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Brian Conn

AMT Ford C series cab over fitment issues and solutions Pt2 Rear Axle

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  The rear axle visibly looks good...its what you don't see necessarily that is the issue..allow me to explain.

  2v2ZkYWD2xAEDb4.jpg

The AMT truck rear axle has a steel rod that is attached to the wheel assembly's.  As you can see in the picture, the rod is much smaller than the center hole in the rear axle which can cause, depending on if a body is mounted, a clearance issue with the top of the tire and the underside of the body.  As a rule of thumb, there needs to be no less than 5 mm. (5" in 1:1 scale) of clearance between the top of the tire and the underside of the body.  More clearance is builders choice.  Where this would not be an issue is with the C series tractor since it has a fifth wheel.

                WASTE NOT, WANT NOT

 I don't see common, ordinary things like most people, rather I see a potential, useful item to be used for scratch building....case in point.

                2v2ZkYWLhxAEDb4.jpg  

These are the guts out of a dried up click pen...the White piece is the perfect size to fit into the axle and also allow the steel rod to fit into.  Its now a bushing of sorts that pretty much eliminates the slop in the rear axle and will add a small, bit more clearance between the top of the tire and underside of the body...  aprox. 2 mm..

2v2ZkYWgCxAEDb4.jpg

  This is not a drill bit , but rather a reamer.  Ream the axle holes large enough so that the White piece fits into the axle snugly. I found that I only needed to ream a small bit on each side of the axle for the pen piece to properly fit.

 

    2v2ZkYWWLxAEDb4.jpg

  Fit the piece into the axle and cut off the excess.  Insert the steel rod, attach the wheels and you done.  You can do the same thing with an Evergreen tube...unsure of the number or dimensions as I don't have any on hand at this time.

   

Edited by Brian Conn
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  Your very welcome!  Look for a part 3 relating to the cab and its inherit issue and how to remedy it coming out soon...got side tracked with work and the winter storm.    

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