848 Pitch App. For Iphone.belt Change.

Old rider · May 14, 2017

vj60 said: ↑

Thank you all for your help as without your input I would of not attempted this considering my little experience!
Belts are fitted. My biggest fear was the cams moving on the vertical cyclinder so I made two cam holders for both cyclinder. I agree with 'Older rider' the app was good but getting a consistent reading is difficult. It appears to me that getting a clean pluck with your finger is key, however I still got some strange readings when I know the belt was tension to 106hz the next pluck I would get a reading of 23 or 323 etc! Just as a test I ran the motor up to temp.(102c) then checked the belt tension which was with cyclinders at TDC due to the metal expansion the reading was almost doubled on both belts to 202!
Many thanks Vince View attachment 88767
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Yup, consistent pluckng is not easy and your finger gets a bit sore too...

Old rider · May 28, 2020

Old rider said: ↑

It's probably a good idea to get a cheap microphone to plug into your phone or tablet. Much easier than trying to get the built in microphone close enough to get a good reading. Getting a good reading is the most frustrating part of the process, I found.
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Disagree @Davyd?

848 Pitch App. For Iphone.belt Change.

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848 Pitch App. For Iphone.belt Change.

Old rider Elite Member

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