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Mr. Beefy's "not quite yet U4 buggy" build

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409K views 2.8K replies 117 participants last post by  Mr. Beefy  
#1 · (Edited)
Alright fine, I'll make a new build thread :finger: :sonicjay:

Bought a MandM offroad chassis from PJ, super good dude to deal with and super nice. HIGHLY recommend. http://mandmfab.com/id68.html
This is chassis #20

Order placed on Monday 11-5 at about noon..

Got this on 11-6.

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11-9
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11-12
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11-13
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#2,698 ·
Got the truss braced and finished. I added some cross supports under the bump stops and under the link mounts. I also ran some cross tubes front to back to tie the truss together and give me a spot to pass steering hoses.

Spent a few hours welding it it, trying to keep it cool and move around.

Got the gears finish set, everything painted, just need to finish the steering and it's ready to rip.
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#2,705 ·
Just waiting for shafts and the replacement knuckles.

We are using nutless ball joints eliminators, the old knuckles had the the nut style eliminators welded in them. We can't run the nut style eliminators with the big bell, that's why we are changing, and rather than cutting em out we horse traded for another set of knuckles I did highsteer on.
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#2,718 ·
Kyle M. said:
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Not trying to take anything away from Beefy's rig here, it's awesome and so is the fab work. But am I missing something here? What's the benefit of the huge 40 spline shafts when the stub alone has 3 different spots significantly smaller than the minor diameter of the spines? It looks like they have smooth machining and generous fillets for minimized stress risers, but those spots are still going to be weaker than the big splines.
 
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#2,720 ·
I have no idea. Rcv kinda screwed up my shafts, they put the seal surfaces in the wrong places so Kyle wrapped electrical tape around them for the koh trip. As far as the difference in diameter, I have not seen them not installed in the car yet. I assume the stubs are still larger diameter than the inner shafts. The main idea with the large stubs is to eliminate the need for a drive flange. One less point of failure, which oddly enough failed on me this fall.

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