whirly bird!

[fopoman]

mock up of my recycled baldwin organ...now to figure out a speed control. Any ideas?

[Cantplay]

Sewing machine pedal?

John

[selloutrr]

is it AC voltage that determines the motor speed?
You could use a dimmer.

[Zippy]

If it's an AC induction motor, lowering the voltage will only make it draw more current until it stalls - or burns out.

[jaysg]

hmm...since a Leslie is two speed, that kind of infers two coils or one long one with a tap.

[selloutrr]

yes just basic fast slow it's a toggle switch between a two speed motor on some models other models have multiple motors for both the speaker and the horn.

maybe this will help?

http://www.dairiki.org/HammondWiki/Lesl ... eedControl

http://btproductions.com/Gear/Leslies/D ... 20kit.html

http://www.scribd.com/doc/53742028/Leslie-Speed-Control



Have you thought about the motor from a ceiling fan?

[selloutrr]

You may also be able to make it adjustable by bleeding DC voltage onto the motors coil. This would act as a brake allowing you to variably slow down the motor.

The ceiling fan might be cool it would give you an off - hi - mid - low and some models offer reverse. a switch that slips the AC polarity inside the motor housing. A feature you could easily add to any motor.

[passfan]

I have been squirrling away the parts to build one of these and had the thought of using a fan speed control. I'll keep an eye on this to get some insight , thanks.

[Reeltarded]

Umm.. it's a 2 speed motor? Just do it the way it's done. A one button switch, and a relay? So simple, even a caveman could do it.. as long as he isn't a moron.

Me? I couldn't do it.

[selloutrr]

most models used seperate motors both motors idiol at all times until enguaged by a relay triggered by the toggle.