Adrian Tuddenham wrote in message
valid.invalid...
N_Cook wrote:

Jeffrey Angus wrote in message
...
On 9/29/2011 10:22 AM, N_Cook wrote:
Try posting to r.a.r.p ?

That would be rec.antiques,radio+phono or is
that a different group you had in mind?

Jeff

--
"Everything from Crackers to Coffins"

yep


To OP, would that use shaded pole motor and then fixed gearing?

Capacitor start/run motor with rubber idlerprimary drive; then pulleys
and a flat belt to the final drive roller shaft - so there's plenty of
slippage to give measurement errors.

Also, the machines I have seen in the UK have 60 c/s motors adapted for
50 c/s, which have very low torque and a high slip frequency on load.

(The only fixed gearing is between the drive roller and the leadscrew.)

--
~ Adrian Tuddenham ~
(Remove the ".invalid"s and add ".co.uk" to reply)
www.poppyrecords.co.uk


For the Kennedy material someone melded the dictaphone audio to the 24? fps
of film so if any repeat noise/clicks on the belt would then be synced to
the film and a forensically accurate timing to determine the number of shots
or echoes