll need the Wahoo ANT+ adapter as well as a Lightning adapter (they work together). At which point you’ll be good to go and the data will show. One minor note on the Lightning adapter, Be a bit careful with the cheaper knockoffs, Wahoo has found that some of the non-Apple official ones don’t work well (if at all). 🙁

  10. Anthony Kingren
    September 29, 2013

    Ray,

    Thanks for the quick response. I was hoping to get around buying a wahoo fitness key, but what are you going to do. Thanks again.

    Anthony

  11. Lauren
    November 6, 2013

    will the Garmin speed/cadence sensor work with the Timex Cycle trainer 2.0?
    thank you

    • Rainmaker
      November 6, 2013

      Yup, no problems at all.

  12. Mário
    November 22, 2013

    The Wahoo Speed/Cadence sensor is compatible with Garmin 910xt or suunto ambit 2?

    • Rainmaker
      November 22, 2013

      The ANT+ variant, yes. But the BlueSC (Bluetooth Smart), no.

  13. Jeff
    November 25, 2013

    Do you know if the Forerunner 310XT or the 910XT support the single-function cadence and speed sensors?

    I recently got a good deal on a used Lemond Revolution and I’m hoping to track both. My old 305 is one good rain away from certain death, so I’m due for an upgrade soon.

    • Rainmaker
      November 25, 2013

      Offhand I know the 910XT does, but I can’t remember if the 310XT does. Have to go dig it out and charge it up.

    • Jeff
      November 30, 2013

      Cool, thanks. Googling around I saw some references to someone misconfiguring a 310 and it was only showing speed, so it sounds like it does. Now, I’m just waiting for a 310XT Cyber Monday deal ..

      FYI, I tried subscribing to followups to this page and confirmed the link when I got it, but never got the email that there had been more replies. Cheers!

    • Rainmaker
      December 1, 2013

      Hmm, strange.

      Btw, there’s a very sweet FR310XT deal today for $159 with the HR strap.

    • Jeff
      December 1, 2013

      Nice! Wasn’t planning to get the model with hr, but that works.

  14. ELI
    December 21, 2013

    WHEN CHANGING THE BATTERY ON THE SPEED/CADENCE SENSOR THE THIN GASKET AROUND IT BROKE
    WHERE CAN I GET A REPLACEMENT?

    • Rainmaker
      December 21, 2013

      YOU CAN CALL GARMIN SUPPORT, THEY MAY BE ABLE TO SEND YOU ONE FOR FREE.

  15. hagai
    January 9, 2014

    Hi there; you seem to know a lot about the topics so here is one for you: I have a suunto 2s, the company and other distributer have run our of suunto cadence pods; which other cadence pods can work with suunto ambit 2s? Many thanks for your help.

    • Rainmaker
      January 9, 2014

      Any ANT+ cycling sensor will work with the Suunto Ambit 2/2s. For example, the Garmin GSC-10 will work just fine.

  16. Bivey
    January 18, 2014

    Ray,

    Love the site. Thanks so much for all of, well, all of this. Having trouble coming up with an answer to my GSC10 not picking up on my trainer. I have a KICKR, which as you know, has no real wheel assembly. Does that mean the GSC doesn’t turn itself on because the “speed” magnet is absent? Is there a way to get the cadence to pick up while the real wheel is off of the bike?

    Thanks!

  17. Andy W
    January 23, 2014

    Very useful article – answers the point I was puzzled by, as I didn’t understand why when you have speed&cadence sensing, you’d want only speed, or only cadence.

    One comment – I recognise that this is an older article, but you state that Trek Duotrap is the only frame-integrated system : now there’s also Giant RideSense at the least, maybe other brands too.

    • Rainmaker
      January 23, 2014

      Yeah, since then there’s a Giant and a couple of others that have it. Some are logical (such as in the rear portion of the frame), but others are silly, like a Trek one I have on my road bike that’s in the front wheel (thus useless on a trainer).

