Wahoo Rpm Cycling Speed/Cadence Sensor for Outdoor, Spin and Stationary Bikes

I've been using Runmeter on my iPhone to track my rides. However, while using GPS for pace is fine for running, it's not so good for tracking speed, as GPS has a natural delay and doesn't update as frequently as needed to give a truly accurate speed reading. Having a dedicated sensor solves that problem.What attracted me to this was how there is no magnet. For those who aren't aware, traditional speed sensors require placing a small magnet onto a spoke, and then mounting a sensor to the frame. You had to get them just right, too, particularly with keeping a small a gap as possible between the magnet and the sensor. Plus, I was never fully confident the speed was very accurate since the calibration is done using your wheel diameter and the magnet/sensor might anywhere within that radius.These sensors use a gyroscope to sense actual motion. The speed sensor goes onto the hub of a wheel with a rubber band, which is quite beefy and holds tight. It's that simple! The cadence sensor was just as easy -- use the included zip ties to secure it to the inside of the left crank arm, and done! I have no worries that either will fall off.Pairing them with my iPhone 6 Plus was perfectly easy, too. I had to wait for one to go to sleep before I could pair the second one, but that wasn't so bad and I had no problems at all. I've read other reviews where people said they wouldn't pair or stay connected, but I wonder how much of those were due to personal savviness and rather than the product itself. For me, everything worked perfectly during setup. I've been on several 30+ mile trips since the sensors were installed and I haven't had a lick of trouble.Speaking of Bluetooth, I must say that I haven't really noticed any reduction in battery life on my iPhone after putting these into use. I'm sure it does take a little extra juice for my phone to use them, but the difference has been imperceivable (which is to be expected from any Bluetooth Low Energy device).They'll emit a quick blue blink once every couple of seconds so that you'll know whether they're on. But it's not excessive and you won't even see it while you're riding. The only time I've noticed it is when walking my bike in and out of my apartment.Note that you're not restricted to using the app provided by Wahoo to track your speed and cadence. Most of the well-known fitness apps include functionality for using external sensors, you just have to make the app aware that you have them, and they'll use them.There's only one complaint, and it's trivial. When I pulled these out of the box, they were already blinking at me. The means that at any point during shipment where there was motion, they were on, wasting the battery away. So, the cadence sensor is already at 50% on the first day. I don't know if they came from the factory without a battery insulator, of if perhaps mine was a returned set where the insulators had already been pulled out (but mine seemed brand-new). Whatever, it's okay -- they're replaceable and certainly has no bearing on the quality of the sensors themselves. The batteries are supposed to last a year or two, so it's fine.Wahoo seems to be the leading innovator in Bluetooth and ANT+ sensors intended to be used by third-party apps. These are working beautifully for me, and so were worth every penny!

I’m an old man who still needs to exercise.I have used these on my outdoor bike with an indoor bike trainer to keep me from slacking off. Since being retired I find slacking off is much easier than it used to be.So far they have worked flawlessly and connect seamlessly to the free app that works on android or IPhone or tablets.I set mini goals like increasing my average speed or cadence daily by a small amount. I listen to a book on tape (on my phone) while tracking my speed and cadence on my tablet It makes that daily exercise routine something I almost look forward to.Feel better, not much improvement in my looks however😀.Beats the old magnet type Speedo’s and is a great value IMO.

I'm suing these sensors on a Sunny Spin Bike. For the data collection side, I use either Garmin VA3, Forerunner 235 (both of these with an additional app) and the ios Wahoo Fitness App. Connection was fast an deasy. I recommend using ANT to connect to the Garmin devices, so the BLU is open for other connections (Zwift). So far, the cadence works great; it adds some indication of the workout demands. Some use this with Pelaton; I'm trying to go Zwift.So I tried (1) velcro and a plastic wrap/cuff to hold the piece in place on the axle on the left side of my flywheel. It fit, but (on my bike) that metal piece is a cover that doesn't turn. (2) connect directly to the flywheel length parallel to the axle. Works, get a read, but the mph is way off. I've been trying to adjust it by changing the wheel circumference. It works, but I notice the mph jumps around (but the average looks good). (3) connect directly to the flywheel length perpendicular to the axle. This one looks like a winner. I put the circumference back to the true value and biked for 20 minutes. Looks solid. Not sure about the numbers.So I went on line and found that, on average, at a cadence of 80-100, the average spin class distance covered in 15-20 miles/40 minutes. I bike 20 minutes and would expect to cover 7.5-1 miles. Using the correct circumference, length perpendicular, i am getting 20 mph or 7-7.5 miles per session which matches the average. So, I'm happy with this.I know its not a true number or even truly accurate, but everyone needs feedback to judge improvement. For me, this will do it.

I wanted to use Zwift to virtually ride with friends. I have a simple (dumb) trainer and needed sensors to make it work. Once I activated the sensors, they paired easily with my phone and computer. Unfortunately, when I tried to attach the speed sensor to the rear hub, the strap just snapped. I have it held on with a zip tie. Since I'm inside, I'm unlikely to lose it if it goes flying off, and there are no bumps to worry about.It's a bargain compared to spending hundreds or more on a smart trainer. It can't tell how much resistance you have, but it does what it's supposed to if you can attach it.

When looking for a speed/cadence sensor there's really only two things that are important: Accuracy and durability. Wahoo does a great job with both, and they link very easily to my wahoo computer. Some issues I have found are that the way the cadence sensor is mounted can be difficult for some people. There are 3 options, mount to shoe strap, ziplock on crank, or double sided tape to crank. Mounting to shoe is usually the most convenient but with double boa shoes this isn't possible, and double sided tape/zip lock are difficult to remove for battery replacement. Some people might also have an issue with the cadence sensors profile when mounting to the crank, it can either rub against your shoe or hit the frame depending on the side. However if you have a strap on your cycling shoes this would be an excellent product in my opinion.