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

First, their symbols for microphone recording is bad. When the microphone is blue, then that means it's recording. I thought it was a button that I needed to press to start recording. Second, as I pluck the belt, I don't get near consistent frequencies. I get 20Hz, 40Hz, and 85Hz among others. This means the method of plucking has enough variation to render the test useless for tuning. There's gotta be a better way. I'll pay for a tool that'll physically measure the tension.

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!

The old app was great. Pretty accurate readings were given. Since the new update/redesign the app is pretty garbage. I can get readings, but the timeframe of when I actually get the reading or what it's getting it from mis random. This is coming from a zero tech who works with this app pretty frequently. It takes me twice as long to get a belt tension done because I can't tell what the hell this app is reading for sound.

What's new

Fixed Android 11 support