  18. Harris
    January 30, 2014

    I just purchased the Minoura LR760 and ready to get all the required accessories. I know I have to get the Minoura dongle to work with iPhone. My question, will the Garmin GSC-10 work with the dongle and the LiveTraining app? The Minoura site says LiveTraining works with any ANT+ sensors except Garmin and Digifit. But, if you continue reading down the LiveTraining page, it only calls out Digifit. I am thinking about the Garmin sensors so I am covered when I decide on a dedicated device (Edge).

    Last question, will other sensors work with a Garmin device like the Edge? I

    • Rainmaker
      January 30, 2014

      It works with the Garmin sensors. I think they’re a bit confused. It’s the Garmin & Digifit iPhone adapters that only work with their respective apps. From an ANT+ sensor standpoint (like the GSC-10), it works with every ANT+ device on the planet (I’m aware of no device/app it fails with).

      And yup, the GSC-10 will work with the Edge concurrently at the same time.

      Enjoy!

  19. Harris
    January 30, 2014

    Thanks for the quick reply, wow….awesome. I just found a great deal on Wahoo’s site for a bike pack that includes the sensors and iphone 4 Ant+ case…. Now I just may have to pull the trigger on it.

  20. Harris
    January 30, 2014

    Forgot the question, any experience with the wahoo speed and cadence sensors? Great deal if some confidence in their sensors.

    • Rainmaker
      January 30, 2014

      I’ve played with them a little bit. They are two-part sensors (unless you’re talking the BlueSC, which I have lots of experience with – all good there). That said, on the ANT+ sensors, I haven’t heard any complaints and they’ve been out a few years.

  21. Harris
    January 30, 2014

    Yeah, the two part is the only thing I hesitate on… Thanks so much for your posts, responses and just being willing to help.

    • Rainmaker
      January 30, 2014

      Yeah, it can be a slight downside, but also an upside if you’re bike is ‘complicated’. I actually cut one apart and extended it with some wiring from Home Depot once for an experiment (the Wahoo one) on how recumbent could be done. Kinda fun…

  22. Harris
    January 30, 2014

    Decisions…decisions. Definitely torn between the good deal ($70 for sensors and dongle) and wanting the GSC-10. To complicate the purchase, they also have wahoo dongle and heart rate strap at a killer price.

  23. BlinkyPete
    February 4, 2014

    Can anyone confirm the Garmin Edge 705 is ONLY compatible with the Combo Speed/Cadence sensors, and that it will NOT work with the newer speed-only or cadence-only sensors.

    I get the sense I am right about this, but I can’t find the actual words written here anywhere.

    • Rainmaker
      February 4, 2014

      Correct. Just pulled out one, no method to connect to speed-only or cadence-only sensors. Only combo-dishes.

  24. Al
    February 6, 2014

    Hello,
    I love reading your reviews! Thank you for them,
    I have a Garmin gsc 10 on my bike, I have paired it with my Harmon 401 and with my Oregon, and they only read cadence. The distance is always way off since I ride mainly in thick woods with a lot of switch backs. I had the same issue on other Garmins.
    How do you get them to display the distance of the gsc10 and not the GPS?
    I appreciate anybody’s help in this,garmin keeps telling me I have to buy an edge. Which I refuse to, I already have four Garmins, don’t need one more, and I know the unit is trading the data, I just hides it from me!
    Thanks
    Al

    • Rainmaker
      February 6, 2014

      Unfortunately, I’m not too familiar with the Oregon series, or Harmon. I don’t believe those units though have the option to change device source. Can you shut off the GPS on them? That would at least force it to the sensor, but I don’t know whether or not it uses speed sensor data at all.

  25. Al
    February 6, 2014

    Salut!
    Merci! That was a fast reply.
    Sorry, I didn’t catch the autocorrect feature, I meant the Garmin Foretrex 401, that has barometer and ANT+.
    Neither this one or the Oregon (just like a Dakota with a bigger screen) show a way to get the GPS off or read the speed of the GSC-10, but they recognize it can give speed and show the cadence fine.
    Do all the gps/watches you check that have ANT+ have the ability to read the speed/distance from the GSC-10 instead of the gps? Would be nice if we could read the distance from the sensor (that actually just counts how many times the magnet goes by the receiver) and the GPS was on to be able to map the ride, even if it is not that accurate.
    Thanks again.
    Au revoir!

