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 An RF generator design and build with valves.
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 Return to top of page · Post #: 16 · Written at 8:49:37 PM on 28 August 2022.
Fred Lever's Gravatar
 Fred Lever
 Location: Toongabbie, NSW
 Member since 19 November 2015
 Member #: 1828
 Postcount: 1313

Ian, I had a 500pf "butterfly" gang with bronze bushes that would be inherently balanced and quiet running.
Damm thing is somewhere in the shed, but I cant find it!
I saw it last year during a clean up and put it "somewhere".

I will try a twin in line 700 pf gang. It has rough ball bearings in cages but worse, will be a vibration problem.
I'll give it a shot any way.
If I cant find the butterfly, and the inline does work electrically, I may have to fit it out with sealed ball races and a counterweight on the coupling to part balance it.
I have gone for the direct drive option so there is little end thrust except for out of balance forces and the motor can handle that.
The gearbox option or a belt drive are also possibilities but complicated.

Yes, this is barking mad stuff but hey someone has got to try it!!!!!!!!
Make a good article for SC in the vintage section.

Fred.
 
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