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Thread: MAth question please
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05-22-2006 #1
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MAth question please
I keep hearing that the rear piston should be 40 -60% smaller than the front piston. Is this correct?
So taking my 2.8" front piston 3.14x2.8= 8.792
So for 50% of 8.792 would obviously be 4.396 Then to find the Diameter of that would be 4.396/3.14= 1.4"
Correct so far? It dont seem right. 1.4 is 1/2 the dia. but in my mind that cant be 1/2 the area...
Help Im mathmaticly retarded.
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05-22-2006 #2
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math sucks
Area is pi*r^2
Assuming 2.8” is diameter then 1.4 is radius
Area =3.14*1.4*1.4=6.1544 square inches
Half would be 6.1544/2=3.0772
New radius=square root of (area/pi)
3.0772/3.14=r^2
radius=.99 diameter= 2inches
i hope...lol
05-23-2006 #3
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Much better math.
Nick R.
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06-21-2006 #4
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Yes, you need to do the area calculation, not circumference for this application.
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