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Unread 14-07-2010, 03:22
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AKA: Rahil Mehta
FRC #0668 (The Apes of Wrath)
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Join Date: Oct 2009
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Re: Pole Lifter - Winch

Quote:
Originally Posted by nick_sheets View Post
Thanks for all the quick responses.

We were just stuck on the math. It was just hard coming up with ratios. Thank you for all your help.

@rahilm: highly curious, what overall reduction did you guys go with?

Nick
We use a PTO system, meaning we're using all 4 of our drivetrain CIMs to power the hanger. The overall reduction we went with is 400:1, which includes the drive transmissions, and additional gearbox joining both sides of the drive, and then a final reduction through chain. We're looking at a lift time of ~2 seconds.

I think I should mention that our hanging system is closer to 254 than 1114 in design in that we are using a chain drive hooked up to the arm doing the lifting, instead of using a winch like 1114 does.
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