[sdiy] DIY strobe tuner?

[Roy J. Tellason]

On Saturday 08 March 2008 22:10, anthony wrote:
> > It would have to be a synchronous motor,  but I sure wouldn't be
> > butchering some old Hammond organ to get one,  there are probably other
> > sources for them out there.
>
> What exactly is a synchronous motor anyway?

One which has a speed determined by the frequency of the AC input rather than 
other factors,  though loading one seriously will slow it down.  Clock motors 
are typical,  with much gearing attached.  Though one that I bought thinking 
it was of that type actually _ticks_ and I ended up having to sit it on a 
scrap of carpet to keep the noise from spreading.

> I knew it wasn't the same as a universal, but I didn't know which the strobe
> tuner used. 

I would think that it used a synchronous motor,   yeah.

> What if the rest of the Hammond organ is sufficiently trashed to be
> unrestorable? Like a three-day death-from-above shower from an overflowing
> toilet? The extent of trashednesss has yet to be determined. The only thing
> standing in the way of me having the whole organ is plunking down $50. It's
> not going anywhere. If I was a little more solvent, it'd be mine already
> just for the reverbs and iron.

I got one some time back from a "cat lady" (she actually has a local animal 
shelter named after her).  It never came inside,  but instead lived on my 
covered porch,  that I had at that time.  The generator assembly was fine,  
the cover having protected that assembly,  but the keyboards and case were a 
problem,  with cat urine having penetrated enough to have corroded open some 
of the resistance wires that connected to some of the key contacts.  It was 
repairable and restorable,  though I never did finish it due to other things 
happening in our lives at that time.

-- 
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"
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