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Unread 21-02-2016, 13:48
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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
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Re: Voltage Drop issues

Quote:
Originally Posted by mypie4050 View Post
<snip>


Potential Causes:
Pneumatic wheels don't have enough air
Braking feature of Victors eating up a ton of power
Victors being power hogs
Victors overheating
Faulty Wiring
Faulty Victors
Extreme friction caused by pneumatic wheels
<snip>
The Victors getting hot are much more likely the symptom than the cause.

How much rock do you have on the middle wheels? If you can't clearly see that the front tires are in the air when the robot rocks to the back and vice versa, I am going with extreme friction due to grippy wheels theory.

Also, JVN spreadsheet* says that you're top speed is 17.4fps (14.1fps adjusted). That's a little bit on the high side for a one speed transmission and these grippy wheels (imho). You'd probably have a much better day if you can get more ratio betwixt those CIMs and your 8" pneumatic wheels.

Good luck.

Joe J.

*honestly, checking a box saying that your team promises to use this spreadsheet ought to be required before AndyMark or Vex sells a gearbox and/or a especially grippy tires.
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