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Old 11-29-2012, 11:16 PM   #51
vicious_fishes
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2003 GD w/EZ30D swap

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Originally Posted by stevenkelby View Post
Apologies, hope you're feeling better
neg feel worse lol. have man-flu. special kind of extra bad flu only men can get
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Old 11-30-2012, 01:49 AM   #52
stevenkelby
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Sorry to hear it, get better soon!

Steve.
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Old 11-30-2012, 03:22 PM   #53
AndyRoo
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A real chassis engineer seems to think the roll center is still relevant. motoiq just published this:

http://www.motoiq.com/magazine_artic...ll-center.aspx
I still don't understand where the idea of a "front" and "rear" COG came from though. There is one COG.

- Andrew
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Old 12-07-2012, 11:59 AM   #54
EarlQHan
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A real chassis engineer seems to think the roll center is still relevant. motoiq just published this:

http://www.motoiq.com/magazine_artic...ll-center.aspx
I read that article and saw that as well. I think MotoIQ is a great site, but it's made for those who are interested in learning more about the engineering side of tuning, not for actual engineers. It's an introductory tool, therefore I think it's explained from a basic standpoint. The KRC is a good visualization tool, but I would not use it to determine my suspension geometry.

Even in racing there are "engineers" who still haven't adapted to the 21st century. Rather than using math and science to get results, they use their gut feeling and experience, which may not be a bad thing since it's easy to get lost in the math and science. However, they use methods that are now out-of-date.

My prof has been on a Champ Car title winning team and is now a consultant for a MAJOR IndyCar team and he says the KRC is irrelevant and that the FBRC should be used, so I'm going to trust him on this one.
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