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Unread 11-12-2013, 10:46
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: CIM Motors reusable?

Quote:
Originally Posted by jeremy callahan View Post
we also had some issues with the bag motor. they ran great at the beginning but at the end of the day you would have to resort to "kick starting" the wheel to get it up to speed. If we could figure out how to stop having to "kick start" it we would like to use them. But we just don't want to have to rely on that in the middle of competition. That's our opinion on them.
Hi jeremy callahan,
There was a documented manufacturing defect which affected some BAG motors. We at VEX/IFI worked very closely with FRC teams, our motor manufacturer, and FIRST to identify the problem and provide a retrofit to teams.

http://content.vexrobotics.com/vexpr...s_20130411.pdf

In addition, we've ensured that this problem will not happen moving forward. 100% of BAG motors in our warehouse have been retrofitted, and ALL of them were dyno tested in-house to ensure performance within 10% of our published spec. (It turns out, all of them were within 5%.)

If any team experiences a problem with a BAG motor, I hope they will immediately contact our customer support team by emailing prosupport@vex.com or calling 903.453.0802 We pride ourselves on our customer support, and want to "make things right" if you have an issue.

-John
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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