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Originally Posted by Starkler
Is that RA worm drive recoverable?
To see that lovely big RA drive gear rusting like that seems like a crime.
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Yes it is recoverable it's just a matter of running the worm to bed it into the gear.The gear is cast iron and the worm is steel so with some oil the oxide should polish off.The worm holder is stainless and the worm bearings are a press fit so there is no backlash.When I used to do astrophotography(hypered film) with it only needed a slight correction every five minutes or so.It should come up like new.
I dont know what the periodic error is like but its small.
I had to look twice to recognise it.Kens done a great job.I am pleased it has a new home.
Bert