[Central-Electronics] 100V/200V tuning knobs

[Donald Ball]

Hi all,

Is it ok to list a link to a Craigs List ad I put up this morning regarding
the CE gear I am looking to sell?

Don
KE1MB

On Thu, Feb 15, 2018 at 12:10 PM, George Maier <GeorgeW1LSB at verizon.net>
wrote:

> You are correct on the torque Don, I've been down that road numerous times
> and found the same correlation.  It seems that finger tight, or somewhere
> close to that,  works about right
>
> 73, George - W1LSB
>
> -----Original Message-----
> From: central-electronics-bounces at mailman.qth.net
> [mailto:central-electronics-bounces at mailman.qth.net] On Behalf Of Donald
> Ball
> Sent: Thursday, February 15, 2018 11:54 AM
> To: Robert Sauvan
> Cc: central-electronics at mailman.qth.net
> Subject: Re: [Central-Electronics] 100V/200V tuning knobs
>
> I am not sure if mine were exactly the same as I have no way of measuring
> that. It seemed to be one of those things that you just "tweak" . I did
> notice that it seems best when you loosen the screws just so that the dial
> begins to slip, and then bring them in just enough to allow it to grab
> throughout the band spread. I noticed that if they were too tight, that it
> seemed to make the PTO jumpy.
>
>
> Don
> KE1MB
>
> On Thu, Feb 15, 2018 at 11:32 AM, <rsauvan at beyondbb.com> wrote:
>
> > Good idea. I will try that technique. Sounds like the best way to get
> > it right. I know for sure all 3 screws will need to be tightened the
> same.
> >
> >
> > Thanks-Bob
> >
> >
> >
> > On 2018-02-15 09:02, Donald Ball wrote:
> >
> > Hi,
> >
> > I found that there is a torque value for those three screws that will
> > allow the PTO to spin freely without any heavy grease and just light
> > oil. I cannot tell you what that value is, but it is not that tight
> > from what I remember. I had to use an extension shaft and a small
> > knob, spinning the PTO while fine tuning those screws. You don't want
> > it too tight because it seems to make zero beating difficult. Once you
> > have it the rig performs very well and is not stressful at all to bring
> on
> freq.
> >
> > Don
> > KE1MB
> >
> > On Thu, Feb 15, 2018 at 10:35 AM, <rsauvan at beyondbb.com> wrote:
> >
> >> Thanks Don,
> >>
> >> I contacted Bob Sullivan and he confirmed for me that I did in fact
> >> have my assembly correct. After it is completely together and back in
> >> the radio with the knob, it should turn nicely. But, until I put it
> >> back in the radio, it does feel very stiff. I did put it together
> >> with some Lithium grease and yes it does make it easier to keep all of
> the bearing intact.
> >> Now, Im onto the PTO rebuild which is almost complete.
> >>
> >>
> >> Thanks-Bob-W0YBS
> >>
> >>
> >>
> >> On 2018-02-15 06:45, Donald Ball wrote:
> >>
> >> Hi, I did this and there is a trick to it. I had to use a long spare
> >> shaft to hold the parts together while doing this. You will want to
> >> do this in a large bowl as it will come apart and bearings will fall
> >> out constantly. I also recommend some grease as it will help hold
> >> bearings in place.
> >>
> >> Don
> >> KE1MB
> >>
> >> On Wed, Feb 14, 2018 at 9:18 PM, Robert Sauvan <rsauvan at beyondbb.com>
> >> wrote:
> >>
> >>> Hi all,
> >>>
> >>> I am in the process of refurbishing a 100V along with the PTO. While
> >>> waiting for my new bearings to arrive for the PTO, I  needed to take
> >>> the tuning knob assembly apart. I cleaned it all up and greased the
> >>> bearings and have tried to put it back together. Im sure I have it
> >>> assembled correctly but am having issues getting the spring steel
> >>> plate screwed back on. So, of course Im doubting whether I am
> >>> putting it back together correctly. Instead of getting into details
> >>> as they would be too lengthy for an email, Im wondering if anyone
> >>> has a schematic of the assembly of this unit, has done one and can
> >>> give me pointers, or possibly send pictures of one you have done as a
> guide? Anything would be helpful.
> >>>
> >>>
> >>> Thanks-Bob-W0YBS
> >>>
> >>> --
> >>> Thanks
> >>> Bob Sauvan-W0YBS
> >>> rsauvan at beyondbb.com
> >>> http://w0ybs.com
> >>>
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> >>
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