dito ^^^Phew, have spent all morning and half of the afternoon reading about this project (well, I skimmed through the jealous accusatory posts). Fantastic project, well done, you've gotten me inspired. I'm still a corporate slave but I have plans, and now I also have a ton of inspiration. THANKS!!!
very inspiring !!!
Jay: thank you for taking the time and post/explain so many details about your rig ... i highly appreciate it
i would like to bring the discussion back to the rear suspension failure; (note: this is strictly technical and is NOT intended as any kind of "i know better" or "you should have" post... just trying to learn and may add a theory and possible explanation to the rear suspension failure that may could safe myself as well as others from a similar failure)
first off, big truck air suspension is not new to me (i already turned a IH 4900 MDT , Peterbuilt 387 and Peterbilt 379 into rv conversion and right now i`m in the planing stage to build a new MDT mild expo rig)
i noticed that it looks like the air leaf suspension failed right at the bolt hole (that locates the axle)
.... my theory is material fatigue due to the air leaf design; the design does not allow a lot of axle articulation (its basically a fixed two link)
it creates leaf twist when forced to articulate what could lead to material fatigue.
when i did research off-road capable suspension designs for my new rig i noticed that (BigRig) suspension designs are actually rated for percentage of off-road.
may take a look at this link to SAF/Holland/Neway "AD series" suspension;
Quote; "Approved for 100% off-highway application"
it looks like all the articulation twist is absorbed by rubber bushings... and no stress to the (very beefy) trailing arm at all.
i`m thinking to build a similar design for my truck based rig...
i would be very interested in what others think about my theory