<VV> Harmonic Balancer / Solid Pulley on 140

[BobHelt at aol.com]

In a message dated 6/12/2011 9:00:33 A.M. US Mountain Standard Time,  
rsampson at kc.rr.com writes:

I'd only  use on an engine that's been balanced with the rest of the engine 
 components
 
>From what I have been reading here it would appear that nobody  understands 
the function of an Harmonic Balancer. Probably that is because there  are 
NO HARMONICS involved here and also that there is NO  BALANCING going on with 
the harmonic balancer.
 
This device that mounts on the back end of the crankshaft and replaces the  
pulley really is a TORSIONAL DAMPER. It reacts to the twisting of the 
crankshaft  caused by the piston impulses and dampens them. And when these 
impulses occur at  the crankshaft's natural frequency they build up into a force 
that fractures the  crankshaft. After many of these occurances the fractures 
grow to cracks and then  breakage. By dampening these impulses the 
crankshaft is preserved.
 
Regards,
Bob Helt