Has anyone found a resolution to this problem yet? I posted this just now:
Quote:
ID: 1624 Section: 5.4 Status: Unanswered Date Posted: 2/13/2005
Q: Our van door motor, labeled "bad" has a serial number of 16640238, while the motor spec'd in the FIRST spec sheets is 16638628(appears to be last year's). Our motor has an RPM only max of 52rpm, spec is 76rpm, what do we do??
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Since it seems like all the other questions asked by other teams on this issue were deleted, I figured I would try again.
As the question states, we are seeing the same thing mentioned in this thread. Our van door motor has a different serial number than the specification document on the FIRST 2005 motor spec:
http://www2.usfirst.org/2005comp/Specs/Taigene_PSD.pdf
We have checked all of our wiring, and even run straight from 12.8V, and the motor will only spin a maximum of 52RPM!!! We had planned and designed around the specification of 76RPM, but now our lift is way too slow!!
We got frustrated and went to try last year's motor (bought from the FIRST garage sale). When we plugged that motor in it sparked like crazy. So we opened it up. The motor we bought had a cracked magnet!! So we went to switch the casing with the new motor so we could test the old motor, and decided to open them up. What we found disturbed us:
http://www.penfieldrobotics.com/test/doormotors.jpg
The one on the right is this years motor, the one on the left is last year's motor. While it is possible they made a drastic change in the gearing as seen to account for the motor, the gearing in the boxes seems to match our 52rpm/76rpm issue. And it just seems funny that the motor was labeled "bad" when we got it.
Does anyone know if last year's motor is legal?? It would seem so since that is what the specification document references.
HELP!!