On Sat, 13 Sep 1997 14:46:58 -0700 joe kleifges <hardchrome(at)netvalue.net>
writes:
>.
>> > for comparison, i hung and tapped, with the same hammer, 2
>camshafts.
>>
>> what about the construction of camshafts??? i got a REALLY dull
>"thuck" out of them, in complete contrast to the ring of the crank.
Apples to oranges.
Go klank your rods, they wont ring well either.[rods are forged]
Even the cast crank will ring a for a while.
The cam as would a cast crank, will have a high spring rate.
Steel is higher yet.
I do not know the metaurgical properties to which this relates.
The crank will model as a series of springs and individual masses.
The mass*spring rate form the resonance of the "bell".
The cam is all spring, and little mass.
It vibrates at a much higher frequency, and takes a ton of energy
to get it to resonate.
Lets get the crank question resolved, then we'll klank some
cams.
Jarrid
This archive was generated by hypermail 2b30 : Tue Sep 05 2000 - 09:56:13 CDT