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Unread 22-03-2005, 22:34
sanddrag sanddrag is offline
On to my 16th year in FRC
FRC #0696 (Circuit Breakers)
Team Role: Teacher
 
Join Date: Jul 2002
Rookie Year: 2002
Location: Glendale, CA
Posts: 8,513
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Re: No CIM Motor in 2006?

Quote:
Originally Posted by Validius
Personally, i love the FP's They are great for just about everything. I would like to see 12 volt FPs though. 6 volts just isn't enough.
We run our 6V FPs at a full 12V and have not yet had a problem (not even warm) because we use each in conjunction with two FPs. The 6V motors work just fine for us. But that's not really the point I'm going to make here.

The thing with the FPs though about being "great for just about everything" is that they aren't. The gearbox that comes with them is all plastic. While this may be good for weight, it isn't for durability. So, lets talk just about the motor. The motor packs a lot of punch in a very small size. This leads to the problem of overheating (when not used like we used them). Also, it spins at a very fast ~20,000 rpm. This requires another stage of reduction compared to match the Chiaphua. Also, the FP is fairly small and fragile. The shaft is only 1/8" where the Chia is over 5/16" Also, the power tabs bend and break off. Also, the internal fan blades are very fragile and they break off. Also, the motor can is not fully sealed so debris can fall inside.

Also, I don't think two FPs would be adequately capable of driving a robot where 2 Chias would.

Aside from weight and size, I cannot see any advantages to the FP over the Chia.

The Chia is a hefty industrial motor that serves us well. I hope it is here to stay.
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Teacher/Engineer/Machinist - Team 696 Circuit Breakers, 2011 - Present
Mentor/Engineer/Machinist, Team 968 RAWC, 2007-2010
Technical Mentor, Team 696 Circuit Breakers, 2005-2007
Student Mechanical Leader and Driver, Team 696 Circuit Breakers, 2002-2004
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