Author Topic: formula for calculationg CC's  (Read 3963 times)

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Offline Hoony

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formula for calculationg CC's
« on: November 15, 2007, 04:37:19 pm »
ok guys who can tell me the formula for calculation Cubic Capacity.

i know it has pie , bore and stroke in it?

is it bore X pie squared x stroke ?
Long time Honda Fan, but all bike nut in general, Big Bore 2 stroke fan.    http://www.youtube.com/watch?v=XJoKP6MawYI
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Re: formula for calculationg CC's
« Reply #1 on: November 15, 2007, 04:52:57 pm »
Hooney , try radius x radius x pie x stroke x number of zylinders . that has worked so far.

Offline Hoony

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Re: formula for calculationg CC's
« Reply #2 on: November 15, 2007, 05:32:03 pm »
Thanks Walter, thats works fine.
Long time Honda Fan, but all bike nut in general, Big Bore 2 stroke fan.    http://www.youtube.com/watch?v=XJoKP6MawYI
1985 Honda CR500RF "Big Red"
1986 Honda CR250RG
2005 KTM 300EXC "The GruntMeister" ( I love that engine)

Offline jake57

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Re: formula for calculationg CC's
« Reply #3 on: November 15, 2007, 05:47:08 pm »
hooney , this is how MA calculates CC.
12.4.1 Reciprocating Engines:
Cubic capacity = (D2 x 3.1416 x C x N)
4
Where:
• D = Bore in centimetres,
• C = Stroke in centimetres,
• N = Number of cylinders

Offline LWC82PE

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Re: formula for calculationg CC's
« Reply #4 on: November 15, 2007, 06:29:10 pm »
there are at least 2 ways to do it. one is simple and one is complicated but gives the same answers.

i use pie X radius squared X stroke. then divide that by 100 or 1000 (what ever gets the decimal point moved over to the right spot, i cant remember) this is for one cylinder only
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Offline cyclegod

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Re: formula for calculationg CC's
« Reply #5 on: November 15, 2007, 06:56:18 pm »
there are at least 2 ways to do it. one is simple and one is complicated but gives the same answers.

i use pie X radius squared X stroke. then divide that by 100 or 1000 (what ever gets the decimal point moved over to the right spot, i cant remember) this is for one cylinder only

100 if using cm's or 1000 if using mm's
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oldfart

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Re: formula for calculationg CC's
« Reply #6 on: November 15, 2007, 08:20:27 pm »
Hoony   and another way      D x D x Stroke x .7854    = cc


Offline Tim754

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Re: formula for calculationg CC's
« Reply #7 on: November 15, 2007, 08:58:26 pm »
All Good and are spot on!!  ................now calculate any bloody Rotary!!!!!!!!!!!!!!!!!!! ::)
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Offline Hoony

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Re: formula for calculationg CC's
« Reply #8 on: November 15, 2007, 09:30:18 pm »
Thanks Guys, Very Much Appreciated.

 :)
Long time Honda Fan, but all bike nut in general, Big Bore 2 stroke fan.    http://www.youtube.com/watch?v=XJoKP6MawYI
1985 Honda CR500RF "Big Red"
1986 Honda CR250RG
2005 KTM 300EXC "The GruntMeister" ( I love that engine)

Offline yzhilly

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Re: formula for calculationg CC's
« Reply #9 on: November 16, 2007, 09:15:42 am »
I look at the sticker on the side ?
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Offline Hoony

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Re: formula for calculationg CC's
« Reply #10 on: November 16, 2007, 01:03:38 pm »
Cheeky !
Long time Honda Fan, but all bike nut in general, Big Bore 2 stroke fan.    http://www.youtube.com/watch?v=XJoKP6MawYI
1985 Honda CR500RF "Big Red"
1986 Honda CR250RG
2005 KTM 300EXC "The GruntMeister" ( I love that engine)