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Unread 18-12-2003, 21:28
Unsung FIRST Hero
Al Skierkiewicz Al Skierkiewicz is offline
Broadcast Eng/Chief Robot Inspector
AKA: Big Al WFFA 2005
FRC #0111 (WildStang)
Team Role: Engineer
 
Join Date: Jun 2001
Rookie Year: 1996
Location: Wheeling, IL
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Re: Engaging Gears Perpendicular to Shaft Direction?

There is no reason why this type of shifter wouldn't work(referring to the original drawing). There are a few problems to overcome so it comes down to a matter of pros and cons. The cons being the majority here, lets just list those. The transmission is not very compact, requires precise engagement of the teeth at speed or load, requires firm! locking of the driven shaft in place to constantly mesh with the driving shaft, requires a more complex and weighty shifting mechanism and if any of the above fails or is intermittant, the result is catastrophic. The result is many teams use an alternative that minimizes the cons and maximizes the pros. The last robot standing is not necessarily the better robot, just the last one standing.
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Good Luck All. Learn something new, everyday!
Al
WB9UVJ
www.wildstang.org
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Storming the Tower since 1996.

Last edited by Al Skierkiewicz : 18-12-2003 at 21:31.