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Unread 07-01-2016, 22:51
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Re: paper: Apalrd's Choo-Choo Analysis Spreadsheet

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Originally Posted by apalrd View Post
This is true. However, the 'null sector' would actually be a slight reversing of direction and the total pull in distance would be reduced (it would pull in the mechanism a bit too far, let it out a little, then let it go).
Does this mean that the "cocked" position could require exactly zero force to maintain (though it would be metastable, at the "top of the hill")? If so, I like it even better.
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Unread 07-01-2016, 23:12
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Re: paper: Apalrd's Choo-Choo Analysis Spreadsheet

The Choo Choo is a favorite mechanism of mine, Dillon Carey and myself have a fancy version of a Choo Choo sheet with graphs and a rewind time calculator as well. (He did most of the work)

The first rendition of this mechanism I used in FRC was 2008 on 1625, with a fisher price motor in a Nothing but Dewalts setup for anti-backdrive.
Second implementation was 2010 for the kicker, same deal.

Then when 2014 rolled around and Build Blitz was happening....yup
Also Versaplanetary and a ratcheting wrench? way easier than dewalts.

Killer Bees were just the first people I've seen actual math from.

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