Old school lens repair options

Discussion in 'Large Format Cameras and Accessories' started by nhemann, Apr 17, 2014.

  1. nhemann

    nhemann Member

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    Hello all,

    Looking for a little help. I've got a very nice Cycle-Poco 5x7. The lens is clear and the aperture leaves work perfectly but I recently noticed that the shutter is sticking. Does anybody have a recommendation on who I can send it out to for the CLA treatment? I'd love to get this girl working again - its the oldest in my collection.

    Thanks
     

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  2. Dan Daniel

    Dan Daniel Subscriber

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  3. jnanian

    jnanian Advertiser Advertiser

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    zack's can repair just about anything
    has an house machine shop too.

    that said, sometimes old school shutters ( like degroff pistons )
    use a dry lubricant ... like graphite dust ...
    charlie webb, a pro who used to post here often, used to recommend
    lubricating the degroff pistons with graphite dust ...
    (i am guessing that old piston shutters might be the same)

    i did this same treatment on an old boston pencil sharpener when
    the gearing got clunky, worked like a charm ... i realized that the
    pencil lead ( graphite ) lubricated every sharpening ...

    good luck !
    john
     
  4. E. von Hoegh

    E. von Hoegh Member

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    That's a pretty simple shutter, I believe it has only the one speed "I" and the piston/cylinder are for a bulb & hose release. Before you succumb to any homebrew methods, be advised that quite a few shutters of that vintage have hard rubber or paper composition shutter/ aperture blades that can turn to goo if you flood it with Ronsonol or similar solvents.
    Timing piston/cylinder assemblies are best left perfectly clean and dry.