[R-390] Tightening shaft connection?

[Tom M.]

Dan,

I found the shaft to me exactly the right size on mine.

It's hard for me to appreciate the difference by email, but perhaps you could
fashion a piece of thin copper plate (strip) to wrap around the shaft, and then
make it the right length to allow the 390A coupler to fit.  

Or maybe get a shaft from a 390 or from a different radio?? 

I have a spare shaft assembly from a 390A panel in my junque that you could get
rought with.  If you'd like to try it let me know.

Tom


--- Dan Merz <djmerz@3-cities.com> wrote:
> Hi,  is there a good trick to tighten the bandwidth shaft coupler if the
> shaft coming out of the i.f. chassis seems a bit small.  The shaft
> coupler worked ok on the 390a i.f. chassis but when I put the 390 i.f.
> chassis in the 390a  radio, the shaft seems a bit small for the coupler
> even when tightened down pretty tight (gap closed).  More to come on
> the  successful conversion of the 390 non-a i.f. to go in the 390a,  but
> I'm trying to solve this problem so I can change bandwidth without
> taking the i.f. chassis out - it seems awkward to have to do that.  I
> tried putting a 2 mil shim sheet on two sides of the shaft in but that
> still didn't give enough purchase on the shaft.  Maybe there's a gritty
> substance that would help?    thanks,  Dan.
> 
> 
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