22 Sep
2006
22 Sep
'06
7:24 a.m.
From: Patrick Finnegan <pat at
computer-refuge.org>
On Thursday 21 September 2006 17:28, Tony Duell wrote:
Hi
Although not recommended, years ago we got some 8 inch drive at surplus
that were 50Hz. The drives were cheap and we didn't want to invest a
lot. We simply ground down the motor pulley with a file. We checked our
progress with a strobe disk on the flywheel. It did require elongating the
mounting holes for the motor.
Today, we'd most likely just use a lathe and turn what we needed.
Dwight
And those were the easy drives. I guess RK05s
wouldn't be too hard to
find 60Hz pulleys for either. What about RX01s/02s? Do RK07s need
converting? RL's I know don't. But my ASR33 would. And all my audio tape
recorders (some of which may never have had 60Hz varients).
It'd probably be easier (and make more sense) to just get a frequency
converter (like maybe a varible frequency motor drive which can output
50Hz)...
Or, if you prefer, a pair of motors with the shafts connected, and the
right
RPM ratings, which will do the frequency conversion for you (certainly at a
much less reasonable efficency).
Pat