It’s near the end of 6 weeks and we’re still debating between the Van Door motor and the Nippon-Denso motor for our arm. What do you guys suggest? I looked at the specs (which are from 2004 and 2003) and apparently the Van Door motor has more torque, but when we tested out Nippon-Denso, it seemed to have enough torque. Are the specs correct?
And another thing on the Van Door motor - we found out that the shaft on that is 7/16ths inch…And I couldn’t find a 7/16ths sprocket anywhere in the NSC catalog. How did you guys solve this problem? Please help us.
Keep in mind that the Van door motor is backdriveable, the Nippon Denso window lift motor is not. This may make a difference to you (or not).
The Van door motor is a metric motor - use m6 bolts to mount it and the thread on the motor shaft is also m6. Check the shaft size using a metric caliper for a sprocket that would fit it.
Just another note on the Van Door Motor… The shaft itself is 11mm, which is close enough to 7/16" to work. We tried to find an 11mm drill bit locally, but could only find them through McMaster or similar sites. To mount a sprocket on the shaft, we used a 5/8" bore sprocket and made a spacer to fit between it and the shaft. We then drilled through all three and pinned them together. (5/32 dowel pin)
the van door motor is immensly more powerful than the window motor. we set up part of our arm today, the window motor could not even lift the 12 pound arm up, but the van door motor swung it around at a dangerous speed.
Does anyone know an effective method for combatting the van door motor’s backdriveability? As in, so it will suspend an arm with a tetra, requiring about 10ish Nm on the motor? The only good way we could think of was having it lift the arm along with the non-backdriveable window motor, but it is a nuisance getting them to run at the same speed. Any thoughts?
gearing it to the point that the motor at stall or idle will stop the arm works, but it will slow down the movement speed of you parts (arm i am guessing). it will give you More torque, but someone told me that an arm that takes more than 6 seconds to move from bottom to high enough to cap will only be able to cap 3 goals in a game (not sure on the math).