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Sep 17th 2019, 01:05 PM   #1
 curve addict's Avatar
 
  Apr 2016
  Des Moines, WA

  ...1987 Yamaha FZR1000...
Help with determining gear ratios vs speed

I was on another forum and this thought came up: Gear ratio changes, buzziness at certain speeds/RPM range, etc.

Here's a spreadsheet that I've tinkered with. I used it when discussing gearing and final drive ratio changes with my clients:
Provided you pay attention to where in your RPM range your buzzy spots are, prior to making changes, it can help to pinpoint where those buzzy spots will move to, after the changes. The spreadsheet isn't perfect but I continue to tweak it now and then. Anyone want this? You may have to import it from its current ods format.
Help with determining gear ratios vs speed-p9170357.jpg
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