[sdiy] OT: home organ Leslie hacking

[Roy J. Tellason]

On Thursday 13 January 2005 04:46 pm, rkmoore at memphis.edu wrote:
> > I remember an article some years back in Popular Electronics,  I think it
> > was, where they offered some sort of a device you could build to
> > *slightly* vary the speed of a synchronous motor.
> >
> > I never considered using one of these in a Leslie speaker,  but
> > thought it would be kind of nifty to add pitch bend to a Hammond!  :-)

> I remember hearing a Groove Holmes recording where he does a pretty
> incredible downward pitch bend in the middle of his Hammond solo.  I
> always wondered how he did this.

I have known some Hammond players who would,  in the middle of playing,  reach 
down and turn the switch OFF!  Then start the motors back up again before 
things died completely...

Maybe that's how?

> If I could add a speed control to the tone wheel motor on my hammond safely 
> I would love to do it.  It would be nice to have a pitch bend or fine tuning 
> control.  One on the leslie would be great, too.

I think it's possible,  as long as you don't try and go too far.  Whether 
going too far would be in excess of the point where you start getting some 
interesting musical effects is another matter,  though,  and one that could 
be found only through some experimentation...