Weight and torque play a significant part in it all. Example - If its a up to 300hp 4 cyl for example (you mentioned Impreza?), a 1800mm track should surfice taking aero, stability, manueverability etc into account for a sedan based trackday car.
Thank you.
Yes I understand there are area's to be wary, obviously mid belly rearwards isnt a good place to be low for example.
Also I will try to have more clearance at the furthermost point of the chassis.
Of course we have all seen what happens to low cars with a big front spoiler hanging...
http://i88.photobucket.com/albums/k180/DawieCoetzee/RTLS02.jpg
Found this, may help you, didnt help me because I dont agree that the front end has the RC there.
But I've been wrong before, lol!
No it doesnt help because my car isnt a car so the 5" law doesnt apply :-)
I havent built a roadcar from scratch before (a few racers up my sleeve)and have a 1" chassis clearance at full travel, level car. I was wondering if there was something about this figure that the more experienced...
To my knowledge and very old memory, the RC is at the center in the middle of the 2 torsion beams and it generally stays there during roll as the inside and outside do equally opposites and there isn't camber change thru wheel travel. I guess with an anti roll bar the practicle roll center must...
look at history for answers as well.
The Mazda MX6 turbo road car was about as much as is practicle for a street front drive car, look up test reports for its specs and drive reports.
English 2 litre touring racing cars had a formula the gave rear drive cars 100kgs extra and 4 wheel drive...
thanks for taking the time to answer me.
I think there's is some confusion as to what I require, although I was interested to know the industry standard (thanks Greg).
I have 3" of wheel travel in bump, I have 4" of ground clearance. Is this a reasonable combination for average and light...
I am interested to know if/what the 'industry' standard for ground clearance is (rule of the thumb) in comparison to suspension travel.
My vehicle i am building for weekend road use has 4" of shaft (mcpherson) with 2" bump rubbers, so I assume 3" of front suspension bump travel.
I currently...
Sorry i thought it was different enough to start a new thread.
I want to have a go at a 3 wheeler track day special ala Campagna T Rex - http://www.go-t-rex.com - please check it out before replying as you may be thinking Reliant Robin !!
Opinion on the benefits of neg scrub or pos scrub would...
The car will 'slide' more at the end you add the weight too IF the attitude of the car remains unchanged from the weight increase.
Example if you introduce increased pitch because of the weight then other variables may enter the picture such as changed roll center/s.
TT510Guy - "RS1800 has leaf springs, which per RCVD is pretty far from optimal. A lot of suspenion ills can be hidden by having low overall vehicle weight".
Indeed the RS1800 has leaf springs but a simple statement that not exactly describes it correctly.
The axle location is controlled fully...
Just building a, um well dont really know what - track day, hillclimb,clubber etc. and made some uprights and now looking at wheels and A-arm lengths to determine my prefered track. Uprights have about 5 degrees kpi (25mm offset over 250mm pivot points)and will easily fit into a 13" alloy wheel...
If rear wheel drive cars generaly have positive scrub and some front wheel drive cars have negative scrub, what would be the effect of giving a rwd car negative?
(apologies if I got the pos and neg around the wrong way)
