Chromega D head replacing Condenser Head

Discussion in 'Darkroom Equipment' started by ic-racer, Nov 24, 2009.

  1. ic-racer

    ic-racer Member

    Messages:
    7,473
    Joined:
    Feb 25, 2007
    Location:
    Midwest USA
    Shooter:
    Multi Format
    Looks like Omega made some longer adapter arms to allow the Super Chromega II head to retrofit the D condenser enlargers.

    It also looks like I can just get two new longer rods from McMaster Carr. There appear to be set-screws holding the levers to the rods. I'm thinking I'm going to take the levers off the rods and put them on two new longer rods.

    Its a friend's enlarger, so I don't have it with me to check. I just need a plan for when I go over to install his Chromega II head.

    I have both the D3 chassis and Chromega PDF manuals and it seems like these rods are the only thing I'm going to have trouble with.

    Any additional info appreciated.
     
    Last edited by a moderator: Nov 24, 2009
  2. Lee L

    Lee L Member

    Messages:
    3,247
    Joined:
    Nov 17, 2004
    Shooter:
    Multi Format
    You're essentially correct, but missing one thing. There are spacer sleeves that fit over the longer Chromega rods between the hooks on the chassis that hold the rods and the lever arms on the right side. These sleeves keep the head from drifting to the left and getting off center relative to the negative stage.

    Lee
     
  3. ic-racer

    ic-racer Member

    Messages:
    7,473
    Joined:
    Feb 25, 2007
    Location:
    Midwest USA
    Shooter:
    Multi Format
    Ok, that makes sense. I'll either use a pieces of PVC tubing or a locking collar.
     
  4. Lee L

    Lee L Member

    Messages:
    3,247
    Joined:
    Nov 17, 2004
    Shooter:
    Multi Format
    Should work. I was also thinking that compression springs from the local hardware store might work. Harry Taylor at http://www.classic-enlargers.com/ might also have them if you want original equipment.

    Lee
     
  5. largeformat pat

    largeformat pat Member

    Messages:
    287
    Joined:
    Jan 19, 2008
    Location:
    Upper Hunter
    Shooter:
    8x10 Format
    The other option is to use aluminum tube, this all I did. I cut the arms myself from round bar. Used a center punch to crease the aluminum round bar where the set screws sit. Then slide the aluminum tube over to act as the spacer.
    Hope it helps
    Pat
     
  6. ic-racer

    ic-racer Member

    Messages:
    7,473
    Joined:
    Feb 25, 2007
    Location:
    Midwest USA
    Shooter:
    Multi Format
    McMaster Carr seemed to have almost too many options. I was thinking the aluminum would be best. Aluminum tube would be good for the spacer.

    I delivered the Chromega head to its new owner today, I'll pass this info on to him.
     
  7. ic-racer

    ic-racer Member

    Messages:
    7,473
    Joined:
    Feb 25, 2007
    Location:
    Midwest USA
    Shooter:
    Multi Format
    I wound up getting some zinc plated steel 3/8" rod from the local hardware store. It cut easily with a hacksaw.

    They also had 3/8" locking collars. The installation went very well and looks just like a factory job. $9 USD in parts.