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Quote:

Not if you're balancing to a light rod/piston assembly.


the absolute value to counterbalance is irrelevant. Whatever the number you determine to balance will result in the same rotational inertia regardless of diameter. If you want the weight on a smaller diameter you will add more of it!




Basically, it is much more efficient to cut down the overall diameter of the counterweights to eliminate the unneeded weight to balance rather than keep the overall diameter the same and drill them full of holes to reduce the weight.

The smaller radius will allow for faster accelleration as well as reduced windage. I believe it will also reduce the stress/flex the crank experiences.

Last edited by Locomotion; 01/18/12 10:29 PM.