Quote:
Originally Posted by BRENT in 10-uh-C
I'm pretty confident that all Mr. Kelley's balancer did was add weight to the center of the flywheel. The flywheel mass (-of any weight) cancels any affect of the flywheel mounted balancer when they are both mounted onto the same flange. If it were mounted onto the opposite end of the crankshaft where it could dampen the torsional pulsations of the crank, then it would do a lot of good.
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Brent,
I agree, it added weight and that was key in lowering the range of vibration. The same happend when a flywheel of approximate equal weight, that was solid...no balancer added, was tried.
The difference between the two was the range of vibration was much tighter and less in intensity to almost not noticeable. The mounted balancer appears to take the edge off the torsional pulse, when a cylinder fires or the maximum pressure is reached on the compression stroke. I now run that version of flywheel in my Phaeton.
I tested these varying flywheels with the engine on the dyno. By varying the load at the rpm the vibration was most evident, the vibration could be intensified and clearly observed. The battery of tests taught me how to better build and tune an engine. Again...some say fuzzy logic but the dyno and results don't lie.
I have tried one of Murray Horne's combination front pulley/dampers. It also helps lessen the observed harmonic slightly. I need to complete more tests on his product when I have time. Available time seems in short supply of late.
Hope you and family are doing well...Good Day!