6 replies to this topic

[RobVG]

Just got an old scope for a project. It has an alt/az mount. It moves up and down okay but it's a little rough left and right. And it loosens with use but the nylock nut holding it isn't coming loose. It has a piece of nylon sheet for a bearing. 

 

Is there a fix for this?

[JamesMStephens]

You're teasing us, Rob!  What kind of scope?  Where's the picture?

 

Jim

[rodney j johnson jr]

you can't make an old man young again (at least, that's what i've heard, cough).

BUT, he can do workarounds/

 

keep trying. a solution will present itself (but you might need glasses).

[KTAZ]

Bearings, whether nylon, Teflon, or metal, can be replaced. Between that and a good clean and degrease, then re-grease, you should be in much better shape.

Edited by KTAZ, 01 April 2021 - 08:39 AM.

[RobVG]

Are thrust bearings ever used?

[KTAZ]

Absolutely. Thrust bearings are common in mounts.

[AstroKerr]

You may want to keep to the thrust washer - the nylok allows you to adjust the friction / brake effect and adjustable ease of Az rotation and isn't usually damaged by the compressive forces applied to that end. A proper thrust bearing would need a good cinch down to provide the same friction / brake effect and I would expect damages to the balls / rollers or raceways unless a different type of brake were used.

 

If there is room, replacing the nylok with a lock washer and a wingnut may make things easier in the future.