[Elecraft] KPA100 Tightening the finals...

[Don Wilhelm]

The initial re-tightening seems to be all that is required.
I believe the thermal pads will slightly thinner after an initial period of
being exposed to the pressure from the initial tightening and that normal
'squeezing' process may be shortened by the thermal cycling.  I have not
been able to torque my KPA100 screws any significant amount after the first
re-tightening (the first time WAS significant).

If my theory is correct - anytime the thermal pads are replaced, one should
do the re-tightening just as on a new KPA100.

73,
Don W3FPR

Life is what happens when you are making other plans

> ----- Original Message ----- 
>
> I haven't noticed any looseness in mine since tightening them a few months
> after the initial build, and I did some testing of the "drift" mods that
had
> me cycling the K2 finals over and over again hard enough that the heat
sink
> was too hot to leave my hand on for any length of time.
>
> So I'd guess that you're fine, now that you've done the initial
> re-tightening.
>