[rollei_list] Re: Checking shutter speeds...Compur shutters reliability
- From: Carlos Manuel Freaza <cmfreaza@xxxxxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Fri, 16 Feb 2007 01:37:22 +0000 (GMT)
I'd like to add that __for collectors cameras__ in one
of the Rollei Technical Report last pages the auhor
recommends sewing-machine oil free of resin and acid
and Medical Vaseline to replace oils and grease
mentioned in the Rollei Repair Factory manual to
service the cameras, this recommendation does not
include the shutters according I wrote previously.-
All the best
Carlos
--- Carlos Manuel Freaza <cmfreaza@xxxxxxxxxxxx>
escribió:
> There is no recommended lubricants brands and /or
> types in the Rollei Technical Report. The book shows
> the way to dismount and to clean the speed
> escapement
> item for Rolleiflex 3.5, 2.8 and Rolleicords
> shutters
> but not the way to lubricate them.
> In fact the author recommends a good shutter
> cleaning
> to remove the different kind of oils used decades
> ago
> using a small screw-top jar filled with a cleaning
> fluid petrol based, while the wheel mechanism will
> be
> bathed the wheels at the drive should be moved to
> remove dirt deposits on the teeth flanks. He says
> that
> he does not recommend a new lubrication if the
> shutter
> won't be exposed anymore to a continual strain.-
>
> All the best
> Carlos
>
>
> --- FG <fuktighet@xxxxxxxxx> escribió:
>
> > Thanks for the figures, It is good to have an idea
> > (dimension) of what we
> > are talking about.
> > I have decided not to lube the shutter i've just
> > fixed on my rolleicord Vb
> > having in mind the dust that usually gathers
> around
> > those substances. At
> > least not extensively. Only a couple of drops
> spread
> > around with the help of
> > a q-tip on the parts that seemed to lead the
> > movements. (sounds imprecise,
> > but its actually better than it sounds).
> > Does anyone recommend a special lubricant?
> >
> > thanks to all for the input.
> >
> >
> > regards,
> > juan
> >
> >
> >
> > 2007/2/15, Carlos Manuel Freaza
> > <cmfreaza@xxxxxxxxxxxx>:
> > >
> > > I read in the Rollei Technical Report that a
> > > lubricated new or well serviced Compur shutter
> > used
> > > for the Rollei TLR cameras could be released
> > 30,000
> > > times before a shutter failure, if the shutter
> is
> > used
> > > regularly.
> > > According this book, the main problem with
> > lubricated
> > > mechanical shutters like the Compur is that the
> > > lubricant attracts dirt, if the shutter is not
> > used
> > > regularly the lubricant evaporates remaining the
> > dirt
> > > causing some of the problems we know. This is
> the
> > > reason serious collectors and shutters and
> cameras
> > > manufacturers maintain the shutter free of
> > lubricants
> > > for storage to avoid these problems. A Compur
> > shutter
> > > without lubricant could be released 5,000 times
> > before
> > > a shutter failure and this is the best way to
> keep
> > a
> > > mechanical shutter if the shutter is used
> > scarcely, it
> > > would be the case for collectors or
> photographers
> > > using his cameras once or twice times per year.
> > > An electronic focal plane metal shutter like the
> > used
> > > for the Canon Eos 1v can be released 120,000
> times
> > > before a shutter failure, but this isa differnet
> > > shutter type.-
> > >
> > > All the best
> > > Carlos
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
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>
>
>
>
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__________________________________________________
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Todo lo que querías saber, y lo que ni imaginabas,
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¡Probalo ya!
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