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Weight and stability
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Source：Internet Author：Unknow Pubdate：2010-02-19
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426486 (Agricultural)
9 Jan 10 11:53
If you have two exactly the same cars, the only difference between them is their weight. One is heavier and the other one is lighter, which one of them will be more stable on the road?
Now in this question the only thing that is important is the weight of the car so please answer only that. This question is about an ordinary road car, not a race car.
I hope you understand the question because I dont speak english very well.
Ive been having a discussion with one of my friends about this matter and trying to explain to him why is a heavier car more stable on the road and on the curves but I decided to ask you because Im sure you can explain it better.
Thank you in advance
evelrod (Automotive)
9 Jan 10 13:30
ALL other things being equal, the heavier car will FEEL more stable in most ordinary street driving. That is an illusion since the extra weight will put a bigger strain on everything...engine, brakes, tires, etc. It will also make the cornering ability of the chassis less at extremes. However, driven within it's limits, a heavier car will often feel like it is equal to the lighter one. 字串3
Rod
CapriRacer (Mechanical)
10 Jan 10 8:07
In some respects this is a bogus question.
If the vehicles are different weights - and designed that way - then there will be things that will also be different just because the weight is different. Tire size and inflation pressure will be one of those things.
But since this is a theoretical inquiry - a thought experiment - let's assume that these things have been adjusted for and you can neglect the differences.
I think the question revolves around inertia. When driving in a straight line, the heavier car will tend to resist extraneous input more.
However, when cornering, the inertia becomes detrimental.
One of the peculiar things I've noticed - and Rod touched on it - is that many folks confuse what their butt feels with the actual grip of the car. In particular, if a car doesn't take much steering input to change direction, they interpret that as more grip. Needless to say, there are things that can be done to make this happen without altering the actual grip.
字串2
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