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In Reply to: RE: Papst motor rotation posted by twystd on September 22, 2015 at 22:29:03
twystd,
I just did a quick sketch and I think the motor rotation direction for belt drive and idler is the same. I may very well have totally screwed this up, but do a sketch yourself and see what you think.
By the way, if your L-34 came with the cylindrical ROK motor - not the Borg death cube - that's not a bad motor with a little TLC.
Good luck with your project.
Doug
Follow Ups:
To double check, I had the original ROK motor running the platter, and the platter was spinning clockwise, but the motor was spinning counterclockwise. The Papst motor was running clockwise, but coffee-phil enlightened me on how to reverse the rotation, so that hurdle is cleared. I'n not trying to point out that you are wrong, but in case another inmate is contemplating a swap like this, they may find the info useful.
I just like the added inertial energy from the "flywheel" motor, plus the hysteresis synchronous motor is more immune to speed variation due to line voltage fluctuations. Another plus is I don't have to wait 20 minutes for the motor to stabilize, and should have a lower noise floor (I hope).
twystd
twystd,
No problem, just sight chagrin.
I just checked my 401, which is what I should have done before posting. I drew the sketch with the idler on the outside of the platter so of course everything was reversed.
Too early this morning and not enough coffee to be messing around with multiple rotations.
I'm glad Coffee Phil was able to provide the information you needed and I may want to use it myself someday.
As I said earlier, good luck with your project. ROKs are fun when they get buffed out.
Doug
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