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Post by yammies on Apr 29, 2013 22:35:19 GMT 12
Anyone got one of these they are willing to part with?
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Post by flyingbrick on Apr 29, 2013 23:39:13 GMT 12
They much of an upgrade for gem?
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Post by yammies on Apr 30, 2013 16:38:06 GMT 12
I'd say so, but not necessarily with the standard engine.
My engine is a lot heavier than standard so will need a higher rate (heavier) sway bar than standard to prevent excessive roll
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Post by flyingbrick on Apr 30, 2013 16:50:45 GMT 12
Great info, thanks!
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Post by yammies on Apr 30, 2013 22:17:57 GMT 12
Basically the stiffer you make it, the more it will want to slide. I.e. if you stiffen up the front, you can induce understeer, and if you stiffen the rear, you can induce oversteer.
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Post by cul8r on Apr 30, 2013 22:33:36 GMT 12
"You dont fix the front at the front, you fix the front at the rear" ....
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Post by gordo on May 1, 2013 0:21:42 GMT 12
You're both right - stiffer front bar can reduce understeer by reducing body roll and positive camber gain (tyre roll under), stiffer rear bar will reduce understeer by reducing body roll and increasing load transfer across the rear axle.
Not that simple, though, as increasing the laod transfer across the driving axle (either end) will unload the inside tyre and reduce the torque (power) that can be put through the axle - unless you're running a lower powered vehicle, or running a fairly tight LSD, this can be a problem.
Overall, a mixture of springs and ARBs will be the best compromise for steady state cornering and, for the transition, the dampers have to be considered as well.
Oh, I'd suggest KYB rally dampers, if you can get them, as a darned good road compromise.
Personally, I prefer reasonably supple springs that allow good suspension travel with firm damping and ARBs to balance the roll. That way reasonable ride and road compliance is possible - gets ride of the skipping and bobbing - while allowing good cornering and handling. Stiff, short travel springs belong on the race track, not the road... IMO, of course.
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Post by yammies on May 2, 2013 12:23:17 GMT 12
"You dont fix the front at the front, you fix the front at the rear" .... That'd be on a standard setup... mine is far from standard. I have increased the front end weight, and also the torque. The ideal situation is to run as soft a spring as possible, while still loading the tyres sufficiently, and use the swaybar/anti-roll bar to induce extra load under cornering. I'm increasing the rear spring rate to reduce/eliminate axle tramp, and the front to load the tyres more under cornering. I will still need a sway bar increase though due to the increased weight over the standard engine |
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