The Workbench

Re: Beomaster 900 Tuning Drive Clutch.

Pentode — Thu, 20 Nov 2008 09:29:09 GMT

Thanks for that,

Yes, it is a complicated drive mechanism, I shall not strip it down until I have suitable replacement rubber material.

I, like you have thought of using rubber sheet, but I thought it was at least worth asking around in case someone has already found a simple 'replacement' - type solution first! The easy bit is always the electronics when refurbishing vintage equipment...

If I have to, I could possibly slice through a suitable sized pinch-roller, on the lathe - but that's not easy with thin sections.

Thanks again,

David.

Re: Beomaster 900 Tuning Drive Clutch.

tournedos — Thu, 20 Nov 2008 08:24:35 GMT

I also have one of these where the clutch doesn't quite work right - I managed to adjust it so that both FM and AM work, but in FM the AM scale is dragged along in some parts of the dial (or vice versa, can't remember).

I was planning to simply buy some rubber sheet of about the right thickness, and cut the rings out of it. Disassembly seems such a complicated job, though, that I haven't gotten around to it - I never use the AM scales anyway...

In some other applications, I have managed to resoften some rubber parts by soaking them in vegetable oil, but in this case it might just make the friction surfaces more slippery.

Beomaster 900 Tuning Drive Clutch.

Pentode — Thu, 20 Nov 2008 08:01:35 GMT

Having just repaired & completely refurbished a vintage Beomaster 900, I am left with one last problem.

The dual-drive tuning clutch slips, due to the rubber tyres having gone hard.

Does anyone know where I can obtain either a good clutch assembly, or of a source for suitable replacement tyres?