[sdiy] Strobe tuners & synchronous motors rerevisited

[mike ruberto]

If you are gonna hack up old Hammonds look for the old spinets like I
have - 524 or similar. Some people are begging to have them taken out
of their garages these days. I got mine for $50 in a consignment shop.
It has most of the same stuff as other Hammonds have inside but solid
state electronics.
I have been hotrodding mine over the past year or so and have it
sounding pretty close to an M series now.

The classics need to preserved. Rip up the spinets, they have no
vintage appeal to anybody.

Mike

On Mon, Apr 21, 2008 at 2:59 PM, Roy J. Tellason <rtellason at verizon.net> wrote:
> On Monday 21 April 2008 14:27, anthony wrote:
>  > I found an induction motor from an old clock that had a magnetic rotor. Do
>  > you think that would work sufficitently as a synchronous motor for a strobe
>  > tuner? With the gear train removed, it doesn't have a lot of torque and the
>  > direction it will turn is indeterminate (is that what the startinng motor
>  > is for on Hammond organs?).
>
>  No,  the starting motor is because synchronous motors back then didn't have
>  enough torque to get things going,  though they could keep them going once
>  you got some momentum built up.
>
>  No way should a clock motor be indeterminate as to direction!  There's usually
>  a "shaded pole" (looks like a loop of heavy wire) that decides that.
>
>  > I know some synchronous motors have designs with definite rotation direction
>  > that's usually selectable. I also wondered if this motor motor I got from an
>  > 8-track recorder is a synchronous motor: it runs right off of the AC line at
>  > 117VAC (In Japan maybe)
>
>  Japan uses 100VAC.
>
>  > with a speed of 18,000 RPM... It's a cool motor at any rate.
>  >
>  > Incidently, the old Hammond organs that I can get for cheap or M100's and
>  > L100's, not M3's does that make it less of a sin to use them for parts?
>
>  No.  :-(
>
>
>  --
>  Member of the toughest, meanest, deadliest, most unrelenting -- and
>  ablest -- form of life in this section of space,  a critter that can
>  be killed but can't be tamed.  --Robert A. Heinlein, "The Puppet Masters"
>  -
>  Information is more dangerous than cannon to a society ruled by lies. --James
>  M Dakin
>
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