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Hello, would someone familiar with the body to chassis mounts on the old Weaver body spur to the chassis plate screw hole locations be able to offer their knowledge as to whether the locations are the same for the old chain drive engines and the newer style hi-rail can motor units? I am interested in purchasing an old chain drive 3-rail unit for the shell to replace it on a newer style body and need to know if they will match up without doing a ton of work to make it happen.

I doubt that Weaver would have gone through that much trouble to change the screw hole locations unless  they had to re-engineer the molds to not allow any interference or interior clearances for the upgrade from the chain drive to the more modern drive units.

Thank you

Gene M.

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No the mounts do Not match. Weaver models offered an "upgrade" of their old chain drive FA's to the newer twin can motors with TMCC. They [Weaver] forewarned the mounting would be different as the old body would be mounted to the frame with 2/56 screws mounted on the bottom sides of the locos. I did it as i had numerous hard to find p&d brass detail parts on the old shells thast would destroy the old shells if attempted to be taken off. In the end the old shells looked ugly with 2/56 screw heads sticking out the side.

OK, thank you prrhorseshoecurve for your response. So Weaver did indeed re-tool their molds for the upgrade can motors. Most likely, the position of the screw spurs had to be re-positioned to make room for the controls, motors and such.

If anyone has a new PRR FA-2 A Unit, tuscan 5-stripe, I would be interested. It must fit the upgrade can motor design chassis.

Gene M.

New mounting pads/posts (styrene rod, square or even round, drilled then glued in) can be added to the old body interior to allow the newer screw locations to be used. I do not have one in front of me, so details are a question mark, but I have adapted Company-A body to company-B frame this way because of mis-matched mounting holes/posts, and it was easier/safer than drilling new frame holes.

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