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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!
This app is good only to remind yourself what the acceptable frequency range is for your bike. The frequency detection is useless. Instead, use the Spectroid app with these settings: Sampling rate: 16kHz FFT size: 8192 Decimations: 1 Window: Hamming Smoothing: 0 After plucking the belt you should see all frequencies jump, but one frequency will decay slower than the rest, and Spectroid should detect it as a peak. That's the fundamental frequency that you're trying to adjust.
6 people found this review helpful
It seems like a decent app until you actually try to use it. It would not pick up most of my plucks, even when I tried using a smooth allen key to protect my finger and plucked hard enough to make the whole bike vibrate. I took in a bedroom to avoid even refrigerator compressor noise. Also tried with two different phone models. It would capture about one in six tries and the results were usually around 26 or in the high 70s.
4 people found this review helpful