[Amps] 1/2" bore Control Knob

[Will Matney]

Chris,

Most mount those caps with a bracket behind the faceplate and use a 1/4" 
to 1/2" shaft extender through a shaft bushing. The shaft bushing is set 
through a round hole in the faceplate and held on the back side with a 
nut. Then the shaft extenders 1/4" male part goes through it. On its aft 
end is a female 1/2" hole to mate up with the cap. It simpley attaches 
to the 1/2" shaft with a set screw. this way standard 1/4" knobs will work.

Will



It's a Russian vacuum cap with a continuous .50" shaft. No collet.



-----Original Message-----
From: R. Measures [mailto:r at somis.org]
Sent: Tuesday, January 11, 2005 3:48 PM
To: Chris
Subject: Re: [Amps] 1/2" bore Control Knob

Is the shaft 0.5" or is there a 0.5" collet at the end of a 0.25"drive
shaft?

On Jan 11, 2005, at 12:11 PM, Chris wrote:

 > Any suggestions from the group on where I may find large control knobs
 > for vacuum variable with ½” shaft?
 >
 > Thanks for any suggestions,
 >
 > Chris
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 > Amps at contesting.com
 > http://lists.contesting.com/mailman/listinfo/amps
 >
 >

Richard L. Measures, AG6K, 805.386.3734. www.somis.org