RallyCross car prep?
Yes, I said book. I'm kinda ole fashioned and like to have something I can read that is not on a lap top etc.
Something similar to "How To Make Your Car Handle" or the Carroll Smith books.
Thank you
RallyCross car prep?
Yes, I said book. I'm kinda ole fashioned and like to have something I can read that is not on a lap top etc.
Something similar to "How To Make Your Car Handle" or the Carroll Smith books.
Thank you
Well that sucks. And only 6 opinions, I would have guessed 8 or so.
Coming from a road race background I used pyrometer readings to adjust tire pressures and camber settings. That worked very well for me. For rallyX I’ve been told to air-up tires to prevent debeading. That effectively eliminates the usefulness of pyrometer readings. How does one figure out what camber settings and tire pressures are optimum?
Really depends what your local surface is like. Most courses will change over the runs and you have to drive it in a way that works for you.
My strategy is a stock alignment and drive as hard as I can. Other than that it's trial and error or talk to other people running a similar chassis and see what they are doing.
Yeah the reason for six different answers is because different surface/course type combinations will want different things.
In general I agree, leave everything stuck until/unless you find some major handling deficiency, then fix that.
For tire pressures, start high and work down until either you hit a speed plateau or you start running into debead issues. In general, assuming a "typical" soft surface.
I found this, but it's dated 1984: https://www.amazon.com/Drive-complete-rallycross-Foulis-motoring/dp/0854293264
The surface here is a flat parking area with very small gravel over somewhat hard packed dirt. It is rutted (from rain runoff) and gets more so as the day goes on. It usually gets “raked / dragged” during the noon break and sometimes more often.
I plan on keeping the car (2000 S’cort ZX2 S/R) stock – except for wheels/tires.
Re tire pressures: what do y’all typically run?
Re camber: what do y’all typically run?
stuart in mn said:I found this, but it's dated 1984: https://www.amazon.com/Drive-complete-rallycross-Foulis-motoring/dp/0854293264
I saw that but there is no description as to whether it is about the sport or driving or car set up. And it would be a bit dated too. Thank you
Seems to me there's probably some good info in the Staniforth books for you. Not pure rallycross, but he doesn't write about pure track racers either. It's out of print, but if you can find a copy of the Race and Rally Car Sourcebook it's top quality stuff. Mine's the 2002 printing, I don't know how much they were updated.
L5wolvesf said:The surface here is a flat parking area with very small gravel over somewhat hard packed dirt. It is rutted (from rain runoff) and gets more so as the day goes on. It usually gets “raked / dragged” during the noon break and sometimes more often.
I plan on keeping the car (2000 S’cort ZX2 S/R) stock – except for wheels/tires.
Re tire pressures: what do y’all typically run?
Re camber: what do y’all typically run?
Camber: stock, is that even adjustable?
Tire pressure: as low as you can get away with, you have to figure out what exactly that is
camber means nothing, toe means very little.
low tire pressures are Bad if you have low power. For reference it felt like my Golf's top speed on rally tires at 24psi was about 50mph. Lots of rolling resistance. After that I kept rally tires aired up to 35ish.
reply to: Keith Tanner
some good info could be worth $12 so I grabbed it. Thank you
reply to: dps214
Yes, Camber is adjustable with eccentric camber bolts, front and rear.
reply to: Pete
Camber means nothing and toe means very little? Please explain.
In reply to L5wolvesf :
between body roll and surface irregularity, and if you are on rally tires the nature of them, camber does not mean much as long as it is not crazy far away from zero. likewise the steering inputs tend to be fairly exaggerated so as long as toe is not wildly out of whack it is okay. no sense measuring with a micrometer when we are cutting with an axe.
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