I like to know if anyone know the formula for calulating cc of an engine? like bore,stroke = cc????? thanks in advance...

 

I believe it's the formula for volume of a cylinder. Pi*r2*h where r is radius (half bore diameter) and h is height (Stroke).

I may be missing something. Some one can check that.

 

You got it right Koop.

3.1416(Pi) times half of bore diameter squared times stroke all in inches for cubic inches or centimeters to get cc's.
Example 20mm bore x 20mm stroke=2cmx2cm. 1/2 bore=1, 1 times 1 is 1. 3.1416 times 1 is 3.1416. 3.1416 times 1 (stroke) is 3.1416CC. Bigger example 100mm bore 100mm stroke is 10cm by 10cm. half 10 is 5. 5 squared is 25. 25 times 3.1416 is 78.54. 78.54 times 10 (stroke) is 785.4cc.

 

You got it right Koopa. Another way is Pi x Diameter x Height of the stroke= CCs

 

Close moose but, I believe 2PiR will give the circumference of the piston but, not the area. Again, I'm not a mathematician but, I'm not sure if that formula will work.

My formula is pi r (squared). Not pi*r*2 which would be the same as Pi*Diameter*Height.

 

You're right Koopa. I messed it up. I didn't sleep last night. Back was acting up. Area of Circle X Height is the volume of a cylinder. Area of circle is Phi x (Radius-squared). Yep you got it.

 

Whoa, that's twice in one day! I'm enjoying this, it don't happen often!

 

Go ahead, blame Bush.