de dion camber with weld

Started by ALF750, July 23, 2025, 12:11:01 PM

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ALF750

Hi, I read somewhere you can get some camber in the rear of a transaxle car by running a bead of weld along the top, then it shrinks back to give the neg. camber.   Is there any rule of thumb for inches of weld per degree of camber??   My 75 must have been dropped on its head sometime, as it has 1.25 deg toe in on left and -0.55 deg camber on the right, so wondering if I could correct this so both sides the same?  TIA

milanoguy

Quote from: ALF750 on July 23, 2025, 12:11:01 PMas it has 1.25 deg toe in on left and -0.55 deg camber on the right, so wondering if I could correct this so both sides the same?  TIA
Your message is hard to understand. You have 1.25 degrees of toe in on the left, how many degrees of toe in on the right ?  If your deDion tube is bent, then normally it is junk. In theory you could have it straightened by somebody with a frame straightening machine but I doubt it.

In regard to inducing camber by welding I've never done it. But apparently you take the tube to a big truck repair place, the kind that deal with dump trucks concrete trucks that kind of stuff. Those trucks still use solid front axles. They adjust camber and everything else by heating and welding the beam axle till it's where they want it. It's a set up a camber gauge on the axle and weld till the gauge reads what you want kind of operation.
I recently saw a page maybe on facebook where somebody was doing this but of course now I can't find it.

The topic is discussed at great length in this thread on the AlfaBB, which I didn't read in full

https://www.alfabb.com/threads/dedion-tube-bending.42348/#replies

However this guy said

... There is a small industry devoted to straightening straght axles by bending them. Look in any RV repair shop. They will give you any camber you want. Something else to consider. The traction available from modern tires of the past even 5 years far surpasse anything the 116 chassis designers dreamed of. Springs/torsion bars, dampers, geometry(bushings for accuracy of intended geometry) and chassis rigidity have to be considered together for effective handling

https://www.alfabb.com/threads/dedion-tube-bending.42348/page-3?post_id=368935#post-368935

Report back and tell us what you find