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Unread 09-02-2014, 11:31
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Jibri Wright Jibri Wright is offline
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FRC #1781 (Electric Eagles)
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Re: Ratchet Switch under load

Quote:
Originally Posted by Monochron View Post
Ah, I see where I misunderstanding the other designs now, it is as Ether said.

We were trying to be clever and remove the need for shifting into a neutral gear back attaching the ratchet to the motor shaft and using a worm drive in our winch. That way the ratchet would wind up the winch and the worm drive would give us our hard stop. Then to fire we only have to switch the ratchet's clutch and it would easily unwind.

Unless we can find a ratchet that is very easy to actuate under load though . . . then it looks like we will need a transmission.
Unfortunately all the Vex and AM transmissions are out of stock right now!
Hopefully we can find something similar soon.
I think you are still misunderstanding. If you have the ratchet on the axel directly driven by the CIMs, there's no need to switch the ratchet's clutch. When the dog gear disengages, the output shaft will spin freely regardless of the ratchet or not. This is because the output shaft is driven directly from the shaft with the dog gear, not the shaft driven directly by the CIMs.
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