[R-390] large knobs/ setscrews
wb3fau55 at neo.rr.com
wb3fau55 at neo.rr.com
Mon Apr 8 10:19:56 EDT 2019
Folks, my intention is to simplify the MFG. As for the shaft, i think
it is 5/16? Putting a flat on the shaft would be easy. Only one flat
would be necessary and easy done with a file. does not have to be very
deep. Also keeping the band-change shaft and gears well lubed will
make a good running RF section. So, how much will these cost? A lot
of metal will be cut away. A thicker wall would be a lot less waste.
Is aluminium the cheapest metal for this? I think Grainger sells
roundstock. Maybe best price? For now i would stay with the large 390A
knobs and do other requests later as this proceeds. With the stock
knob, then you need the clamp, a whole different operation. 73 Russ.
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