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Unread 12-01-2006, 16:36
Unsung FIRST Hero
JVN JVN is offline
@JohnVNeun
AKA: John Vielkind-Neun
FRC #0148 (Robowranglers)
Team Role: Engineer
 
Join Date: May 2001
Rookie Year: 2000
Location: Greenville, Tx
Posts: 3,159
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Re: Need shifting transmission layouts/ideas

I couldn't pass up the challenge.

12:50
50:32 or 32:50
21:64

244% Reduction difference.
High Gear RPM approx 548 RPM
(assuming 81% speed loss from free speed.)
All gears available from Boston Gear, as standard parts.

On 229, we used a similar layout in 2004.

See attached for gearing calculations.

Inspired by:
http://team229.org/photo/single/2723
http://team229.org/photo/single/2744
http://team229.org/photo/single/2743
http://team229.org/photo/single/2829
Attached Files
File Type: xls Sanddrag.xls (46.0 KB, 25 views)
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In the interest of full disclosure: I work for VEX Robotics a subsidiary of Innovation First International (IFI) Crown Supplier & Proud Supporter of FIRST

Last edited by JVN : 12-01-2006 at 16:46.