[R-390] Clutch!

[Barry]

For the new one, it is about 180 to 270 degress from the point at which I
can feel the disk first engage the posts to where the clutch is disengaged.
When it does disengage, the geartrain is immediately freed from the PTO; not
exactly so on the older (Motorola) one.

On the older one, it doesn't seem that much different, but when the clutch
disengages, it isn't quite fully disengaged until I rotate the KC knob a
bit.  It's as if something is sticking and it takes a slight bit of
rotational force to free it.  Once that happens, it rotates pretty freely.
I'm thinking it may have some sticky residue somewhere on the clutch disks
that still needs to come off.  I tried it oiled which did not work very well
at all.  The oil caused the plates to stick together big time.  It should be
dry at this point, but maybe some of the Mobil One got into it.  Either that
or there is something else sticking.

Thanks,

Barry - N4BUQ

----- Original Message -----
From: "G4GJL" <g4gjl at btopenworld.com>
To: "Barry" <N4BUQ at aol.com>; "R-390-List" <R-390 at mailman.qth.net>
Sent: Monday, May 16, 2005 8:22 AM
Subject: Re: [R-390] Clutch!


> Barry, et al.,
>
> How many degrees of rotation do you need to get satisfactory
disengagement?
>
> My 390As all seem to need 270 to 360 deg. My R391 needs a lot
> less....maybe90deg only.
> Is there a difference in the designs here? I have not had the 391 apart to
> look at the mechanism closely.
>
> Pete
> G4GJL
>
>
> ----- Original Message -----
> From: "Barry" <N4BUQ at aol.com>
> To: "R-390-List" <R-390 at mailman.qth.net>
> Sent: Sunday, May 15, 2005 4:47 AM
> Subject: [R-390] Clutch!
>
>
> > So, this is what it's like to have a clutch that works properly!  I
> > rebuilt
> > the clutch mechanisms in both my R309A's.  The Motorola has always been
> > sticky.  Disengage the clutch and the VeederRoot still moves a bit until
I
> > rock the KC knob a bit.  On the "new" one (Teledyne), disengage the
clutch
> > (and I can really tell that it disengages) and the VeederRoot counter
> > stays
> > very still and I can adjust zero very easily.
> >
> > So much fun...
> >
> > Barry - N4BUQ
> >
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>
>