[R-390] R-392 Mech.Parts Question

[Paul H. Anderson]

On Fri, 25 Jan 2002, Barry Hauser wrote:

> Harry:
> 
> As Mike pointed out, that is an Oldham coupler -- excellent photo.
> 

I agree - that is a great shot!

It occurs to me that a trivial fix for that is to go to a hobby shop, get
a small length of square bar stock of appropriate dimension, cut to fit,
and put a rubber band around the thing (or tape or glue or wire wrap) to
hold the bar in.  The oldham coupler, as someone described, stays
inserted, and a bar wouldn't.  But a bar would get the job done a lot of
the time.  Another approach is to use two pieces of stock - a square piece
to lock the two couplers together, and a tubular piece to slip over the
joint - it would be held in place between the screws of the opposing
couplers.

I took his excellent picture and put some notes on it.  You can see it at:

<http://www.pdq.com/boatanchors/r-392/R-392-Bandwidth-Coupling.jpg>

I personally would favor that over epoxy or other glues that might gum
things up otherwise.

Paul