[ARC5] Parts needed for ARC-5/274-N - splines...

[Kenneth G. Gordon]

For LOCAL control applications for our favorite receivers, I have found that 
1/4" hard-BRASS tubing makes extremely good spline-connectors.

I cut a piece about 7/8" long, and then cut two slots, about 1/4" long in the 
end that will go over the spline using a thin cut-off wheel in my Dremel tool.

Then I install a good knob with a brass insert on the other end, and tap the 
combo onto the spline with a ball-pein hammer. I get the knobs from Radio 
Shack.

Since the spline is almost exactly 1/4" in diameter, the 1/4" diameter brass 
tubing must expand a little to fit over it. Since the hard-brass is quite 
"springy", it grips tightly and doesn't work loose over time.

Once centered up, this makes an extremely reliable, tight, and completely 
back-lash free connection.

These work much better than the original, miliary tuning-keys or the military 
tuning knobs, which both exhibit noticeable and very annoying backlash.

Ken W7EKB