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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
balance a 2 stroke motor
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[QUOTE="cujet, post: 512522, member: 19501"] Keith, I have an ACES helicopter balancing set at work. A few years ago I used it to balance my '94 Husky 360WXC 2 stroke single. I was able to install 2 pickups (accelerometers) and measure IPS in X and Y axis. I added screws and bolts into threaded holes in the flywheel to change the balance. What I found is a 53% overbalance (balance factor) gave the best results. However, I was not able to make the engine smooth. I regularly read that a single can be balanced to smooth at a given RPM, (in my case 7K would be nice). This is absolutly false! What can be done with a single is to reduce the vibration in one plane (for insatnce inline with the cylinder) in exchange for more vibration in another plane (for instance fore-aft) Of course, there is a proper balance for any engine, if for some reason your engine is not properly balanced (quite rare) then a big gain is possible. Keep in mind that engine and chassis mass are involved in what you feel, and how you choose to balance the engine. Chris [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
balance a 2 stroke motor
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