Author Topic: 150cc Four stroke 3 cylinder  (Read 2496 times)

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Offline 660magnum

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Re: 150cc Four stroke 3 cylinder
« on: January 26, 2014, 06:57:43 pm »
That's because it has unevenly spaced firing. the uneven firing makes the engine sound a little like a Harley.

If you think about the fact that this is a four stroke, the uneven firing set up is probably the best way to approach dynamic balance?
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