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Thread: m3 expression pedal input question

  1. #1
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    m3 expression pedal input question

    I like to use the input on the m3's exp pedal as a quick way to run a guitar/whatever into my leslie 147.. My question: is it ok to just flick on the run switch so I can have power and rock out through the leslie? I always start up the organ, but sometimes I just wanna plug in whatever real quick and not go through the trouble of starting it. I should also say that my start motor has a broken mounting bolt which means I have to literally wedge a pack of smokes in there to push the pin forward so the start motor engages, then start it, then take the pack of smokes out, then smoke one, then play the organ. So its a bit of a pain for now. But until I fix that, will I burn out the run motor by letting it run without starting the whole tg?

    BTW this forum is pretty awesome, stay gold.

  2. #2
    Senior Member TheAdmiral's Avatar
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    Just to be sure why don't you put a switch on just the run motor wire so you can cut it out of the circuit?
    Hammonds: A; AB; B3; D; E; 6-M3's; 2-A100; T582C.
    Leslies: 3-31H; 21H, 22H, 4-44W; 46W; 25; 47; 45; 125; 50C; 51; 55C; 2-120; 122; 122A; 145; 147; 245; 770; 825; 2-102; 2-103; 300.
    Wicks 2/5 pipe organ; Yamaha upright; Kurzweil Micro Piano & Micro B with M-Audio Oxygen 61; Yamaha DGX520; Wurlitzer 4100 (it came with a Leslie!). Peavey KB100 keyboard amp. Peavey Bass Guitar. Yes, I have A. D. (acquisition disorder) and don't want it cured.

  3. #3
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    That's a good idea, but with all that extra work I guess I could just fix the start motor, then it wouldn't be a big deal, except it's a little noisy... Does anyone know for sure if this will or won't hurt my organ?

  4. #4
    Senior Member Orgrinder010's Avatar
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    I remember reading in either the service bulletin or repair manual that when using the organ as an amplifier for phonograph or microphone, you can just power the amp through the run switch without starting the generator. The only reason I remember, is because I had the same question in the past, heh.

    I wouldn't worry about hurting the run motor. Think of it this way: all of Hammond's clocks used the same basic motor design as their synchronous organ motors. When the power flickered, they would be motionless for sometimes days at a time with power to the windings. But a simple spin-to-start would get them running again, no problem.
    Last edited by Orgrinder010; 02-23-2011 at 03:56 AM.
    ~1936 Hammond AV - Leslie 122 & PR40~~1954 Wurlitzer ElectroStatic 4602 - Leslie 125~

  5. #5
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    Hey thanks, that makes sense... I hope you're right, someone else told me I 'could' ruin the motor. I think your answer makes more sense, especially because these motors are brushless they probably have less parts that can burn out, am I right? What kind of motors are in Hammond clocks? Seems like they would be much smaller so would that make them less susceptible to burning up from heat generated by running without being able to move..

  6. #6
    if you ever want to replace that bolt,, just let me know,, I have plenty of them,, no charge,, let me know,,

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