[pure-silver] Re: old rollei over exposing
- From: "Gene Johnson" <genej2@xxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Fri, 18 Feb 2005 16:53:59 -0800
I've seen maybe 4 or 5 that had this problem of not cocking in the "out"
position. I've measured the stroke and found it to be "standard" compared
to working cameras. But the "feel" is definitely rough and I've found the
fit of the ring in the shutter body to be sloppy. Mostly wear on the
shutter body. The throw can be adjusted, but it's not really a fix in these
cases. The linkage is pretty good steel and I haven't seen much wear in it.
I gave up working on Rolleis. It's hard. Harry earns his money.
----- Original Message -----
From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Friday, February 18, 2005 12:18 PM
Subject: [pure-silver] Re: old rollei over exposing
>
> ----- Original Message -----
> From: "Gene Johnson" <genej2@xxxxxxx>
> To: <pure-silver@xxxxxxxxxxxxx>
> Sent: Friday, February 18, 2005 6:19 AM
> Subject: [pure-silver] Re: old rollei over exposing
>
>
> >I agree with Mr. Knoppow,
> >
> > Though both of the failed mainsprings I've actually seen
> > were broken as a
> > result of a crack started from a spot of surface
> > corrosion.
> >
> > I have seen several synchro-compurs on old Rolleiflex MX's
> > that were just
> > plain worn out. The first symptom is usually a failure to
> > cock the shutter
> > when the board is extended outward. The wear on all the
> > cocking mechanism
> > parts stacks up to the point where there isn't enough
> > travel left to quite
> > cock the shutter. Generally the shutter would still
> > function if you could
> > cock it manually, but even then it feels pretty rough
> > while the shutter is
> > being cocked. Theres a steel toothed ring that bears on
> > the aluminum
> > housing, and that's one of the main wear points. These
> > shutters are on
> > either heavily used cameras, or have a lot of dirt in
> > them.
> >
> There is an adjustment for the stroke of the shutter
> winding levers. Its a sliding cam under the wind crank which
> is on an eccentric with a lock screw. However, the the cam,
> or its follower, can become worn to the point where it won't
> completely cock the shutter in some focus positions. Its
> possible that shutter wear contributes but I think this is
> mainly a problem of wear of the cocking mechanism in the
> camera.
> The first symptoms I noticed were irregular winding and
> spacing of frames.
>
> ---
> Richard Knoppow
> Los Angeles, CA, USA
> dickburk@xxxxxxxxxxxxx
>
>
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