math December 11, 2011 02:17AM
How do you figure out your wheel speed from your final drive? Thanks
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Re: math December 11, 2011 02:37AM
In the 3X3 turbo with the chemistry induced H2O class they have Snoop stand at the 150' mark and count how many times he see's Firestone Firestone Firestone in a certain amount of footage then he does his calculations and usually can get it within a mph or two.Grinning



this post was for entertainment purposes only,.....................Merry Christmas pullers!
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Re: math December 11, 2011 08:12AM
Quote
sf fan
In the 3X3 turbo with the chemistry induced H2O class they have Snoop stand at the 150' mark and count how many times he see's Firestone Firestone Firestone in a certain amount of footage then he does his calculations and usually can get it within a mph or two.Grinning

This is way too funny, However

I thought you took the diameter of the rear axle and mulitplied it by the height of the exhaust plume X2??



Edited 1 time(s). Last edit at 12/11/2011 08:30AM by gonzo 1066.
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Re: math December 11, 2011 09:19AM
Engine RPM X 60 / Total Gear Reduction X Circumference (in inches) / 12 / 5280 = MPH
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Re: math December 11, 2011 04:25PM
I get FIRESTONE to the sixth power.whatever that means.
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Re: math December 12, 2011 04:03PM
For some reason I cant get it to come out my final drive is 25 to 1 with 61 inch tall tire at 8500 rpm thanks
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Re: math December 12, 2011 04:48PM
If my math is correct 8500 rpm=61.67mph
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Re: math December 12, 2011 11:43PM
Snoops good,....... but I don't even think he can count Firestone Firestone Firestone @ 61.67mph !Eye Popping
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Re: math December 13, 2011 01:49AM
Break it down a little more to make it easier to find mistakes.

8500 eng rpm / 25 = 340 axle rpm

61" tire height * 3.14159 = 191.6" tire circumference

340 rpm * 191.6" = 65,144 inches/minute

(65,144 ipm * 60) / (12 * 5280)
(3908640 iph) / (63360)
= 61.69 mph

Those kids that said they'd never use this crap in math class didn't ever plan on tractor pulling.
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Re: math December 13, 2011 05:32AM
How do you find out your tire height exactly?
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Re: math December 13, 2011 07:34AM
TIRE HEIGHT AND CIRCUMFERENCE WILL BE DIRECTLY PROPORTIONAL TO THE PSI CONTAINED WITHIN THE VESSEL........WHICH WOULD BE INVERSELY PROPORTIONALY OPPOSITE TO VOLUMETRIC EFFICIENCY.
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Re: math December 13, 2011 08:44PM
If ya can't figure the height of it, lay the tire down and measure the length of it. Or measure all the way around the center of the tire [circumference] and divide by 3.14.
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