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Unread 17-02-2010, 02:42
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Tom Line Tom Line is offline
Raptors can't turn doorknobs.
FRC #1718 (The Fighting Pi)
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Location: Armada, Michigan
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Re: Robot refuses to turn!

Something is wrong.

A 24inch wide 12.5 inch long wheelbase with two cims on each side geared at 24:1 (the low gear on the supershifter ratio) should be able to turn. I'm taking this dimension from your test where you removed both front wheels.

You say you're directly powering the cims on both sides from the battery, with no breakers involved.

You say you've taken a battery with 12.5 volts. That is not a charged battery. A fully charged battery will usually read between 12.8 and 13.1 Volts. A 3/4 discharged battery can still read 12.5 until it is under load, then it can drop to 7 and 8 volts.

#1 Confirm that the battery is fully charged.
#2 Confirm to us that you are running on regulation carpet WITH NO PADDING under it. Carpet with padding is death to turning.

Edit: Can you please confirm that you're running dual cims on each side, and not singles?