marc9976 wrote:
Can you explain that single sheer and double sheer thing

For double sheer, basically it allows the bolts load to be distributed through two surfaces instead of one, unlike single sheer. To give an example, my control arms have the spherical bushing, but it is mounted between two pieces of metal, and the bolt goes through one piece of metal, through the bushing, then out the other piece of metal, thus sandwiching the bushing between. The forces places on the bolt would have to sheer the bolt in two places (each side of the bushing) for it to fail. Single sheer is the bolt going through the bushing with the bolt head stopping at the bushing, then the end of the bolt goes through one mount plate and this would put the stress between the bushing and one mount, so double sheer would split that force in half, therefore single sheer would cause the bolt to bend/brake/sheer under less extreme circumstances. Tie Rod Ends and Ball Joints are designed for this stress, whereas a standard bolt is not. If you go out and flex and run the trails to the extreme that we have been, which isn't much, but the IFS setup thinks it is, then I would bet a single sheer bolt/spherical bushing setup with fail much faster than a ball joint would.
I don't know what the price is on Rusty's arms, but there is a dealer, right here on this very thread, that sells Al's Arms for a little less than he does himself.
