Help with Athearn F7A Truck Frames

Discussion in 'HO Scale Model Trains' started by CN_Pete, Mar 13, 2006.

  1. CN_Pete

    CN_Pete Member

    I just recently completed 2 of my Athearn F7 A & B units. I completed the truck sideframes with all the brake gear and steps. Now that they are installed they hit the ladder on the cab. This makes it impossible to go around any bend. Am i missing something, or is there a trick. Has any one else had this problem? If so how do i fix it.

  2. Glen Haasdyk

    Glen Haasdyk Active Member

    This is comon on the Athearn f's. You basically have two choices.
    1) you can cut or file the brake gear so that they can clear the sideframes
    2) you can carefully file the backsides of the ladders.

    Some people do a little of both so the brake gear isn't as badly disfigured.
  3. nachoman

    nachoman Guest

    Curious...what radius are your curves? I remember having that poblem on 18" radius, but always assumed this would not be a problem on larger curves.

  4. CN_Pete

    CN_Pete Member

    Thanks, it seems that the steps are binding on the brake cylinder.
  5. CN_Pete

    CN_Pete Member

    I am using 18 inch radius.
  6. Russ Bellinis

    Russ Bellinis Active Member

    I have had the same problem, fixed it by sanding down the back side of the brake cylinder before installing it. The slight loss of depth on the detail doesn't show and operation is much better.

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