Coupler to thrust bearing spacing

[BHChieftain]

Hi,
Coming off the motor shaft-- should there be any spacing gap between the coupler and thrust bearing, or should these be touching?
-Chief

[Jesse J]

paper thin.

you want the thrust bearing to work whenstabout its thrust upon, but not keep the shaft in tension, i.e., don't pull on the shaft to remove all slop before tightening coupler.

[BHChieftain]

You da man.

-Chief

[sundog]

But if you don't pull out some of the slack, how do you know the thrust is all on the thrust bearing instead of the motor bearings? Or do they share the duty?

[Jeff Wohlt]

Yep...I use 2 pieces of paper. If it actually touches it can create problems

[sundog]

So Jeff, if you don't have the thrust controlled at the strut (with a bearing or teflon washer), you should have a thrust bearing at the motor to take lateral torque off the forward motor bearing, which isn't designed for that.

If at the motor, you will take up the slack (except for 2 paper thickness spacing) and the coupler will ride on the bearing? And are you working on my wire drive as you type this? LOL

[Jeff Wohlt]

The small slack is only meant for not running on the motor constantly...we know it does but with no slack and IF everything is not perfectly flat and true then that can be a problem.

What wire drive Who are you??? Arkansas? I don't ship there. LOL Yes, Dave it will go out on Sat. Still wondering why that was bent. You have to stop using such a big hammer.

[BHChieftain]

The small slack is only meant for not running on the motor constantly...we know it does but with no slack and IF everything is not perfectly flat and true then that can be a problem.

This could be the source of my overheating rotor...
Thanks for the tips, I'll do more test runs this weekend!
-Chief