    • Rainmaker
      February 7, 2014

      Pretty much all do, except the budget ones that don’t have any ANT+ at all (like the Edge 200 or FR10). However, the others that do generally still use GPS for recorded speed/distance, and just use the sensor for instant-speed instead.

  26. Ryan
    February 7, 2014

    Is there a way to transfer information from my bontrager node 1.1 to strava? I also have a garmin 310, but it doesn’t get the cadence. The info would be useful as I just got a trainer and would like to get more information than just my HR from my 310. The node has everything I want, I just want it to transfer to strava. I have a Bontrager duo track cadence/speed sensor on my madone 5.1

    • Rainmaker
      February 7, 2014

      No, the 1.1 doesn’t record anything. Just display only.

  27. Jeffrey Grabinski
    February 14, 2014

    Any idea why 2 people riding a Trainer Road wko using Ant+ cadence/speed would finish with the exact same distance covered on the Garmin at the finish despite one rider having 3 RPMs AND 78 watts averages more than the other rider for the entire wko? Thanks.

    • Rainmaker
      February 14, 2014

      Yup, all about gearing. I can produce identical speeds with different gears. Different gears also can mean different speeds and thus difference cadences and different wattages.

    • Jeff
      February 14, 2014

      I understand that you can spin faster in an easier gear and go just as fast as someone spinning slower in a tougher gear…. But if someone was spinning FASTER AND producing more watts (harder gear/better Pedal stroke)…. Wouldn’t that person go farther???

    • Rainmaker
      February 14, 2014

      Not if the resistance is different. Even a single turn of the knob (depending on type of trainer) can easily be 10% more/less. Same goes for tire pressure, tire type, etc… It’s surprising how many things play a factor in it.

      Ultimately, the singular challenge with Trainer Road is that unless you’re using a CompuTrainer/KICKR/PowerBeam, there’s no calibration aspect on the trainer – so it’s a bit of a swag (which they’ll happily admit to).

  28. Tim Daloisio
    February 15, 2014

    I currently have the Wahoo Blue SC on my bike paired with the Blue HR and the RFLKT which I like. But I am just getting into Trainer Road and don’t love the idea of having to repair the bluetooth between the phone and the laptop everytime I want to use it. I have a Garmin ANT+ stick and HRM from my Garmin 405 GPS kit. I’ve gotten that to pair to Trainer Road. If I want to use a Garmin GSC-10 ANT+ speed/cadence meter, will it work with the Wahoo Blue SC magnets? Or would I have to swap out the magnets to? (which would be a silly amount of work and make me rethink things again).

    Thoughts?

    • Rainmaker
      February 17, 2014

      Yes, you can use the same magnets. I simply have a magnet on each of my bike wheels and then whatever unit I happen to have installed at that time uses it.

  29. Claudio
    February 22, 2014

    Today I was at decathlon (french sports shop which you find all over Europe) and I picked up a b’twin branded ANT+ cadence/speed sensor for just 19€95 (b’twin is the decathlon brand for bike-related stuff). It looks very much like the Wahoo sensor you show in your post, with two separate units and a wire connecting them. I installed it in about 20s (it uses rubber bands to attach the two units to the bike frame), and I paired it with my 910XT without any problems. Link to the product page in French or in English (UK site).
    Had been hesitating for a long time on getting one of these, but when I saw the price, i didn’t resist one second!

  30. Luke
    March 20, 2014

    DC – after some help here – purchased a cycleops powertap speed and cadence sensor – identical to the wahoo model in this post.Just in the initial setup phase of using my cycleops fluid 2 with virtual training on my ipad – seems at the moment I can’t get the speed and cadence sensor to turn on, it might be something simple but the instructions that come with it are just how to install – do i need to replace the battery, flick an activation switch within the sensor itself…it seems you have been able to link yours with your iphone so wanted to ask – I have the wahoo ant+ dongle on the ipad but its just not picking up the sensor…..

