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Old 04-16-2013, 05:25 PM   #12
JJorgensen52
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Join Date: Apr 2007
Location: Southeast CT
Posts: 1,472
Re: '72 C3500 GMC flatbed project

Quote:
Originally Posted by MrBeast View Post
I'd just take that ram to a local machine shop and have them make you a new rod for it. Shouldn't be all that expensive and will be well worth it to have it done right.
I'm getting a quote for that from my local hydraulics service place, new rod and renew the seals, etc.

Didn't make much progress today. Weather is being non-cooperative!

Driver's side of frame - split welded and fished, patch welded in place for the bottom of the frame.




I have new hardware for mounting the ram, and most of the metal needed to rebuild the uprights and the subframe.


HOWEVER - design snag!

Turns out that when they installed the dump bed on the '67, they cut 17" off the rear of the frame to make the dump angle as it should. Since I want to keep the original flatbed and frame dimensions, that's no good.

Nearest I can figure, if I shift the subframe back when I mount it to the GMC, I can still achieve a 50* dump angle with the current cylinder and geometry if I lengthen the uprights and taper the rear overhang behind the pivot. I'm going to make up a model of this later on and make sure everything works out.
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