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Omega General Help / Re: Polybushing
« on: 24 September 2017, 08:28:31 »
Therefore only thing that propably causes arm to break from rear bushing is that rear bush is replaced with too hard bush that wont allow enough movement and/or shitty quality arm that would break anyway with original bushing and enought time and harsh ride.
The reason is because the rear poly bushes that have been tried previously are designed to work like the front ones; where the arm rotates around the inner metal sleeve. But the rear bushes work in a different plane - they are more of a joint - and so transfer all of the force(from a heavy car, with large wheels) directly into a part of the wishbone that isn't designed to flex in that way. That is guaranteed to cause exactly the failure that Al's pictures show. Attempting to strengthen the wishbone(which don't fail there when correctly equipped) is a dangerous bodge. The Omega specific bushes mentioned in this thread look much more like the OE rubber ones, and hopefully won't cause such wishbone failures. They're cheap enough that I'm tempted to buy a pair to evaluate whether I am prepared to use them.
Just what I'm trying to say.
http://www.strongflex.eu/en/omega-b-94-99/1583-131806a-front-lower-wishbone-rear-bush-sport-5902553518580.html
This is the bush Im using, it is one piece of PUR material and one separate central metal tube and needs to be bushed through arm, it is shaped and shoft enough to operate as a joint.