    • Rainmaker
      March 20, 2014

      Sounds like battery. Sometimes, rarely, but enough that I hear about it, the unit gets set in an on-state in shipping/stock, and basically burns through the battery. Try swapping that out, and then go from there. It’s a cheap $2 replace from the drug store.

  31. heather
    April 1, 2014

    What setting have I messed up that my cadence/speed device only does speed distance? I really need cadence.

    • Rainmaker
      April 1, 2014

      There’s not any setting that makes it zero. Typically, that’s caused by the magnet getting slightly out of alignment. Validate the light illuminates when it goes past, and that the ‘Cadence’ data field is on the display.

    • heather
      April 20, 2014

      Thanks for the response. It was less than a hair off. Working great now.

  32. Michel Chevalier
    April 7, 2014

    Mr. Rainmaker,

    I enjoy your site a lot. Thanks for taking time to share your impressive knowledge with us.

    Just sold my road machine, and got myself one of those clever Brompton folding bikes. This bike configuration being anything but standard, there is no way to install my GSC-10 so it reads both cadence and speed. It’s one or the other. Right now, is’t picking up cadence only. Does it make sense if I install, along with the GSC-10, a third party ANT+ speed-only sensor?

    Would I be able to pair both sensors, with the 910XT? Or should I get a Whaoo, and go ahead with the modification you suggest?

    Thank you again.
    Michel

    • Rainmaker
      April 7, 2014

      Hmm, the 910XT does support speed-only and cadence-only sensors, so you could go in that direction. The challenge with going with a combo + a speed/only is that it’ll likely only read the combo, resulting in a wonky value for speed.

  33. Doug B
    April 14, 2014

    I currently have a Powertap G3, GSC-10 (aquired before I bought the Powertap) and use them with an Edge 500 and a 910xt. I’m trying to figure out if there is ANY benefit to keeping the GSC-10 on my bike, or if I am better off just removing it and using the Powertap exclusively for speed/ cadence information while inside, and cadence while outside? Remember, I already own both, so the cost isn’t really a factor here, just which option is better, lighter, more reliable, etc.

    Thanks, love your site!

    • Rainmaker
      April 14, 2014

      The GSC-10 will be more reliable for cadence in really high ranges (i.e. above 150RPM), but for 99% of day to day riding, no reason to have it on there give your setup.

    • Torsten
      August 18, 2014

      I’ve been starting using Powertap SL2.4 meanwhile four years ago – never had any problems. However, in order to make it ANT+-compatible, I’m planning to replace the speedhub’s internals to G3 (price tag for that is 380€ [Sportimport/Germany]). In the past, I’ve been using Powertap Cervo as computer, which will also be replaced by Navi2Coach. Question: do speed and cadence just appear as seperate ANT-sensors or how is the data transmitted? Cervo also shows this data but in fact I never concerned how that really works 🙂

  34. Konstantin
    April 29, 2014

    Good day!
    I’m interested in, and this sensor will work with Suunto Ambit2?

    • Rainmaker
      April 29, 2014

      Yup, no problems.

  35. Hans
    May 3, 2014

    I have a garmin gsc 10 speed/cadence sensor and able to pair with my Timex Cycling trainer. Thanks to your blog I am able to get very useful information and decide what I need.

    What I am curious how can I get the speed/cadence data to mapmyride app as they have sensor capability. I believe right now only Wahoo rflx+ capable doing so as the computer is ant+ and via Bluetooth 4.0 able to transmit to iPhone.

    Please enlighten me of you have any good workaround.

  36. Hans
    May 3, 2014

    I have a garmin gsc 10 speed/cadence sensor and able to pair with my Timex Cycling trainer. Thanks to your blog.

