Steve,
I wonder if the "pistol' is bent on your PTO that drags. Can you see the tuning
knob out of center as you spin it.
I just did my C2 PTO at Xmas and am at 3 washers on it - I think it slips
sometimes lately though even with 3 washers as evident on the freq displayed.
My tuning knob does seem out of center slightly and I should have rolled the
pistol on a flat surface to check the run out on it when it was last rebuilt. I
will do this this winter.
I rebuilt my Delta 580 with just 2 washers and it was still much smoother than
my C2.
I am thinking its possible that additional washers could be needed to
compensate for a pistol that is not true and causing extra friction.
Somthing to think about or check.
Good luck,
Aaron / N9SKN
-------------- Original message --------------
From: Steve Hunt <steve@karinya.net>
> Over the past 12 months I've completed 3 PTO rebuilds on my Corsairs and
> remote VFO. In all cases I ended up putting 3 washers under the lugs of
> the rear plastic retaining cap to get the sort of "feel" I like. Despite
> that, one of the three is significantly "stiffer" than the other two -
> it's quite noticeable when all three are in front of you and you're
> swapping from one to the other.
>
> I have 2 questions:
> 1) Has anyone ever tried 4 washers each side? Is there enough thread
> length on the bolt to accommodate this? Does the drive begin to slip at
> this stage?
> 2) Has anyone tried to make the adjustment variable - for example by
> placing springs under the lugs, and adjusting the retaining screws for
> the required "feel"? Or do you think this arrangement would allow the
> cap to move laterally, or to tilt, and cause its own problems.
>
> It seems to me that 2) could also be useful if the drive begins to slip
> - you could simply tighten the back screws slightly :)
>
> Failing that, I guess I'll just have to select alternative thickness
> washers that do the job.
>
> 73,
> Steve G3TXQ
>
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