[Joe Johnson]

Since these motors are actually used on Delphi Power Sliding Door applications and I work in the Advanced Development Group for the group that designs power sliding doors, I have some knowledge of this motor.

Raul's concern about cold is probably not an issue. We test down to -40 C with no problems.

I think your real problems will come if you are impact loading the teeth. In this case, you can bend the teeth pretty quickly.

So, if you are driving a long rigid arm and expect the arm to take a lot of hard wacks in directions that will give impact loads to drivetrain you are asking for trouble. Another way to give impact loads to the gear teeth is to run into a hard stop at high speeds (stalling the motor against a hard stop should not be a problem).

I have first hand knowledge of this failure mode. We used the power sliding door motor with great success over the years. BUT, one year we used it to lift ourselves on the puck. The mechanism was such that the drive link went over center at the bottom of travel so that we could stay up when power was removed. At the end of travel we had a hard stop. Basically every time we lifted ourselves, we ran the motor at full speed into a hard stop. We were eliminated from the competition due to failure of that gear. Tests after the Championships showed us that we could fail that gear in only a handful of lifts.

Keep this in mind and you will probably have no troubles.

Good Luck.

Joe J.