    What I am curious how can I get the speed/cadence data to mapmyride app as they have sensor capability. I believe right now only Wahoo rflx+ capable doing so as the computer is ant+ and via Bluetooth 4.0 able to transmit to iPhone.

    Please enlighten me of you have any good workaround.

  37. Marcelo
    May 13, 2014

    I have a Garmin Fenix 2 and was about to buy the garmin gsc speed/cadence sensor, but read lots of folks complaining about it being very non water resistant. That made me look into other options, and so far i guess the bontrager ant+ interchangable, and the wahoo ant+ cycling speed/cadence sensors are my other choices. Have any recomendations?

    • Rainmaker
      May 14, 2014

      Check out today’s post, especially the end of it. 🙂

  38. Adam Suhy
    May 14, 2014

    I have a Garmin Forerunner 305, and the GCS cadence/speed sensor. Do you know of any cheap receivers that will read the ANT+ signal (don’t care as much about GPS) that I could use for my longer rides? My Garmin won’t last long enough, and I’d rather have more data and less GPS if I can.

    • Rainmaker
      May 14, 2014

      The cheapest recording-capable devices would be the FR60 or FR70 watches (last a year on a single battery). No GPS data there, just SPD/CAD sensor support.

    • Adam Suhy
      May 15, 2014

      Thanks, awesome! Any other branded items that you could suggest? I’d also be OK with a handlebar mounted dedicated bike computer as well.

    • Rainmaker
      May 15, 2014

      Check out the Bontrager Node1/Node2. They don’t record the data for download, but do keep track. Sorta ideal for commuter bikes. Beyond that, it’d really be phone apps with adapters (if ANT+).

    • Adam Suhy
      May 16, 2014

      Thanks, between those I’ll find something in my price range, I’m sure. Thanks!

  39. Darren
    May 24, 2014

    Wondering what bike sensor to get that will go with my sunto ambit 2

    • Rainmaker
      May 25, 2014

      All of the above work with the Ambit2. You may also want to check out the new magnetless sensors from Garmin that I posted about 10 days ago.

  40. Andres
    June 3, 2014

    Is there a way to set the garmin computer (910xt) to ignore really high cadence? similarly to the way you can set it to ignore 0 cadence when calculating averages? The reason why is because when I go really fast downhill and Im coasting the sensor on the crank is right around the sensor on the bike, and slightly moving the crank up/down is making it think I have a cadence of 200+. I have tried coasting with the cranks on the opposite position, and I dont get those really high ridiculous cadence, but I dont feel as well balanced on the bike and cant go as fast downhill as I know I can.

    Thanks, Andres

  41. Andres
    June 3, 2014

    Is there a way to set the garmin computer (910xt) to ignore really high cadence? similarly to the way you can set it to ignore 0 cadence when calculating averages? The reason why is because when I go really fast downhill and Im coasting the sensor on the crank is right around the sensor on the bike, and slightly moving the crank up/down is making it think I have a cadence of 200+. I have tried coasting with the cranks on the opposite position, and I dont get those really high ridiculous cadence, but I dont feel as well balanced on the bike and cant go as fast downhill as I know I can

    Thanks, Andres

  42. Tom
    June 5, 2014

    Can I pair a polar wind cadence and/or speed sensor with a Garman 910 XT? I have tried a few times now, following the instructions on the garmin site. With no success. Am I doing anything wrong, or does this simply did not work?

    • BartW
      June 13, 2014

      No. Polar W.I.N.D. is a communication “standard”l from Polar and cannot be used by anything else than Polar W.I.N.D. compatible devices. W.I.N.D. devices are EOL (end of life). Garmin (and many others) use ANT so you will need an ANT sensor. Polar (and others) use Bluetooth smart for new developments.

  43. Ryan
    July 30, 2014

    Hi. Sorry if you have commented on the following before. I have the 910xt and the gsc 10. Indoors I know the gsc will measure your speed/distance and cadence. My question is outdoors: wich unit measures speed/distance outdoor – the gps or die gsc? Does the gsc only take over when the gps has lost signal?

