Thread: Balance shaft ?
10-30-2011, 04:56 AM #1
- Join Date
- Mar 2011
- New Zealand
Balance shaft ?
Is the balance shaft really needed on a xp 951 ? It's just more weight to turn to limit performance isn't it ?
anyone run with balance shaft removed ? first two stroke i've had with a balance shaft
10-30-2011, 07:23 AM #2
Yes have run without it but I wouldn't do it again.They do work rather well.Didn't notice any gain in throttle response as they dont need a lot of effort to get them spinning as they have a very small centrifugal weight displacement.The engine felt very buzzy and I wouldn't rev it into the 7k for too long as it felt like when you misaligned the balancer shaft to the crank by 1 tooth. Just doesn't feel its going to hang together for too long
10-30-2011, 10:44 AM #3
The balance shaft is necessary to help reduce the harmonics of the moving parts and counterweights of the crankshaft at a minimum.
a balance shaft is an eccentric weighted shaft which offsets vibrations in engine designs that are not inherently balanced.
Here is good info to read on about balance shafts.
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