[Jukebox-list] Rockola Tempo2 Speed

Ron Rich ronnnrich at yahoo.com
Mon Nov 5 16:07:42 PST 2007


Bob,
  I gave up long ago trying to 'splain" that the wheel size is not relevent--no one seems to ever believe it !  Ron Rich

Bob Ellingson <bobe at halted.com> wrote:
  At 02:52 AM 11/5/2007 -0500, you wrote:
>Bill, keep it simple. If the tape increased your speed to the correct
>speed, that tells you that the ratio is slightly off between either the
>motor end piece which engages to the idler wheel, or the idler wheel is
>slightly too small. 

The size of the idler wheel will not matter! If you calculate
the ratio of the idler wheel to the motor spindle, and then 
the ratio of the turntable to the idler, you will see that it
cancels out:

Spindle Idler Spindle
-------- X ---------- = --------- = Speed
Idler Turntable Turntable

The problem has to be friction, slippage, or mis-match
of the spindle-to-turntable size. This isn't in a 50 Hz
area, is it? Maybe the spring that enlarges the spindle
for use in foreign areas has fallen off?

--Bob
=======================================================================
Bob Ellingson bobe at halted.com
Halted Specialties Co., Inc. http://www.halted.com
3500 Ryder St. (408) 732-1573
Santa Clara, Calif. 95051 USA (408) 732-6428 (FAX)

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