pic: Sprocket mounting for window motor

[team222badbrad]

loading photo ...

[Wayne C.]

FYI-
A finding about the Nippon Denso Motors-

we used the ND motor as the axis of an articulated arm where the ND gear drives a larger gear in a simple gearbox. However we find that the housing of the axis of the motor is weak and tends to crack through the housing after a while.

We remedied the situation with a cleat and a little reinforcement of the shaft so it won't torque so much. Hopefully it will last well enough and after about a thousand trials over the past three days I think we are set.


WC

[Scott team 48]

nice job guys, any tips on getting the hole pattern right? we made a replacement for the plastic coupler out of aluminum and it took forever to get right. I would like to know if you have any tips for while we make extras during the "fix it" window. Thanks.

[team222badbrad]

Well since I'm up past 2:45am on the Tuesday morning before ship putting it in the box; I might as well help you out.

First you need a 5/32 drill bit and then you can just follow this drill pattern once the sprocket is centered in the mill.

You will probably need a lathe to bore the hole to the size that the hole is in the plastic coupler.

I do not remember what size it is.

You will also need to chamfer the edges of the holes because of the way the gears are shaped on the motor.

If yah need anything just let me know being that I made them.

Sorry for the not so good drawing; I guess I should also specify that my units are in inches too.