25 Aug
2004
25 Aug
'04
6:57 a.m.
From: "Tom Jennings" <tomj(a)wps.com>
THe worst part -- the motor had a trimpot in series with it, and that
was the sole motor speed control -- and! -- tapes written at one speed
adjustment could not be read at another speed!
Of course I turned the pot, my fault. But just tapping it was enough. It
was total crap.
Hi
Most of these motors used an internal centrifugal speed
governor. These were designed to work within some span
of input voltage. I would guess that the pot was to drop
the voltage to be within this range. If one was to adjust
the pot, there should be a range of adjustment that the
speed ( with load ) was relatively constant. One would
adjust the pot to be safely within this span.
Dwight