Spent the last 2 days trying to adjust my cars suspension and it’s still not right. It’s probably a lot closer than it was but its still not as good as it should be. Having completed the bump steer modifications the toe in now only changes by about 2.4mm over the whole suspension travel which is a vast improvement over the 2cm change that I had before I started the modifications.
I only shorten the steering rack by 5cm but it looks like that was slightly too much! The computer model I did can’t have been as accurate as I was expecting as the only way to reduce the bump steer now would be to extend the rack very slightly (Don’t think I will bother as 2.4mm is good enough). Before continuing with the suspension setup tomorrow I have taken the car out for a drive tonight. The handling was defiantly better along the bumpy country roads but the car is still pulling slightly to one side.
I think I lot of the issues I have with the front wheel suspension setup is due to the castor not being equal between the two front wheels. However with the equipment I have this is the one thing I can’t measure so it’s impossible for me to correct. I plan to check the suspension settings again and if everything still looks ok it must be caused by the caster angle being incorrect so I’ll have no choice but take a trip to a garage so they can measure it for me.
If I remember I will also take some photo’s of my front suspension tomorrow and upload them to my web site.