RPM Measurement App

[carlthess40]

Well I found out what was going on
And a few of you guys were right about the 50/60hz issue.
I did measure he old and new ( or old unused ) capstan
The difference is so small and with my eyes not being so good anymore, there was a 1/2 mm differences between the two. Neither one was marked , they are more. I cleaned the capstan that was on the motor and polished it very well and checked the measurements several times. The little drawers caliber I have is solid brass and a little dull and somewhat hard to read. After cleaning it and the capstan, I finally could see just a small 1/2 of a mm of the capstan that had The burnt rubber on it was the smaller one. I reinstalled it and ran the RPM app and now only have a 1% speed difference
Today or sometime this week I will hook it up and run a app that monitors the sound from a reference album and see how close to 33.5rpm it is
Just want to say thank you for everyone’s thoughts and input about this project and getting me on the right path to fix it
I can’t see how to add pics on here , I will on one of the other forums that I posted about this problem