A
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On a recently acquired polar mount for a Prodelin dish, I have discovered Nylon-like bushings (or bearings, if you like). They are on the main pivot axis of the polar movement.
See attached pictures.
Question 1: Can/should I do anything to recondition / lubricate these?
The original config is a separate bolt in each of the bearings (roughly , but only just so, aligned on the axis of swivel). I am considering stikcing a threaded bar through both, effectively giving an axis.
Question 2: Would the threading on the rod dig into the nylon compared to the flat surface part of the bolts that were there before? (and even then one end had a third of the bushing "threaded", while the lower ones had all of it.
The alternative would be to get a really long bolt, and use that instead of off-cut from threaded bar. Not sure it would be worth it though.
Any advice from you mechanical experts is much appreciated.
See attached pictures.
Question 1: Can/should I do anything to recondition / lubricate these?
The original config is a separate bolt in each of the bearings (roughly , but only just so, aligned on the axis of swivel). I am considering stikcing a threaded bar through both, effectively giving an axis.
Question 2: Would the threading on the rod dig into the nylon compared to the flat surface part of the bolts that were there before? (and even then one end had a third of the bushing "threaded", while the lower ones had all of it.
The alternative would be to get a really long bolt, and use that instead of off-cut from threaded bar. Not sure it would be worth it though.
Any advice from you mechanical experts is much appreciated.