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Nr750....how Much!


marky g
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It's a common feature on a Sherco

Ah, yes, and just about any two-stroke Trials bike today.

From what engineers have told me, modern two-stroke pistons have cam-ground diameters and tapered sides

to cope with the unusual temperature extremes (hot exhaust on one side and cool intake on the other, as opposed

to the generally uniform temp ranges in a four-stroke piston). When they reach operating temperatures, they expand

to the basically consistant circular diameter and straight sided shape we would expect.

Jon

ps. And, no matter how much I whine, cry, complain and throw myself on the floor, the wife says no NR......

Edited by JSE
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