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Re: [ST] 190 on rear



On Tue, 17 Dec 2002, Colt4530 wrote:

> Actually, the answer to both is, "yes, that's correct."
>
> A top Fuel dragster runs 6 to maybe 15 psi in the rear and 
> probably 75 psi in the front. The weight distribution is no 
> where near 50/50, so it works. One reason a T.F. dragster is so 
> long is to move the weight off of the front tires. The small 
> high pressure tires have very low rolling resistance. If the 
> bicycle tire and the monster truck tire were inflated to 30 psi 
> each and loaded with the same weight, the contact patch would 
> be identical, barring something unusual in the construction of 
> the truck tire.
>
> The loaded with the same weight seems to be the hang up. 
> Remember, pounds divided by psi = inches.

Is this flame bait? It sure does smell in here. My truck tires
are kept at 32 PSI, and my front bike tire is close at 34-36,
I can guarantee that the truck tires have much larger contact
patches.

As far as the TF dragster, we won't even get into the dynamics 
of those vehicles, the length is a combination of many factors, 
I would GUESS that one of the main factors is that they want to 
put as long of a lever on as little down force(ie. drag) as 
possible. As well, a longer vehicle is going to be more stable 
at 325 MPH. I am still completely amazed at how they keep the 
front end down on those cars!

t.


/*************************************************************
 Thomas Emberson, Dallas, TX
 '00 Yamaha WR400F (self abuse in style)
 '01 Suzuki TL1000s
 '03 Yamaha FJR1300

 sold: '98 ZX6e, '99 ZX9r, '95 EX500
 killed by rocks: '01 BRG Sprint ST (18 months old, 25,152 miles)
*************************************************************/


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