[LargeFormat] Compur 00 (was Crown Graphic Movements(or lack of) ?)

[Brock Nanson]

Hi Richard,

Yes the tiny screw is there, although it looks like someone has had a 
screwdriver on it in the past, if you know what I mean!  There are two 
other marks at third points that almost look like other holes, but they 
aren't.

The blade that's moved has moved enough that I can see a hole in the end 
that would normally be used to hold it (I assume).  The detents still 
work, but the B setting is now 1 second so either the whole thing has 
slipped or there is more going on here than first meets the eye.  I 
suspect pressure on the front cell did something costly... certainly it 
needs to be opened up to re-align the shutter blade back into position.  
If I loosen that small screw, am I in to the springs and complicated stuff 
straight away, or do I need to go a layer or two deeper?  Aaack, I suppose 
the right thing to do is send it down to Mr. Grimes before I really mess 
things up!

Brock

On Mon, 13 Jan 2003, Richard Knoppow wrote:

> 
> ----- Original Message -----
> From: "Brock Nanson" <brock@nanson.org>
> To: <largeformat@f32.net>
> Sent: Sunday, January 12, 2003 11:13 PM
> Subject: [LargeFormat] Compur 00 (was Crown Graphic
> Movements(or lack of) ?)
> 
> 
> > >   BTW, you will need a locking cable release if your SA
> is
> > > in the older Compur No.00 shutter, it has no T setting,
> only
> > > B. Only very early SA's came in these shutters.
> > >
> > > ---
> > > Richard Knoppow
> >
> > This is exactly right.  This is in fact the model I own.
> >
> > You must have jinxed me Richard ;-) , because I was
> unpacking my gear (this
> > very afternoon!) to give it the once-over after returning
> from Australia
> > when I noticed some movement in the shutter assembly.  The
> shutter speed
> > ring was flexing away from the shutter body at the bottom
> when the lens cell
> > was given a slight amount of pressure.  The lens was kept
> on the Super
> > Graphic board with the cells attached, wrapped in bubble
> wrap and stored in
> > the middle of a Lowe Pro bag, so at first I thought this
> might be a natural
> > movement I hadn't noticed before.  It wasn't.  I removed
> the front cell and
> > tripped the shutter once and now one of the blades is
> loose... :-(
> >
> > So, what do you guys think?  Should I send this to Steve
> Grimes (any guess
> > what sort of cost??) for repairs or look for a new (used)
> shutter or simply
> > flog the whole thing on eBay with the problem identified?
> I have a friend
> > with a Fujinon f8 90mm that he's thinking he'd let go for
> $300 US or so...
> >
> > The lack of a 'T' setting has always been a nuisance, but
> I've learned to
> > live with it.  I've never had a reason to have misgivings
> about this lens
> > optically or mechanically until now.  In spite of its age,
> I've never felt
> > the lack of multicoating was a problem.
> >
> > Brock
> >
>   The shutter is held together by a retaining ring around
> the lens mount. The ring is adjustable and is in turn kept
> from turning by a very small set screw. Take the front cell
> off the shutter and look to see of the set screw is missing.
> They are hard to find.  If its missing the ring can be
> tightened and locked down with a drop of Lok Tite at the
> edge. You can tighten it with you fingers.
>   I have the Compur repair manual but don't remember any
> spec for how tight the ring should be. I tighten them
> enough to give the detents on the speed ring a definite
> feel. The speed ring will have a very slight play even when
> adjusted right.
> 
> 
> ---
> Richard Knoppow
> Los Angeles, CA, USA
> dickburk@ix.netcom.com
> 
> 
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-- 
Brock Nanson
Kamloops BC Canada