Quick Math Lesson - Chicagoland Sportbikes
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post #1 of 41 (permalink) Old 05-03-2004, 08:54 AM
Grasshopper
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Quick Math Lesson

A mile is 5280 feet

5280' X 120mph = 633600

633600/60 minutes = 10560

10560/60 seconds = 176 feet per second

At 120 mph you are moving 176 feet per second....WOW

Just a different perspective to look at speed
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post #2 of 41 (permalink) Old 05-03-2004, 09:15 PM
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Re: Quick Math Lesson

Quote:
Originally posted by Grasshopper
A mile is 5280 feet

5280' X 120mph = 633600

633600/60 minutes = 10560

10560/60 seconds = 176 feet per second

At 120 mph you are moving 176 feet per second....WOW

Just a different perspective to look at speed

And to really boggle the mind....


At 120mph you are moving 2112 inches per second.

And 5364.48 cm/sec.D

I'm not crazy, my mother had me tested.

Last edited by YZFRob; 05-03-2004 at 09:18 PM.
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post #3 of 41 (permalink) Old 05-03-2004, 09:48 PM
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Now do that for 194 MPH which is th fastest I ever went on my Busa, Ummm I mean Kelly's Busa




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post #4 of 41 (permalink) Old 05-03-2004, 10:15 PM
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194mph

284.53 feet/sec

3414.36 inches/sec

8672.47 cm/sec.

D

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post #5 of 41 (permalink) Old 05-03-2004, 10:19 PM
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yeah but how many times is the rear tire spinning per mile at 194 miles per hour?

how bout that for math. .

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post #6 of 41 (permalink) Old 05-03-2004, 10:36 PM
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Quote:
Originally posted by YZFRob
194mph

284.53 feet/sec

D
That's a football field a second!

Last edited by whiteSeatEnvy; 05-03-2004 at 10:42 PM.
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post #7 of 41 (permalink) Old 05-04-2004, 01:17 AM
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1+1=4


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post #8 of 41 (permalink) Old 05-04-2004, 03:11 AM
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post #9 of 41 (permalink) Old 05-04-2004, 04:09 AM
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post #10 of 41 (permalink) Old 05-04-2004, 04:34 AM
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Quote:
Originally posted by JohnnyBoy
yeah but how many times is the rear tire spinning per mile at 194 miles per hour?

how bout that for math. .
Missing info here, how big is the tire? 16", 16.5", or 17"? Not that I plan on calculating this now anyway, it's 4:30am, I can't sleep, and don't feel like figuring it out right now. But I'm sure someone will you just need to be a little bit more specific....
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post #11 of 41 (permalink) Old 05-04-2004, 06:19 AM
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post #12 of 41 (permalink) Old 05-04-2004, 07:40 AM
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post #13 of 41 (permalink) Old 05-04-2004, 07:47 AM
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what you guys a bunch of math nerds LOL

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post #14 of 41 (permalink) Old 05-04-2004, 08:34 AM
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Quote:
Originally posted by YZFRob
194mph

284.53 feet/sec

3414.36 inches/sec

8672.47 cm/sec.

D
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post #15 of 41 (permalink) Old 05-04-2004, 08:37 AM
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Hmmmm, how would you calculate how many times per second a 17" wheel is spinning at a certain speed (MPH)?

I'm going to have to figure this one out.

Rob, help me out here!

post #16 of 41 (permalink) Old 05-04-2004, 07:28 PM
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Quote:
Originally posted by Grasshopper
Hmmmm, how would you calculate how many times per second a 17" wheel is spinning at a certain speed (MPH)?

I'm going to have to figure this one out.

Rob, help me out here!


Find the circumfrence of the tire and divide that by the in/per sec. If you want it in feet, then you will need to divide that number by 12.

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post #17 of 41 (permalink) Old 05-04-2004, 07:33 PM
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Don't forget that tires expand with heat!

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post #18 of 41 (permalink) Old 05-04-2004, 07:38 PM
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Quote:
Originally posted by Kiecker
Don't forget that tires expand with heat!

They also expand with speed. But lets not confuse Nick too much.

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post #19 of 41 (permalink) Old 05-04-2004, 07:40 PM
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Quote:
Originally posted by YZFRob
194mph

284.53 feet/sec

3414.36 inches/sec

8672.47 cm/sec.

D
Or my personal favorite....

.1577 Mach.
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post #20 of 41 (permalink) Old 05-04-2004, 07:41 PM
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Quote:
Originally posted by YZFRob
They also expand with speed. But lets not confuse Nick too much.
Wouldn't speed actually be the source of heat though
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post #21 of 41 (permalink) Old 05-04-2004, 07:48 PM
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Quote:
Originally posted by Kiecker
Wouldn't speed actually be the source of heat though

THeres alot of factors to toss in. Cant get to elaborate, Nicks crayon will melt.D

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post #22 of 41 (permalink) Old 05-04-2004, 07:55 PM
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Motorcycle tires don't expand much. Since the Daytona tire fiasco, manufacturers, specificly Michelin, have calculated tire growth at speed is less than 3%. Have fun factoring that in.

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post #23 of 41 (permalink) Old 05-04-2004, 07:59 PM
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Tire expansion wouldn't be much neither should deflection, or deformation, but it does occur.....just something to point out that's all.

So how's it coming Nick?
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post #24 of 41 (permalink) Old 05-05-2004, 04:12 PM
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17" rims equals approx 22" in diameter including the tire peak to peak. The circumference of the tire is then equal to 138 inches. Distance traveled at 194mph in one second is 3414.36 inches, therefore the wheel is spinning at approx 25 revolutions per second.

Just my two cents.

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post #25 of 41 (permalink) Old 05-05-2004, 04:19 PM
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post #26 of 41 (permalink) Old 05-05-2004, 04:22 PM
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post #27 of 41 (permalink) Old 05-05-2004, 04:38 PM
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Hey, I am not a nerd, just a guy that loves math,

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post #28 of 41 (permalink) Old 05-05-2004, 04:44 PM
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Quote:
Originally posted by RSVMillenian
Hey, I am not a nerd, just a guy that loves math,
BTW! Welcome to the board!!


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post #29 of 41 (permalink) Old 05-05-2004, 04:44 PM
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you guys are taking this too far. you can figure it out using only the velocity of the bike, 194mph. thats 3.233 miles per minute, or .05388 miles per second. At 5280 feet in a mile that works out to 284.533 feet per second. Right back where we started. Dont over think it, tire size or diameter doenst mean shit in this equation.

Chris
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post #30 of 41 (permalink) Old 05-05-2004, 04:47 PM
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It does if he wanted to know how many revolutions a rim makes


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