<VV> Harmonic balancer

[BBRT]

John is referring to the primary modes of failure. The center hub can crack 
as well when the engine is engaged in heavy use such as racing.

Chuck S
----- Original Message ----- 
From: <jvhroberts at aol.com>
To: <cfmann at yahoo.com>; <virtualvairs at corvair.org>
Sent: Sunday, March 29, 2009 8:03 PM
Subject: Re: <VV> harmonic balancer


>
> It's an inertial damper used to absorb torsional oscillations of the 
> crankshaft. The damping medium is the rubber that bonds the pulley to the 
> hub. And yes, they do 'wear' out, usually by having the rubber ring start 
> to slip, throwing the timing marks off, and ultimately, coming off the hub 
> in a very ugly manner. And, sometimes, the seal land becomes too scored 
> for the seal to work, as the other mode of failure.
> The term 'balancer' is actually a misnomer.
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> -----Original Message-----
> From: chris mann <cfmann at yahoo.com>
> To: virtualvairs at corvair.org <virtualvairs at corvair.org>
> Sent: Sun, 29 Mar 2009 5:40 pm
> Subject: <VV> harmonic balancer
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> I know where it goes but am clueless about what it does. Why is it called 
> a
> harmonic balancer?
> And do they fail or where out?
> Chris mann
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