Re: IML: Question about harmonic damper

["rob van der Es" <r.vdes@xxxxxxxxxxxxxxx>]

Allright Dave,

You have convinced me :) I will go for the stock version then, cause this
one looks like an exact replica of the one that was bolted 47 years ago to
the crank.

Robert



Op Di, 9 januari, 2007 10:35 pm, schreef sosmi@xxxxxxxxxxx:
> Rob thats quite true, but the race engine has engine harmonics that the
> normal engine will never see. The damper really helps to take the sudden
> shocks of combustion, and take some of the natural vibrations of the
> engine, and dampen them, this prevents crankshaft breakage, and prolongs
> bearing life. After all that, the stock damper is all you need.I'm having
> a nice day thanks, Dave.
>
> -------------- Original message --------------
> From: "rob van der Es" <r.vdes@xxxxxxxxxxxxxxx>
>
>
>> Thanks Dave,
>>
>>
>> But apart from the fact that a standard damper is good enough when it
>> comes to max rpm, what about the fact that a fluid damper works on a
>> much broader rmp range (thus damping vibrations within a much broader
>> range, rubber dampers are "tuned" for a specific range) ?
>>
>> Have a nice day too,
>>
>>
>> Robert
>>
>>
>>
>> Op Di, 9 januari, 2007 4:55 pm, schreef sosmi@xxxxxxxxxxx:
>>
>>> The SFI approved dampers, are for high rpm race type
>>> applications.They are less likely to slip from high speed shifts, and
>>> are considered explosion proof . They work fine on a standard
>>> production engine, but it's a bit over-kill. The standard $65-85
>>> damper is all you need, lets face it the standard damper has lasted
>>> this long.Ya'll have a nice day, Dave.
>>> -------------- Original message --------------
>>> From: "Rob van der Es"
>>>
>>>
>>>
>>>> Hi,
>>>>
>>>>
>>>>
>>>> In addition to my earlier message of yesterday with regard to my
>>>> request for information I would like to add this link:
>>>>
>>>>
>>>> www.440source.com/dampers.htm
>>>>
>>>> The first damper on this page is a stock damper (allthough it is
>>>> SFI
>>>> approved..) and the second one is a fluid damper (just like
>>>> Fluidampr is
>>>> selling for almost three times as much). So I think I will choose
>>>> one of those two.
>>>>
>>>> Can anyone explain to me (Dick B. or Paul W. maybe ?) what the
>>>> benefits are of a fluid damper. I have been told that a fluid damper
>>>> is working better at a broader rpm range than a standard elastomer
>>>> (rubber) damper.
>>>> Is this true, and will it
>>>> do my engine and bearings good because they suffer less from
>>>> harmonics?
>>>>
>>>> Thanks in advance for your help,
>>>>
>>>>
>>>>
>>>> Robert van der Es
>>>> 1960 Imperial Crown Hardtop
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> Op Ma, 8 januari, 2007 4:47 pm, schreef Rob van der Es:
>>>>
>>>>
>>>>> Hello gang!,
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> First of all I would like to wish y'all a Happy New Year.
>>>>> To start my new Imperial year the right way, I am preparing my
>>>>> 1960
>>>>> Imperial for the coming riding season (that will be the end of
>>>>> April
>>>>> then, considering the climate overhere).
>>>>>
>>>>> One of the things I would like to replace is the harmonic damper
>>>>> (sometimes called a balancer but that ain't the right word for it,
>>>>>  since the cranckshaft of our 413's is internally balanced). I
>>>>> think the outer ring of mine has slipped over the years, resulting
>>>>> in an incorrect timing mark. I also think that since the ring was
>>>>> able to slip the rubber between the inner and outer ring is
>>>>> malfunctioning.
>>>>>
>>>>>
>>>>> So I am looking for a new one. Now my question: should I go for a
>>>>>  normal replacement damper (with rubber elastomer inside) or
>>>>> should I go for a
>>>> high tech fluid damper?? I have been told that fluid dampers are
>>>> much better
>>>>> for a long engine life (read crankshaft and bearing life) since
>>>>> they are
>>>> able to absorp harmonics over a wider rpm range.
>>>>>
>>>>> Any thoughts?
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Thanks,
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Robert
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
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>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>>
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>>
>>
>>
>>
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