theinrichs wrote:Thanks, Dusty! I’m a fellow Kentuckian although I’ve been in San Diego since 1990 courtesy of the U.S. Navy and retired from the Navy eight years later. My wife and I originally are from Newport, across the Ohio River from Cincinnati. I went to the University of Louisville and my wife went to UK!
To answer your question, the motor wasn’t changing speeds even though I was turning the speed controller. It seemed to be stuck at a constant high speed. I will try your suggestions. Should I try this repair with the headstock in drill press mode or by taking the headstock off the tubes? I was looking at Jacob’s you tube videos and he has one where he works on the sheaves.
Do not let that 'Wildcat' from Arizona confuse thee. That is a different breed of wildcat!
One thing concerns me greatly. It is necessary to be very explicit when describing this beast. My question was 'what' was changing speed. You stated "the motor wasn’t changing speeds even though I was turning the speed controller".
This indicates to me a misunderstanding of how the beast works.
First the MOTOR does not change speeds when the speed control dial is adjusted. The motor only alters speed as a result of mechanical loading etc..
Speed dial adjustments alter the position of a control sheave(the middle pulley in Dusty's diagram) along the idler shaft that causes the idler pulley to open/close(right pix/left pix).
The floating sheave on the motor pulley(the lower pulley) responds by moving thus closing/opening.
My suspicion is that the floating sheave may be stuck and does not allow the pulley to open up and thus reduce the speed of the other pulleys.
IF I understand your meaning, the quill shaft rpm remains fast even though the speed control dial is adjusted towards slow. To get ANY reduction in speed would require great torque to be applied to the speed control dial to even get it to move.
I fear we may be not be completely/accurately understanding what is actually occurring