I have 1.5" of good quality plywood under the front. Not aproblem at all. it has compressed a small amount but no big deal.
I have steel cherokee spacers in the rear.
This is funny Chet...I was walking around the shop this morning trying to find something to make some spacers out of.
I looked all over for something that would be low hassle, and I was thinking to myself, "I wonder if we have any hard wood around here".
Then I did a search for spacer demensions (again), and your post pops up. lol
You are soooooo getting hassled, just wait until I tell the gang! ÂÂ
Anyway, I ended up settling on the mystery material. Not sure what this stuff is, but it appears to have decent properties. These spacers are going on someone else's truck, and they only use it for going skiing and lakes off of mainlines.
UHMW is a pretty good choice for material. It is tuff, lasts in the elements, and is realitively cheap.
PVC machines well, and is pretty tuff, but more brittle and breaks down pretty quick under UV rays.
Delrin is a dream to machine, but its pricey.
I made a set out of PVC sheet. Rough cut the circles and then trued and bored them in the lathe. Those ones will be going on my Tracker as a temporary measure until I do SAS and all that jazz.
The ones above machined nice. Cut them in a cut-off bandsaw, faced, bored, and then I chamfered one side because I wasn't sure what the top of the bumpstop looks like, but I figured there would be a bevel of some sort there...probably a weld bead.