  44. Jason
    September 1, 2014

    I just bought the new Garmin cadence magnet-less sensor and am trying to pair it with my Garmin Edge 500. I’ve gotten to the page that says Bike sensor present? and Yes. I tried to Search but it goes back to prior page. I tried Sensor Details and got to page with Sensor Status. But it won’t connect even after I check Cad Sensor. What am I doing wrong?

  45. Don Draginda
    September 8, 2014

    Wow, great info. Just got Vector. I use an Edge 500 and the GSC-10 combo sensor currently. From an earlier post I know the GSC-10 provides better info for cadence only in high RPM, for me, the cadence from Vector will be sufficient. I also know the Edge 500 uses GSC-10 cadence rather than cadence from Vector. I don’t care about indoor speed info and generally ride outdoors in areas with good GPS reception. Are there any benefits to keeping the GSC-10 installed?

    • DC Rainmaker
      September 8, 2014

      No reason at all to keep it there with Vector if you don’t care about speed/distance indoors.

  46. sergio T
    October 20, 2014

    good afternoon
    I’m really impressed with the quality of their assessments.
    I wanted to ask you a question
    I have a Garmin 800 and I use it on my bike that has just spining wheel ahead.
    The question is what speed and cadence sensor compatible with garmin, the best price and to allow me to get the two values​​. Assuming that the assembly depends on the context. For example compatible with the Tacx or the BTwin.

    thank you

  47. Wojtek
    November 21, 2014

    As this is an old article, I don’t really expect to get a response, but still it is worth to try. As I need to send back my FR610 for repair, but still want to continue indoor cycling with my Ant+ HR, speed&cadence, I wonder if anyone of you knows a cool&free Windows application that could capture such data. I am not looking for a virtual trainer for 15USD/month, but just a free app that allows me to display&store data when my Garmin will be not at home.

    • DC Rainmaker
      November 21, 2014

      Yup, see today’s post: link to dcrainmaker.com

      But, in short, Golden Cheetah is free and will do it for you.

    • Wojtek
      November 21, 2014

      Cool – single comment and in few moments there is a full review of all options 🙂 You are the best 🙂

  48. danial
    November 28, 2014

    Hi..i hv a garmin fr620..can i pair it with my cateye strada slim cyclometer on my roadbike? It is a speed-only cyclometer.

    • DC Rainmaker
      November 28, 2014

      Generally no, as the FR620 can only pair with ANT+ devices, and within that, just the ANT+ Speed/Cadence sensor. It does not appear that the speed sensor there is ANT+ wireless.

    • danial
      November 28, 2014

      Tks for yr response. If so, can my fr620 still capture the speed and route while riding if i don’t pair it with any ant+ sensor?? I will still use my current cateye sensor but i need the fr620 for the speed data and route taken. Possible?

    • DC Rainmaker
      November 28, 2014

      Yup, correct. The FR620 will use GPS when outdoors – so no need at all for a speed sensor in most situations.

  49. Bruno Mosto
    November 30, 2014

    Hi, i have 2 bikes with a cadence/speed sensor each, I want to buy a 920xt garmin…. this watch could reecognize both sensors choosing the bike (bike 1 or bike 2), or i have to syncronice every time i want to change the bike.

    Bruno

    • DC Rainmaker
      December 1, 2014

      As long as you have two sensors, you can save them both as separate sensors with the Garmin Forerunner 920XT, no problems at all there. It’ll automatically detect either sensor when you start pedaling.

    • CLAIRE
      April 13, 2018

      I have a 920 and a Giant ANT but it can’t be found. Are you aware of these issues?

  50. Shannon
    December 27, 2014

    Since this is ANT+ and Suunto Ambit 2S supports ANT+, can i assume both products will work fine? 🙂

    • Ray Maker
      December 27, 2014

      Correct. As always with the Ambit series, it may take a try or dozen to get it to pair to ANT+ sensors. Sticking them right next to the watch for initial pairing is often required. But once paired once, you’re good to go from there on out.

