Carbon Drive

Gates Corporation

About this app

Gates Carbon Drive is the high-tech belt drive for bicycles, motorcycles, & scooters. This app measures belt tension sonically. Just pluck your belt like a guitar string and use the microphone on your phone to read the vibration frequency. Compare your bicycle belt’s frequency to the included chart to see if you need to adjust the tension. For scooter/motorcycle tension recommendations, compare to your vehicle owner’s manual.

Other available features for bicycles:

Interested in key parameters of your bicycle belt drive like speed ratio or center distance? Want to know what belt lengths or sprocket sizes will fit your bicycle? What about comparing one bike to another to tweak your ratio perfectly? With our calculator, you can stay on top of the perfect setup for your drive.

- Find key parameters of your drive such as speed ratio and center distance.
- Change belt length or sprocket sizes to better suit your riding needs.

Ratings and reviews

I used Carbon Drive to set the belt tensions on my exotic sports car. It worked perfectly. Two things that will make this tool easier to use: 1) Be very close to the belt with the microphone of your device. 2) Kill all sources of noise in the room, especially air conditioners and fans. They put out noise in the same frequency range and will mess up your readings. A third suggestion is to look closely at the microphone opening in your device. It's likely clogged with lint and crud. Clean it up!

Completely useless app. Frequencies are all over the place using the exact same position and finger and strength. Closing and opening the app and changing literally nothing about the bike and you can count on getting wildly different results. I wouldn't rely on this app to tune anything. Also whoever's idea it was to kill the app instantly in the background so you have to find and open it again and watch the dumb video that automatically should never develop another app again.

Used to work, now it only reads>110HZ if at all, regardless of belt tension or no tension at all. My belt was completely slack and it read 110Hz and higher. Most of the time it doesn't even register readings. The line vibrates indicating it is picking up the input from the belt, but no registration takes place. Gates put more focus on making this app- a tool for those who already have the Gates drive systems- spam the user with unnecessary videos.

What's new

Extended compatibility to older Android OS versions