Didn't know there's so much body. Already maxed out on the track pack. I dont really feel the body roll affects much on performance but it sure looks awkward.
opcorn:
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Body roll per se, no; but if you lean over a tire it does not grip as well. That's especially true for slicks. You can dial in static negative camber to compensate, but that can affect braking.Body roll BY ITSELF doesn't make any difference in lap times.
True, though with the stock alignment settings, you WANT some body roll to compress the suspension and change the camber angle of the loaded tire.Body roll per se, no; but if you lean over a tire it does not grip as well. That's especially true for slicks. You can dial in static negative camber to compensate, but that can affect braking.
Exactly. We shouldn't be second-guessing the world's best automotive suspension design firm.I read somewhere that Lotus' engineers wanted it that way. I can't remember where I saw it though.
Excessive body lean, such as in the picture at the beginning of this thread, most definetly affects lap times in a negative manner. That is why practically any race car you see doesn't exibit it! Suspension engineers work tiresly to eliminiate it.Body roll BY ITSELF doesn't make any difference in lap times.
In his books Carroll Smith discusses this issue at length. He says that you want the car as softly sprung as you can have it while still meeting the criteria of not hitting the bump stops or reaching amounts of travel that are undesirable for reasons of bad camber curves.
He says that springing a car any higher than is required to meet those criteria actually makes the car slower assuming there are any imperfections on the track, and of course assuming you know how to set up your damping characteristics properly.
I personally found that a bit stiffer springs did help me go faster. But it wasn't because they made the car faster. It's just because they gave me a bit more confidence in the feel so I began to push harder.
xtn
Q: Are you the instructor in the driver seat giving a ride? Or are you the student with an instructor in the passenger seat? What is your experience level?Interesting, It doesn't feel like its taking away my speed at all Down at Corner 3 Mosport. Has anyone fitted rear sway bars? Stiffer springs would need a re valve job correct? Don't want to spend a fortune one a new set of suspension. :nanner2:
Body roll BY ITSELF doesn't make any difference in lap times.
In his books Carroll Smith discusses this issue at length. He says that you want the car as softly sprung as you can have it while still meeting the criteria of not hitting the bump stops or reaching amounts of travel that are undesirable for reasons of bad camber curves.
He says that springing a car any higher than is required to meet those criteria actually makes the car slower assuming there are any imperfections on the track, and of course assuming you know how to set up your damping characteristics properly.
I personally found that a bit stiffer springs did help me go faster. But it wasn't because they made the car faster. It's just because they gave me a bit more confidence in the feel so I began to push harder.
xtn
It's in his sig, he has Nitron SA coilovers. They come with 425/550 lb/in springs standard, or 525/650 lb/in springs as Nitron Sport Pro: Nitron Sport PRO Suspension - Sector111 - Tasty Bits for the Elise and ExigeXTN where did you purchases stiffer springs? Did it affect your rebound a whole lot?
Doesn't need to be static camber. Can be dynamic camber gain. It's all a balancing act between effects under different variables; like under braking as you mentioned.Body roll per se, no; but if you lean over a tire it does not grip as well. That's especially true for slicks. You can dial in static negative camber to compensate, but that can affect braking.