Quote Originally Posted by senna View Post
I'm not going to say that anyone is wrong or that the product i have posted above is 100% correct for everyone's use, however I disagree that the longevity is compromised just because it is poly. I personally haven't seen an issue with this bush sliding on its post, however after around 60+ kits sold I don't see every application after real world use.

In our workshop we have used all forms of bushes, Nolathane (fail - too hard), Noltec (extreme fail - no consistency, crumbles) and Superthane (too hard also) and we settled with the Super Pro brand because they do things correctly and develop their bushes and also the alloy and steel shell bonding process is much more advanced which reduces the risk of separation.

In alot of cases Hardened rubber or OEM is a good option, polyurethane has its place in the performance market too.
I can see by that design you displayed , that it has come some way - the slight arch grooves would obviously prevent some of the distortion etc. Good to see they (poly bush designers/sellers) are trying to keep it in the market.
Much better than the ES soild lug I used some time ago.
Can i ask , do these designs you state use some form of lubrication internally (on the lug) or sit dry with grooves etc ?