Re: {Collins} 70K-2 PTO



Some of the ARC-5 var caps have a Pyrex ball.  I do not know if the size is
correct, but they are bigger than 1/16.  There are a lot of those surplus
variables lying around due to the parting out of those sets long ago.

Dennis

On Thu, May 28, 2015 at 11:06 AM, bonddaleena--- via Collins <
collins@xxxxxxxxxxxxx> wrote:

> Hi to all. I'm stuck with problems on my 'new' 75S-3. The radio is like
> new, but had multiple PTO issues. I've had that thing apart so many times,
> I've lost count.
> It's packed up and ready to be sent to a resident 'expert' for a look see.
> I have searched the Reflector Archives and have found some excellent info.
> Thanks, Jim!!!
> One question I can't seem to find an answer to is this:
>
> What is the size of the ceramic (Pyrex, whatever material), single ball
> bearing used on the rear of the PTO shaft?
>
> I have seen older messages about some folks having a supply of spare
> (Sapphire ?) bearings. I think (oh no) they might be .062" (1/16").
> If I am not mistaken, Collins used a similar bearing at the very rear of
> the Pre-selector shaft. I lost that one, but it's been replaced with a
> small ss ball.
>
> Sorry to be so wordy, but it's kinda hard to describe.... ha ha
>
> thank you
> ron
> N4UE
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