I've said this many times regarding poly bushes. They can be great, but It would be a mistake to believe they are the holy grail and replace all bushes on the vehicle with them. Too many do that then find it has an adverse effect on the ride but no idea which ones ruined it. Very important to do them over time. That way you can deduce which ones are having a negative effect (if any) and then either revert back to rubber ones or a different composition. Its generally a no brainer with swing axles but droplinks for instance, can be troublesome.
@@Ralphs-House That's an interesting point of view. Most points of application are pivot points, so I would have thought that changing the spring rates would have more of a change than changing the rubber components for PolyBushes. But then again you can get a harder composition than the one I fitted. So there must be a difference 🤷♂️
Metalastik bushes are also known as compliance bushes. Poly bushes are a lot less compliant than nitrile rubber, and if used widely will mean increased noise-vibration, and in most applications will wear out quite quickly. A good idea for competition cars where noise and vibration doesn't matter much, and suspension is regularly overhauled, but not a great idea for a road car.
@@battlebbot I totally accept what you say. The problem is where to buy good quality rubber bushings from these days. After the original manufacturers were forced to change the way rubber was made, the really good quality rubber just isn't available anymore so PolyBushes or similar from a reputable company seems to be a more acceptable option.
@@itsalldoable Poly bushes are fine if you are ok with the short service life and the possibility of increased NVH. Metalstik bushes are widely used in many other applications other than automotive, and it might be worth checking if anything good quality is available at all?
@@battlebbot I will see how the project pans out. Once it's on the road I may change the rear end completely. Besides, the PolyBushes are used extensively among the Triumph clubs, so time will tell.
