I was too quick on that one - 12 hp (I was really going for motivation with this).

 

oh... you were serious?

i thought you were joking.

 

this thread is funnie

 

I looked at that sentence that FastD posted, first had me do a double take, and then I had the same exact expression on my face as your smiley does going..."WTF?...That's not the same answer I came up with?!!"

That was some funny stuff!!!

 

I think the weight is 4 fold when it comes to rotating mass.

Example: If you lose 18lbs. from a lighter wheel and tire combination, it's actually equivalent to about 72lbs.

Besides doing a Final Drive swap, I would say a set of light weight wheels is the best bang for the buck.

 

The weight on a rotating mass means more if it comes from the outer diameter rather than the inner or evenly. I've also heard that 4-to-1 rule of thumb. I think that does apply more to a wheel (with mass at the outer rim) than a flywheel (with mass evenly distributed).

 

I came across this topic while searching for reducing weight, only just noticed how old this thread is.
Maybe a simple idea to measure how quick you have become after reducing 300 lbs of your car is to compare the bhp per tonne to other cars.

For example a Honda NSX R has 228 bhp per tonne according to www.autosnout.com (http://www.autosnout.com/Car-Bhp-Per-Ton-List.php).
When you shave off 300 lbs off an Stock S2000 without doing anything to gain horsepower, you would also come close to this figure of 228 bhp per tonne.

Other cars in this area are:
Porsche 911 carrera 4
Audi RS4
Vauxhall monaro 6L V8
Merc SLK55 AMG

Quite interesting I have only researched this for about 10 mins, so maybe some people have time to check if it is correct what I just said lol.

 

A lot of assumptions here for sure..
hp isn't at peak.. all the time.. velocity and acceleration isn't the same.
power = m*a*x/t = m*a*v
so the power is ability to haul mass m at v speed with acceleration of a m/s^2.
So, hp/m = a*v.
Interesting.. that's why they were calculating hp/lbs all the time..
never done this before. haha.
Yeah +1 on diet = the greatest weight saving..

 

Definitely, plus you can get some wider rubber

 

I pulled up an 8 year old thread on this.

https://www.s2ki.com/s2000/topic/116...0/page__st__75