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Radio Wrangler · 2nd Aug 2020, 1:19 pm

I'd use the original nylon piece, cleaned up, for its centre bearing (if it's OK) and turn up a ring to fit onto it. In the outer cylinder of the ring I'd turn a groove to take the O ring and maybe make it a little oversize to start with and keep turning it down a little until I arrived at the wanted diameter.

David, do you mean that the overall diameter (outside of the rubber) is 43mm, or do you mean the nylon bit is 43mm and the rubber stands 4mm above it?

David

2nd Aug 2020, 1:19 pm	#22
Radio Wrangler Moderator Join Date: Mar 2012 Location: Fife, Scotland, UK. Posts: 22,874	Re: Grundig TK141 advice I'd use the original nylon piece, cleaned up, for its centre bearing (if it's OK) and turn up a ring to fit onto it. In the outer cylinder of the ring I'd turn a groove to take the O ring and maybe make it a little oversize to start with and keep turning it down a little until I arrived at the wanted diameter. David, do you mean that the overall diameter (outside of the rubber) is 43mm, or do you mean the nylon bit is 43mm and the rubber stands 4mm above it? David __________________ Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done