[R-390] Oldham Coupler Maintenance

rbethman rbethman at comcast.net
Mon Oct 29 10:18:49 EST 2007


Roger - NO APOLOGY NECESSARY!!!

You were RIGHT!

I took HIS "words" - tried to understand WHAT he meant.

I've worked with gear systems for "ages".

Bob - N0DGN

Flowertime01 at wmconnect.com wrote:
> Fellows,
>
> If you stretch the spring on the oldham coupler while spinning the KC knob 
> and thus change the relation of the rotation angle between the KC knob and cam 
> shafts to the VFO position shaft then you have back lash.
>
> Too much friction causes the lash problem and maintenance fixes the lash 
> problem.
> Sorry to make this look like a binding problem.
>
> Sorry the fix to a lash problem is cleaning and lubrication.
>
> Read Tim's tales of the stuff he has encountered.
>
> Backlash in gear trains is also a friction problem.
> It the gears have low friction then they are just sloppy and have play but 
> not suffering from back lash.
>
> Roger.
>    </HTML>
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