OK, after fiddling about with this, and finding even more ways to confuse myself, here's something I've come up as proposed suspension. To keep things simple (I can later post more data and details), here's few graphs for front and rear suspension. I'd say I'm fairly content with how front suspension turned out, but am not terribly happy about rear that's supposed to follow from it. I think I may have gotten the rear RC to follow front in quite satisfactory way- they're not moving parallel to each other on those graphs, because I think that front and rear parts of the car are not supposed to move in parallel with increasing load (I think the nose pitches up, right?), so the RC follows that rather than with jounce. Anyways, I started out with basic ass
umption of 60:40 weight distribution, and 550kg car. I've raised rear frequency by some 10% compared to front (they're actually both pretty low (~1.5Hz).. And the confusing bit is that pitch and bounce (still ass
umed), seem pretty close to what Gillespie/Olley recommends as maximum (and I'd have to soften the springs even further to get them down). Anyways, I went for 150mm travel on front wheels (60mm rebound), and 140mm rear (55mm in rebound). The main concern is the scrub of rear wheels, but also the point where they get more 'negative' camber than the front wheels, and that's, as I've heard, not desirable (that the front ones should always have more 'negative' camber).
Should I redesign the thing starting from the front suspension? And what about the camber curves- I just can't keep the outer wheel from getting positive camber in roll, but have quite a big camber change...3D Camber curve for front wheel (plot vs bump and steer)
Any help and suggestions would be greatly appreciated.
Edited by Wolf, 07 March 2012 - 01:19.