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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
balance a 2 stroke motor
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[QUOTE="jaguar, post: 1474335, member: 19340"] I know this is an old post but I want to add to it. Yes a balanced 2 stroke is smooth only around its resonant RPM which should probably be around its peak power RPM. Yes you can use a fancy trial and error method but I prefer to measure/weigh all the parts and enter them into an inexpensive crank balance calculator to see its current balance/imbalance all thru the RPM range and then make virtual changes until the graph is best. Then implement those changes on the crank. To read more go to [URL="http://www.dragonfly75.com/moto/vibes.html"]How to Balance the Engine for less Vibration and More Top RPM[/URL] [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
balance a 2 stroke motor
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