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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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#1,197 ·
Time for some rear aluminum lower links. Both rears are now bent. Haven't looked over the rest for any damage yet.

But I do need to look into small driveability concern. Seems once warmed up I get a SES light and my temps go up a little more then normal and sounds like its spark knocking a little. Thinking I may have a bad o2 sensor.
 
#1,199 · (Edited)
Finally getting a feel for the struts and the new suspension. Feeling more confident with it on obstacles.

Grizzly locker worked well to.

Really starting to like the MTR's as well. We ran the hump trail yesterday, and while it was a lot wetter then usual, they really seemed to grab the rocks and logs better then my ltbs did. This was the first real comparison I have had between the two where I have used them both in the same place.
 
#1,200 ·
I was going to go aluminum because mine were bent. My originals were 1-3/4 x 1/4 wall & they bent shortly after I built them. When I looked at the weight savings versus cost, I couldn't justify it. Instead I went 1-3/4 x 3/8 wall and then drilled & tapped my 1-1/4 shank joints in instead of having to weld in bungs. I couldn't find anyone who had bent their links using that size and so far, neither have I.
My steel links weigh 6 pounds more than aluminum would. I forget the cost difference but it was significant, like $75 more.

Interesting that you're liking the MTR's. I still don't know what I am going to do when I get rid of the Krawlers.
 
#1,204 ·
FYI I looked up my old numbers.
DOM = $12/ ft
Alum = $26/ ft
Figure on 4 links @ 3ft each, difference is $168.

DOM = 16.5 pounds/ ft
Alum = 11.3 pounds/ ft
Weight savings = 62 pounds.

To me, it wasn't worth the extra cash to save that little weight.

I don't see this as a right or wrong way to go........... purely personal choice. My one other reason I liked the steel is that if necessary, it's weldable. Let a jam nut come loose & wabble out the tapped hole on aluminum & you are screwed. With steel, weld the fawker up and go back to wheeling.
 
#1,209 ·
FYI I looked up my old numbers.
DOM = $12/ ft
Alum = $26/ ft
Figure on 4 links @ 3ft each, difference is $168.
Does that include bungs and time to weld them in? Not that most people measure time, but having done both styles. Aluminum definitely wins as far as hassle goes.

If you're going to go with steel I would suggest going lighter wall than 3/8 using chromoly and getting them heat treated. Especially if its for a buggy, a full bodied rig who cares, its already heavy so use 3/8 wall. :finger:

I run 2.25" AL lowers on my buggy since thats what Branik recommends for racing. They have held up great so far after over a dozen wheeling trips and two TREC races I did last year.