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Unread 14-01-2006, 10:49
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Joe Johnson Joe Johnson is offline
Engineer at Medrobotics
AKA: Dr. Joe
FRC #0088 (TJ2)
Team Role: Engineer
 
Join Date: May 2001
Rookie Year: 1996
Location: Raynham, MA
Posts: 2,648
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Re: Attaching the Fisher Price

Quote:
Originally Posted by Andy A.
I would suggest that you utilize the provided gearboxes. They are, on a whole, pretty decent.
...
Yes and no. They are wonderful gearboxes... ...for driving a Barbie Car at 5mph.

In the many years since F-P donated them, we only used the transmision one year and that was with Bill Beatty's great advice to replace the last output gear with an aluminum subsitute gear (WM Berg sells one that is tolerably easy to modify to get into that gearbox, if memory servers).

But, I think it is much much better to use these motors in another gearbox. AndyMark.biz sells a nice little 4:1 gearbox. Banebots.com sell a whole series of gearboxes in a variety of ratios that can be easily fitted to a F-P motor in about 10minutes. You can also modify Dewalt XRP drills to use a F-P motor (look for a whitepaper called NBD by Joe P. -- very good work).

Callin' 'em as I sees 'em...

Joe J.
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