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Unread 12-09-2004, 13:12
Sean Schuff's Avatar
Sean Schuff Sean Schuff is offline
Year 18 in FRC!
FRC #0093 (N.E.W. Apple Corps)
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Join Date: May 2003
Rookie Year: 2000
Location: Appleton, Wisconsin
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Re: pic: 6 speed?? Great in theory - lets see how it works!

Quote:
Originally Posted by Tristan Lall
By the way, for a 6- or even a 4-speed version to work well (it seems to me, anyway) that you'd need to be able to shift on the fly, even while pushing something, or crashing at high speed into something. (Because the chances will be higher that you'll be in the wrong gear for something, as you're doing it.) I think you've addressed that, but just in case it wasn't a priority--please make it one! Part of that involves using sufficiently robust gears, since a partially engaged gear does not evenly apply its load to the entire face width!
The design intent is shift-on-the-fly capability. How well it works will remain to be seen. We plan on auto shifting - requiring a driver to also manage which gear he/she is in is not something we want to do.

We would like our shifting mechanism to be fast AND accurate enough to engage the vast majoirty of the gear even in the heat of battle. Double-edged sword whether to go with wider or narrower gears. Wider gears mean more strength but also mean more travel to fully engage and more weight. Narrower gears are lighter and quicker to engage but may not have the necessary strength. Time to add some math to the design mix.

Sean
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