<VV> Fwd: Harmonic Damper(Not balancer)

[shortle]

The only real life advantage of the inertia wheel over that of the harmonic balancer is that they never fail. (Only the crankshafts failed).
Timothy Shortle in Durango Colorado 81301
A believer in harmonic balancers on all my Corvairs


-----Original Message-----
>From: Ken Pepke <kenpepke at juno.com>
>Sent: Jun 13, 2011 12:57 PM
>To: Vair Views <virtualvairs at corvair.org>
>Subject: <VV> Fwd:  Harmonic Damper(Not balancer)
>
>
>
>> From: "Smitty" <vairologist at cox.net>
>> Date: June 13, 2011 11:54:44 AM EDT
>> To: <virtualvairs at corvair.org>
>> Subject: <VV> Harmonic Damper(Not balancer)
>> 
>> Smitty Says;  I don't know if is magic or not, but the 6th harmonic 
>> torsional  vibration of an Early crank is shown in the SAE papers as 
>> 4,300-4,400 rpm.
>
>As I am no longer employed in GM Engineering I no longer have ready access to the SAE papers so I will take your word for it.  And we have seen more broken early cranks than late.  That would be as expected because there were far more early models produced.  
>
>>> snip <<
>> 
>> Most of us and that includes you, are not qualified to say why they left the 
>> damper off of the Late 95 engines.  
>
>Granted I am not an authority but, I have been through the process enough times and I have been around long enough to know there are two primary reason for changes:  1.  To make things cheaper and 2.  To upgrade things that are not performing to corporate standards.  The first reason is exercised far more than the latter.  I am sure there will be nobody on this venue that will claim the inertia wheel / pulley is an improvement over the dampener nor will anyone claim the dampener is less expensive to manufacture.
>
>>> snip <<
>
>Like you said "I am putting dampers on all my Late engines."  Good idea ... and I would also.
>
>Ken P
>Wyandotte, MI
>Worry looks around; Sorry looks back, Faith looks up.
>
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