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Unread 22-09-2004, 12:17
Pat Roche Pat Roche is offline
Mechanical Engineer
FRC #0134 (Team Discovery)
 
Join Date: Aug 2003
Rookie Year: 2000
Location: Pembroke, NH
Posts: 211
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Re: pic: 1305 Frame design with trannies

Quote:
Originally Posted by Hunter
They are a completely new trannsmission That I designed. Although I was definetly heavily influenced by Baker's design. It is designed to have Brecoflex tracks in the gap between the The 2x4s and the outsice plates, So the driveshaft out of the Trannies is designed to turn the back drive pulley for the tracks. The trannies are 2 speed with approxiamte speeds (70% of free speed) at 3.4 ft/sec and 9.5 ft/sec. Kinda slow compared to other designs but This is designed like a bulldozer.
Great design looks good and rugged. One quick tip, If your gonna use a track like brecoflex, which has alot of grip add in a center idler wheel which is larger than your drive wheel. It will aid in turning your machine. We used brecoflex this past year and without the larger idler our machine couldn't turn. This thread might also help you:
http://www.chiefdelphi.com/forums/sh...ghlight=tracks
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