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

[Richard Knoppow]

----- Original Message -----
From: "Brock Nanson" <brock@nanson.org>
To: <largeformat@f32.net>
Sent: Monday, January 13, 2003 9:20 AM
Subject: Re: [LargeFormat] Compur 00 (was Crown Graphic
Movements(or lack of) ?)


> 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:
>
  Its possible the speed cam has slipped or that one of the
little levers that's supposed to rid in its surfaces has
gotten pushed under it.
  You can try to fix this yourself. The procedure is:
  Find a box to work in to catch any parts which drop off
and have something like a saucer to hold the parts.
Remove the small screw. You can stick it to a bit of scotch
tape or masking tape to make it easier to find.
  After removing the screw unscrew the flange. You will see
a ring of holes under it for setting it at any tightness.
Once off you can rotate the speed ring carefully and watch
the little levers and the slots they are supposed to ride
in. If the speed ring and the cam which is in contact with
it pulled up enough one of these levers may be caught under
it.
  Its also possible a small lever may have ridden up over
something else in the shutter. This is easy to fix _if_ you
know what it should look like, otherwise it may be difficult
to spot.
  If you get the thing running by the above carefully fit
the flange back and tighten it until the speed detent is
reasonably definite and there is a minimum of vertical play
in the ring. There will always be a little play as will be
obvious from the construction. Find the nearest combination
of slot in the flange and screw hole in the shutter body and
replace the set screw. You can lock it with a drop of nail
polish if you like but I don't think its really necessary.
  Shutter repair people seem to hate the #00 for some
reason, maybe because its small. However, its a perfectly
reliable shutter, the same as used in Rolleiflex cameras.
Probably the difference is that in a Rollei its protected by
the camera's body.
  If this doesn't work then a trip to Steve Grimes or some
other good shutter person is in order.

---
Richard Knoppow
Los Angeles, CA, USA
dickburk@ix.netcom.com