[ARC5] Bowden tuning cables problem

[Mike Hanz]

On 3/26/2013 4:49 AM, Richard Hankins wrote:
> I have just obtained some of those hard-to-find Bowden tuning cables 
> used on SCR-274, etc.   Having just tried several on a set and control 
> unit, I find they are unusable in their current form.
> The problem is that the inner is too long relative to the outer. I can 
> assemble one end just fine, and it all works as expected. But the 
> other end cannot be assembled because the locking ring doesn't get 
> anywhere near the collar on the set/control unit.
> I presume I have cables intended for some other application, where the 
> spline is buried much further into the equipment.
> Anyone know if its possible to modify these cables, and if so, how you 
> do it?   I hope it can be done, because they are otherwise in good 
> condition.

I wrote some notes on tuning cable fabrication at 
http://aafradio.org/garajmahal/flex_drive_cables.html that may be 
helpful, Richard.  The outer sheath does usually have a bit of slack to 
stretch or compress, but it sounds like you've extended yours as much as 
they can be stretched.  I've seen some of these cables with a vinyl 
outer sheath that restricts the outer casing compressibility - don't 
know if that describes yours.

          73,
  - Mike  KC4TOS