  51. ANA
    January 14, 2015

    I have the Cateye/garmin speed and sensor mounted in two different bikes. I’m trying to use the Garmin 910xt but the Spd/Cad sensor is Not connected. It’s showing Sensor ID “0”. What do I need to do to make the sensor to work Bike2. Do I need to reset everything and start over? Very frustrated… I appreciate any help.
    thanks

    • Pradeep
      October 2, 2015

      hi i am facing the similar issue on my garmin 910xt.Not able to pair the new magnetless speed and cadence sensor.It says speed and cadence sensor connected but the sensor ID is blank.Could you let me know if you found out what was wrong.Thanks.

  52. Kodchakorn
    January 28, 2015

    I have a Timex Cycle Trainer 2.0 GPS and looking for the speed/cadence sensor
    Is Bontrager Interchange ANT+ Combo Sensor can work with ?

    Thank you.

  53. DC Rainmaker
    January 28, 2015

    Yup, it’s compatible here/there.

  54. Carl
    February 22, 2015

    I recently purchased the gsc 10 and am having trouble pairing it with my powertap pro t… It my first attempt using any of these other than using the powertap for heart rate which it works just fine. Any suggestions would be greatly appreciated.

    • DC Rainmaker
      February 22, 2015

      I’m not sure I understand. The PowerTap pro includes cadence already (as well as power and speed). It doesn’t transmit heart rate though.

  55. Joel
    February 27, 2015

    I have an old Minoura MAG 850 & and a even older TACX Cycletrack Mag trainer. I want to get a speed/cadence sensor so I can hopefully train with ZWIFT. Any suggestions? Or am I out of luck and need to get a new trainer?

  56. Pots
    April 14, 2015

    I’ve recently upgraded from a Garmin Edge 305 to a Garmin 500 Bundle. I’m trying to use my previous ANT+ Bike Speed/Cadence Sensor on my commuter bike and my new ANT+ Bike Speed/Cadence Sensor on my road bike. I don’t get any speed or distance reading on my 500 for my commuter bike setup. I’ve physically remove the ANT+ Bike Speed/Cadence Sensor from my commuter bike the speed and distance are properly displayed and seem accurate.

    Advise would be greatly appreciated. Thx

  57. Recumbent Bike
    April 18, 2015

    I have read your page already and gotten many information about bike details. I have some information about Recumbent bicycle and Recumbent Bike. I’m trying to use the Garmin 910xt but the Spd/Cad sensor is Not connected. Thanks for shearing this page.

  58. Ricardo
    August 11, 2015

    Hi, very good post!
    I am new to those wireless technologies in the bike. I still use a bike computer with wires for speed and cadence. But it is gettin old and sometimes it stops working in the middle of the ride and that makes me really mad!

    I am currently looking for a new computer and there are many different options available. And I will also use it for running.
    But I find it hard to get one to be used in the bike and in the wrist. I mean, the Garnin 310XT or the Suunt Ambit for example are very good for bike and running (swimming also) but I don´t want to keep looking at my wrist to see speed and cadence while I´m on the bike.
    also I have two main questions:
    1- Which receiver would you suggest to use for running and cycling that can be easily taken of from the wrist and put in the handlebar of the bike?
    2- If there is no good option for the question 1, than the solution would be to use a watch and a cycle computer. Can an ANT+ transmitter (HR, Cadence) be paired at the same time to 2 different receivers (watch and bike computer)?

    thanks for the helpful post!
    Ricardo

    • James
      August 20, 2015

      Ricardo, try the Garmin 920XT. You can add a quick release kit to move it from your wrist to the bike. DCR has a great write up on this device here.

  59. Bruno Kolovrat
    August 24, 2015

    Hi Ray,

    thanks for these informative and through reviews. Thumbs up!

