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Originally Posted by dez250
You are not allowed to alter the integral parts of a motor, or alter it physically this includes internal operational gears. Also i would recommend you not to remove the worm gear at all even just to look at it, by doing so you will alter the setup for the magnetic field and reduce the output of the motor.
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To summarize rule <R31>, the only gearboxes you are allowed to modify/remove are the globe motor gearboxes and the FP gearboxes. You are not allowed to modify the gearing of the van door motor (or window motor for that matter). You are allowed to modify the output shaft. You are allowed to open the gearbox for the purposes of removing the output shaft to modify it.
Also, the worm gear is attached to the output shaft of the motor (note the difference in the context of this post between the output of the motor and that of the gearbox. Normally when referring to the output of the van door motor i would mean the output of the gearbox). Removing the worm would not effect the internal electronics or magnetics of the motor. Removing the armature of the motor can/often does have a negative effect on motor power. But, as long as you do not remove the armature, your fine from an electrical standpoint. I am not certain, but I am fairly sure that the gearbox can be removed from the van door motor with out removing the front of the motor, so that the gearbox is not integral to the operation of the motor, but put on after the motor is manufactured. But, since FIRST considers the gearbox integral to the motor, you are not allowed to modify the gearbox and shouldn't have to worry about removing the worm anyways.
Was that convoluted enough for everyone? I hope I made sense.
It also just occurred to me. In previous years, there was a rumor that the van door motors had their own thermal breaker built in. No one could confirm this, but there were stories of the motor cutting out when being tested with nothing but jumper cables between it and the battery. Anyone have any ideas?
*edit : Upon closer inspection, a few things hit me in the head. The gearbox and motor on a van door motor _are_ effectivly intergral. Chalk that one up to me posting way to late. The gearcase seems to act as the front of the motor can. It is possible to open up the gearcase with out removing the armature from the magnet can, with the intention of removing the output shaft. I couldn't give an exact guide for doing so. Also, there seem to be a couple diffrent versions of the van door motor out there. They seem to differ greatly in speed, and there are at least 2 diffrent worms out there.
-Andy A.