Need some advice on material selection

[ruggles]

astroracer

your setup looks pretty good. I have had some experience with poly bushings on jeep suspension(both leaf and 4 link). From what I have seen, poly is good as long as you have a way of purging out the old grease and adding new somehow. Alot of offroad poly bushings are fluted(grease grooves) and use a bolt with a zerk fitting on it. This works nice, but I am not sure how much weaker the greasable bolt is than a regular one. I am sure there are alot of people that will disagree with me (about poly being worth a crap) but I think it is good if you use it how you are intending. Good luck.

Paul

[astroracer]

Okay guys, sounds like I have a plan.
John U.,
The stackup over the inner sleeve is exactly as you mentioned. I have yet to check it with torqued fasteners in an installed position but I'll do that as soon as I have some brackets made. I will then build my welding fixture to suit.
I think I will use hardened washers on the inside of the brackets and plug weld them from the outside through holes drilled in the bracket. I can then finish off the welds to make them disappear. 7ga 1018 will be used for the brackets.
Ruggles,
The bushings have grease grooves and I will be adding grease zerks to all of the bushings after they are welded up.
Thanks to everyone who has jumped in to help. If anyone see's any problems with this plan please let me know your concerns.
Mark