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Old 03-27-2012, 01:46 AM   #83
fatoni
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Quote:
Originally Posted by Want.FR-S View Post
Sorry I am late in the game, but as I posted in another thread,
http://www.ft86club.com/forums/showp...&postcount=263, lowering COG has some effect to the weight transfer. Not really much. Using the BRZ/FR-S as an example, roughly speaking, if raising the COG by 50 mm (about 2 inch), the increase in weight transfer under 1.00 G braking (to the front) is about 54 lb out of 388.2 lb, compared with 334.5 lb with the current 450 mm COG. This is considering the whole car, not per wheel.

I am not sure the typical spring rate is for any given car. 500lb/in? This is the number I got from Wiki. Can someone enlighten me on this?

The formula is described in many places. But the thing is, the weight transfer is proportional to the height of COG, and weight, but inverse proportional to the wheelbase. If you want to reduce weight transfer: lower weight, lower COG or increase wheelbase and you can achieve the goal. However, it all depends on where you did to see how much effect it can be.
depends on the type of suspension and how inboard the spring is. then there are some cars that kind of cheat in order to be cheap. many cars are designed to ride on the bumpstops while hard cornering. that way the rates can be soft enough to be comfortable but then the car can dig in once things have settled in the turn
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