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250 Or 125


burns1989
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Yha i know but it doesn't say the cc any where just looked at the Web site and it doesn't show anything to check fram and engine numbers . Just got righting but nothing to state cc . Seems stupid to not have anything to say what it it

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Take the exhaust off and turn the engine until piston is at bottom dead centre.

Measure the vertical distance from the top edge of the piston to the cylinder head joint, I think it will be about 6.8 cm.

Measure the diameter of the piston. Suppose the diameter of the piston is 6.5 cm then

6.5 / 2 =3.25 3.25 x 3.25 = 10.56 capacity in cm3 is 10.56 x 3.14 x 6.8 = 225 cm3 the 3.14 is Pi, just use this number

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Hi thanks did that frame check and it sais it was made in 05 but the stickers show it's a 06 . I gues its preproduction ready for 06 market . How do I post a picture of it on here .Ok my front pipe has a seem all the way to the joint of the next joint of the exhaust .

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Well the power isue could just be me as im used to my mx bike rm 250 and that lays down the power Pritty hard at 50 brake but I gues a trials bike is less power but more torque. Or could it be down to how it's been geared down as 1st is all most like walking pace . Does any one know the standard sprocket sizes .chears ian

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As for posting a picture click on the More Reply Options next to where it says Post.then you can attach a picture or file.Burns think you been burnt.sorry couldn't resist.Your looking at £100+ for new casing and water pump.

Edited by bilks
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