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Thread: Figuring CCs

  1. #11
    Team Member zul8tr's Avatar
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    Default formula

    Quote Originally Posted by Steve Litzell View Post
    Are you saying my formula is not correct???Bore X 2 is same as bore X bore. Both forulas are good. Roy's method is what I was taught many years ago when I had hair and was very young. My formula is also correct for both metric and American, and if you try it you will see that it is spot on. It is just more modern way that's all. Steve
    Bore x 2 does not equal Bore x Bore

    Ex Bore = 4 inches = diameter of cylindere

    4 inches x 2 = 8 inches
    4 inches x 4 inches = 16 square inches

    Area of circle = pi x R x R or in terms of diameter = D x D x pi/4
    R = radius
    D = diameter
    pi = 3.14 .........
    pi/4 = 0,7854 .....

  2. #12
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    Default Ok!

    Quote Originally Posted by zul8tr View Post
    Bore x 2 does not equal Bore x Bore

    Ex Bore = 4 inches = diameter of cylindere

    4 inches x 2 = 8 inches
    4 inches x 4 inches = 16 square inches

    Area of circle = pi x R x R or in terms of diameter = D x D x pi/4
    R = radius
    D = diameter
    pi = 3.14 .........
    pi/4 = 0,7854 .....
    Bore times 2 in my formula was ment to be BORE times BORE or Bore X 2 or example 54mm X 54 mm. I guess I should of said bore times itself. Yikes! Steve

  3. #13
    Sam Cullis Mark75H's Avatar
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    Default

    Yes, any math teacher will tell you bore x 2 and bore² are not the same thing
    Since 1925, about 150 different racing outboards have been made.


  4. #14
    Team Member zul8tr's Avatar
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    Default Bore x Bore

    Quote Originally Posted by Steve Litzell View Post
    Bore times 2 in my formula was ment to be BORE times BORE or Bore X 2 or example 54mm X 54 mm. I guess I should of said bore times itself. Yikes! Steve
    Explaination excepted. Equations are very definate in meaniing, words sometimes are not .

  5. #15
    modifiedoutboard OUTBOARDER's Avatar
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    Default congradulations

    3.14*((bore/2)^2))*stroke
    That's what it looks on my Excel spread sheet.
    Bore/2 = Radius.

    Avg Japanese math student places in top 5%
    In USA.

    Keep up the good work and at some point we will be able to discuss engine theory.
    ANTHONY McCULLOCH
    modifiedoutboard@hotmail.com

    Some things never change!

    They Want it cheap..............

  6. #16
    Team Member zul8tr's Avatar
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    Default displacement

    Quote Originally Posted by OUTBOARDER View Post
    3.14*((bore/2)^2))*stroke
    That's what it looks on my Excel spread sheet.
    Bore/2 = Radius.

    Avg Japanese math student places in top 5%
    In USA.

    Keep up the good work and at some point we will be able to discuss engine theory.
    Where is the number of cylinderes?

  7. #17
    modifiedoutboard OUTBOARDER's Avatar
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    Default depends

    Quote Originally Posted by zul8tr View Post
    Where is the number of cylinderes?
    Why do all have same number?
    ANTHONY McCULLOCH
    modifiedoutboard@hotmail.com

    Some things never change!

    They Want it cheap..............

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