Tony Posted January 16, 2010 Report Share Posted January 16, 2010 Audi A5 hits kerb and loses 3 degrees of castor on the OSF, we know something is bent but where? Geometry measurement showed Both front cambers are fine SAI within limits Toe very displaced OSF castor 3 has degrees disparity OSF set-back -50' Wheel-base confirms this All information suggests the problem is within the unsprung chassis... All information suggests the bent component is longitudinal. Unsprung we have a wishbone and a control arm (AKA) tie arm/ track control arm. By triangulation this must be the criminal, and it is The control arm bushing absorbed so much energy it split Quote Link to comment Share on other sites More sharing options...
parthiban Posted January 17, 2010 Report Share Posted January 17, 2010 Is that good or bad? To me it looks good as nothing big or expensive got bent from what could have been quite a big impact but I don't really know anything Quote Link to comment Share on other sites More sharing options...
HighlandPete Posted January 17, 2010 Report Share Posted January 17, 2010 Is that good or bad? To me it looks good as nothing big or expensive got bent from what could have been quite a big impact but I don't really know anything Found the weakest point... Is it the subframe, or a replaceable bush housing? HighlandPete Quote Link to comment Share on other sites More sharing options...
jammy Posted January 17, 2010 Report Share Posted January 17, 2010 jeeeezus..how fast was the car goin on impact..i hit a big pothole yesterday that was bout 6" deep and as many wide on inspetion all looks as it should and still drives same as before..that was at 60mph Quote Link to comment Share on other sites More sharing options...
Tony Posted January 17, 2010 Author Report Share Posted January 17, 2010 Most modern chassis encompass a series of redundant components to preserve the chassis, these sacrificial components are normally in the unsprung area consisting of absorption longitudinally and transversely, in this case the bushing absorbed the energy. Quote Link to comment Share on other sites More sharing options...
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