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Unread 03-10-2013, 10:07 PM   #1
RedCJ83
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AMC 20 Truss

Spun the diff on the tubes a while back, cut the spring perches, ran a bead around the tubes, put a support bracket on the center diff sides, built/installed a truss across top, realigned the driveshaft and rewelded purches.

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Unread 03-10-2013, 10:13 PM   #2
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Pic

Support bracket
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Unread 03-10-2013, 10:14 PM   #3
RedCJ83
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Pic

Truss is above, not support bracket....loaded. Wrong pic
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Unread 03-10-2013, 10:18 PM   #4
RedCJ83
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Pic 2

Support Bracket
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Unread 03-11-2013, 11:15 AM   #5
Renegade82
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I just had a truss welded to mine and the tubes welded also. Mine had 2 plug welds on each side (above and below the diff. spreader holes) that were welded from the factory. Did your have them?
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Unread 03-11-2013, 01:18 PM   #6
RedCJ83
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Yes, great looking truss.
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Unread 05-20-2014, 08:36 PM   #7
Newbjeep
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Unread 05-20-2014, 08:37 PM   #8
Newbjeep
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I know this is an old thread but its on topic. would 10 gauge metal be thick enough to do this with? I can get it free so id like to use it
P.s. its for my brother in-laws cj7
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Unread 05-21-2014, 11:26 AM   #9
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Anyone?
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Unread 05-21-2014, 01:11 PM   #10
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Unless anyone on here has access to Ansys, I don't think you can say positively. It all depends on where and how you use it (That's what she said)... You can resarch what other peoiple have used, but I am not sure you will get a response that tells you to use it without any backing...

The axles I have seen (4 or 5 in the last 2 months) that were bent, had bent just outside the perches. These jeeps had 31"-35" tires on them, and did light to moderate trail and desert running. Personally, I like to see the truss extend out to the axles tubes where the tubes flange out to cover the type of bending I described.

Right now, I am using an 1-3/4 .120 DOM tube bent in the middle to span over the pumpkin and out to the flanges. Then I am using 1/4 plate and tying in the ends of the tube to the axle tubes, and the middle of the tube to the main part of the pumpkin. In the middle I am using 1 side of plate, and on the ends possibly 2 to sandwhich the DOM tube in.
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Unread 05-21-2014, 02:12 PM   #11
Newbjeep
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He is running 35s my plan was to make basically a c channel that is shaped to his axle and end right around where it flares out at the end of the axle housing
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Unread 05-21-2014, 02:49 PM   #12
Renegade82
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Newbjeep - I wouldn't consider it. Most I've seen were at least 3/16" and thicker. Mine is made from 5/16" and then doubled across the top 1".

Dirtdude - I agree that a better truss would be out to the flanges where impact loads would be the greatest. My original plan was to do that but it got changed once the time came to do it.
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Unread 05-21-2014, 03:27 PM   #13
Newbjeep
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Ya im gonna tell him I can't do it cause I don't have the metal. Is there a kit out there for the offset 20?
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Unread 05-21-2014, 03:29 PM   #14
dirtdudeaz
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I didn't find any kits out there. There was a member on here who has an ebay fab store that used to do them. I tried PM'ing him a while back and never heard anything. Maybe you could try...
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Unread 05-21-2014, 03:33 PM   #15
Newbjeep
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I think ill have him go to a shop he knows of that could probably do it for him thanks for the responses
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