Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 69,961   Posts: 1,523,132   Online: 961
      
Results 1 to 3 of 3
  1. #1

    Join Date
    Apr 2010
    Shooter
    Medium Format
    Posts
    2

    RB67 Back Frame Counter

    My son is using an RB67 for college photo projects and has encountered a curious problem with his backs.

    Black and white film (Ilford) will correctly trigger the frame counter on the back, but color film (Fuji) will not. Once the first frame has been shot (he has to pull the darkslide while winding on to see film so that he can line it up, sacrificing the first frame), the film will advance and stop correctly, but no counter.

    This happens with both of his backs. I can only guess it has something to do with the thickness of the backing paper. Has anyone encountered this problem, or have a solution? If it is a mechanical problem, can anyone suggest a good repair resource in the Midwest (Chicago)?

    I haven't seen the camera myself, and I'm more of a Hassy user, no experience with Mamiyas.

  2. #2

    Join Date
    Dec 2009
    Shooter
    4x5 Format
    Posts
    127
    One of the rollers has one (Pro-S) or two (Pro-SD) "rubber" friction rings. The upper ring, nearest the top of the insert, drives the frame counter/spacer. These rubber rings can become glazed - a thinner film base may be OK when a thicker- or stiffer-based film may fail to drive the roller.
    A small piece of rough cloth, slightly moistened, can be used to clean the surface of the "rubber" - this is usually all that's needed.

  3. #3

    Join Date
    Apr 2010
    Shooter
    Medium Format
    Posts
    2

    Hmmm

    This sounds promising.

    Another member pointed out that there is unlikely to be much difference in the backing paper thickness, which makes sense: it has to fit on the spool.

    But the glazed ring could well react differently to the tooth of the paper.

    Anyway, some cleaning is obviously in order.

    Thanks



 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Contact Us  |  Support Us!  |  Advertise  |  Site Terms  |  Archive  —   Search  |  Mobile Device Access  |  RSS  |  Facebook  |  Linkedin