Just for interest sake, any comments on the following excerpt of an email I got recently for tensioning 4v cam belts;
SPX is no longer reselling the belt tensioning tools to me at a dealer price, so I have stopped selling the tools. Instead, you can use the "sonic" method referenced in the factory manual for ST4s. You want a vibration of 112 Hz. Please read the e-mail from the ST owners list referenced below for more details. For the actual frequency measurement, you can download the FREE software from this link:
http://www.techmind.org/audio/#mustun (download his frequency counter) And then any cheap microphone plugged into your computer in combination with this free software replaces the >$400 handheld gauge or the multiple thousand dollar Ducati "mathesis" tester.
Questions;
Anyone tensioned belts this way?
How would you calibrate the microphone (take a reading from existing tensioned belts?)
Would any "cheap" mic. work, or would it pick up too much interference?
And finally; 'Cat among pidgeons' also springs to mind
Cheers,
Pete.