    I recently bought the Forerunner 920xt and now I am looking for a speed/cadence sensor. I’ve read both of your posts, this one about the Garmin GSC 10 combo or the new magnet-less speed and cadence sensor, reviewed here link to dcrainmaker.com. The price for the GSC 10 is almost the half of the new ones.
    Also, how relievable is the GPS speed sensor on the 920xt since I will be riding 99% of the times outdoors. If the reliability is good then I could just go for the new magnet-less cadence sensor only?

    I’ve been through all the comments here but I couldn’t find any related answers. I apologize though if there is some but I missed them.

    Thanks a lot!

    Bruno

    • DC Rainmaker
      August 24, 2015

      I find that the GPS sensor is more than fine as long as you’re not doing a lot of mountain biking. But for road biking it’s perfectly fine.

    • Bruno Kolovrat
      August 24, 2015

      Thanks!

  60. Mauricio Solis
    October 20, 2015

    Any comments regarding the Giant RideSense? I just got a 2016 Defy Advanced Pro 2 and it comes with this, is it worth to use it? I’m planning on getting a Garmin 520 bundle which comes with the cadence sensor, so should I just stick with the garmin unit and remove the ridesense? Any apps that will connect directly to this ridesense or definitely need a garmin u other units to track it? Thanks

  61. albert
    November 21, 2015

    What happen if i wanted to wash my bike? Should i take the sensor off first? or can i wash it without ejecting it? tks

    • DC Rainmaker
      November 21, 2015

      No problem, just don’t spray it directly too hard, but otherwise just fine.

  62. dan
    March 30, 2016

    Thank you for the informative article &comments. I recently purchased a tadpole trike and have a Garmin 405cx paired with a gsc 10 unit. I do not have the speed sensor set up because cranks and wheels are separated and I’m fine with that because I am using it for cadence training. My problem is, the cadence is displaying at 1/2 its actual value (ie I am pedaling at 90, but the unit is displaying a cadence of 45). Any suggestions?

  63. Mind
    August 24, 2016

    Hi
    I am using a Wahoo Blue SC speed/cadence sensor with an Edge 520 (also own FR305 for running and edge 500 for mtb); I have never had a problem with a Garmin device.

    I am getting ghost (error) speeds very often with the wahoo sensor [which are killing my videos].

    I have been contacting their customer support and I have received some emails back but I suspect that, no matter what they say; they are still behind Garmin in terms of quality and reliability. They adviced to do the trivial: replace battery and get sensor closer to magnet; did that and still same results

    I will be ditching the wahoo sensor and will be buying a Garmin speed / cadence sensor. I need a stable and reliable speed sensor [to be installed in look 695].

    Do you recommend the Garmin magnet less sensors or the bullet proof [though bulky] GSC 10?

    Thank you

  64. John B
    February 4, 2017

    Hello Ray,

    Excellent site, please keep up the great work!

    I have been doing some aerodynamic testing on bicycles and logging the speed through a speed and cadence sensor. One interesting thing is that the old Garmin GSC 10 unit sends a signal at every magnet sensing event, whereas the Bontrager DuoTrap / Motorola style send an update every second.

    The ANT+ protocol for speed/cadence meters give the time of the last event and cumulative revolutions. So at 25mph there will often be about 4-5 updates on the Garmin unit, there will be 1 on the Bontrager. The speed is calculated with the equation:

    speed = change in wheel revolutions x wheel circumference / change in time

    At constant speed, both should be equally accurate, however for fine measurements while accelerating or decelerating, the old Garmin GSC 10 gives a better data read out. The quicker update also leads to a nicer real time display.

    As Garmin has changed there speed detection method to the accelerometer style which seems less accurate, it would be interesting to know if anyone is still making an ANT+ magnet sensor that updates on a per event cycle rather than the constant 1hz.

  65. Ajahnae Hinley
    March 19, 2017

    Hi there,
    I have the Suunto Ambit 3 watch and I understand many of the cadence /speed sensors aren’t compatible. Are there any wireless ones compatible that you’ve come across since the release of the Ambit3? I want to use on my bike for indoor use and of course outdoor (to the extent the watch doesn’t have a feature).

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