Hey guys i need some equations. I need one to figure out HP. i know theres a way w/o the dynos by using your sepcs right? and then i need a way to geusstamate TOP speed. Thanks guys!! doing this for a school prject any help would be gr8. or if you have aby other cool equations that would be cool

 

I don't know about any of the crazy formulas that you are asking for, but maybe this one to figure out displacement will help- (R devided by 2) squared X pie X stroke= dissplacemet. R=radious and pie=3.14

250R example=

Radious(6.6cm) devided by 2= 3.3
3.3cm squared=10.89
10.89 times pie(3.14)= 34.1946
34.1946 times stroke(7.2cm)=246.20112cc

Just put your quads radious and stroke in the proper places and you will get the cc's

Maybe you can use this formula.

 

im soo sick and tired of freaking equations. if i have to write another freaking one, im gonna kill myself!

 

The OLD way of figuring hp based on displacement (from prior to the 30's) is no longer used. The best way to fgure hp without a dyno, is to use your timeslip from a dragstip. Go to www.acceleratedmotion.com for this equation.

To figure topend. First you must find the ratio of sixth gear in your blaster. The find the ratio of front to rear sprockets and the rear tire size. Take the max engine rpm divided by the ratio of sixth gear. Then multiply this number by the front sprocket size. Divide this number by rear sprocket size. This is the number of times the rear axle turns per minute. Multiply it by 60 to get turns per hour. This is "A"

Now find the circumference of the tire. Take the height time 3.14 to find the circumference. Divide this number by 12 to get #of feet. This is "B".

Multiply A by B and then divide by 5280 (number of feet per mile) to find mph. Its that simple[img]i/expressions/face-icon-small-smile.gif[/img].

It took me an hour to type this due to interuptions, so if someone posted this ahead of me, disregard.