balancer shaft on cagiva mito

[steven_191]

i know its there to balance the weight of the crank and piston and rod but is there any reason it cant be balance like on a 4stroke engine.

instead of the crank being round like in the mito engine they are more like a cheese wedge. the weight is removed from the side of the connecting rod therefore no need for a balancer, which sucks out some power.


anyone done it before?

[hmmmnz]

[Kickstart]

Hi

Not sure on reducing crankcase volume. It could be done easily with light plastic stuffers if required, and reducing the crankcase volume to increase the crankcase compression is meant to give a peaky power delivery with plenty of the mixture going straight out of the exhaust.

Balance shaft does absorb a tiny bit of power, but you make that up in lack of vibration which enables you to make everything else lighter. Race use they might take out the balance shaft, but then the bike is less likely to do enough miles for the vibration to be that much of a major problem.

Plenty of 4 strokes use balance shafts.

All the best

Keith
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[steven_191]

good point about the crankcase volume, but that can be countered by filling the casing the right amount with weld or something to get back to the required volume.

i know alot of 4 strokes have the balancer but they can easily be removed and then have the crank balanced to suit.

as for lightening the flywheel. it hardly weighs anything now. maybe get an ally one. although the teeth might get churned up by the starter.