echristley(at)att.net
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 Posted: Sun Feb 14, 2021 4:25 pm Post subject: A 3 phase AC (Alternating Current) question |
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Plan D: If you want to keep it really simple. I just switched my mill to use an old treadmill motor. It required some machining to make thing fit up, but two treadmill motors could use the same controller with a DPDT switch. Another DPDT before that one could also give you reverse (but, you'll want to pin the flywheel if you do that). I've got a video up showing what I did.
https://rumble.com/vdm28n-powering-a-rong-fu-mill-with-a-treadmill-motor.html?mref=fui8j&mc=c5hbl
On Sunday, February 14, 2021, 05:20:29 PM EST, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com> wrote:
At 04:03 PM 2/14/2021, you wrote:
| Quote: | --> AeroElectric-List message posted by: "donjohnston" <don(at)velocity-xl.com>
> How often do you switch? Perhaps a simple
> drop-cord off each motor with a twist-lock
> plug could be used to mate the in-service
> motor with its power source.
Unfortunately, often enough that I'd rather not be swapping cables. That's just as bad as having to move the belts to change speeds. |
Plan C:
Use two of these puppies https://tinyurl.com/y2dya9lc
to effect your 2PDT switching. Only one contactor
energized at a time.
Then you can switch between motors with an itty-bitty
toggle switch located remotely from the high-voltage-fat-
wires.
You'll also need a 24vac source to power the
contactor coils
https://tinyurl.com/yytcqyuy
Bob . . .
Un impeachable logic: George Carlin asked, "If black boxes
survive crashes, why don't they make the whole airplane
out of that stuff?"
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