Engine Balancing

Curing the    H-D Rock & Roll Blues;

Engine Balancing a practical approach to vibration and balancing problems in the Harley-Davidson……In static balancing, only gravity or weight force is involved. For example. there are those who are into riding their M/C but have had to just put up with num legs, hands & replacing mirriors because of the shaking and all the vibrations. They have just had to accept and live with it even after some stactic balancing job they just paided for. But the only problem is - it is unpleasent to ride and dosen’t seem to go away no matter what engine RPM you ride. In all fairness S & S flywheels are individually stactically balanced and is not so bad but spin the rotating mass and all of a sudden you have unbalance, and a couple unbalance from left to right back and forth! Reason being that motionless balancing (static) . When the two static balanced flywheel halves are put together they will most likley have a couple & a force unbalance as it is spun into motion and this unbalance can be measured any where from 7-40 grams and could also appear at 2 or 3 different spots on the assembley during different rpm ranges This all happens do to the centrifugal force and as rpm goes up so does unbalance and were it occours. The use of strobe light and 30 years spin balancing expericiance can correct the unbalance at those aeras by means of  the triangle method and carefully removing the right amount of material.

Done Wrong!

The above picture shows just how not to do it right . These flywheel assembly need to have heavy tungten metal installed in the right place. removing this kind of material around the crank pin causes more flexing and and other damage as well. The other right side flywheel looked worst than this and had excessive run out.

 We also balance V-Rod-All Big Twin including early model Flathaeads 

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