Haynes Front Suspension Improvements

[mark]

I'm aware that the front geometry is probably not perfect but it also sounds like some under-steer being provoked by your new big power and the extra weight

Teesside autodrome track has some very tight corners and my car did have the front outer wheel screeching as you describe when really pushing on, a few trial and error damper adjustments made the world of difference

I found once i had dialled out the front wheel screech that the lack of an lsd was more of an issue anyway in hairpin type corners

An lsd is next on my "want to do list" and probably a stronger upgraded type 9

I think its incredibly difficult to set these cars up to a certain spec and then be happy with them, there is so many variables from car to car and every corner you drive around, i know you can set the fundamental things within a reasonable margin but nothing beats driving round a track like your hair is on fire then making some adjustments and doing it again

[AshG]

its only 30kg heavier than it was with the pinto it didnt even make a difference to the ride height and the fact that tillys bike engined one does it too shows its not a weight issue.

really need to model it properly to work it all out been tinkering in solid works but it takes me ages to draw things as i don't use it all the time.

also there isnt any harm in redesigning the wishbones and makeing a new upright to see if it can be improved, nothing ventured nothing gained and all that.

[les g]

Ash
please dont post a joke now
or you will end up banned
you know the rules
post jokes and be critical about the roadster and its.....
off to the naughty step for you......
lol
cheers les g
ps . i think your problem has been highlighted on here before

[minicountryman1961]

Originally Posted by AshG

its only 30kg heavier than it was with the pinto it didnt even make a difference to the ride height and the fact that tillys bike engined one does it too shows its not a weight issue.

really need to model it properly to work it all out been tinkering in solid works but it takes me ages to draw things as i don't use it all the time.

also there isnt any harm in redesigning the wishbones and makeing a new upright to see if it can be improved, nothing ventured nothing gained and all that.

Have any here added a front and/or rear sway bar (anti-roll bar)? If so, what has been the effect on handling?

[Cyberbeej]

hopefully i can add to that data shortly as i have front and rear anti roll bars to fit.
Would be interested in what you guys com up with regarding the short falls of the sierra hub against a purpose made item.

Bought this book and it makes interesting reading.
http://cgi.ebay.co.uk/Build-and-Modi...item27b76cc814

[martin62]

There was a Haynes Roadster on the Irish Kit Car Club stand at Stoneleigh that has anti roll bars front and back who races it at Mondello and also drives it on the road.I will try and get more details.

[MarkB]

Anti roll bar masks rather than cures the issue though.

[MarkB]

Scientific explanation to the issue in hand:















The hurdygurdy bits are going giddy into positive doodah causing the "kevin Shwantz all getting kinda squirrely" syndrome...

[minicountryman1961]

Originally Posted by MarkB

Scientific explanation to the issue in hand:
The hurdygurdy bits are going giddy into positive doodah causing the "kevin Shwantz all getting kinda squirrely" syndrome...

other than my Mini and Austin 1300, I can't think of any production cars I have owned that did not have a front sway bar as standard.

Lotus 7s had them, Caterhams & Sierras too.

[MarkB]

My old Locost never had an arb and also never under steered, was a tad tail happy though but that is what a rwd sports car is all about