Subject: Re: vibration
Author: mjon-@yahoo.com
Date: Jul 18, 2003, 4:57 AM
Post ID: 1713818985
I think you overstated the case a bit, Pete.
Displacement is one factor in engine vibration, though
only one of many, as I understand it. Re: the boxer
(which you mention), for example, the R1200c has been
criticized for its engine vibration, and BMW's answer
is to the effect that �it's bigger then the other
boxers, and therefore vibrates more.� (Not a very
sophisticated answer, but as long as sales don't lag,
that's all that is important to some folks.)
Now regarding my question, as far as I know, the Ambo
engine and the latter larger engines have the same
vibration-quelling features: none, except the inherent
balance of a 90' engine and a relatively heavy crank
and flywheel. The later engines have less flywheel
mass, however. The point of my question was whether
other vibration-quelling measures were taken in the
development of the larger-displacement engines. I know
there are not counter-balancers nor rubberized motor
mounts, but was anything else done, and if not, is
there an increase in vibration? Guzziology implies
that Eldo's vibrate more then Ambo's and V700's do,
and the intense vibration of some recent sport models
is infamous.
I would really like to have an SP for when I ride with
my wife, but it is only a dream right now. Or perhaps
a Jackel with a better seat. Can anyone compare these
to my Ambo?
Regarding someone's comment that Guzzi should have
focused on the big bikes rather then investing in
development of the Breva, I'd like to point out that
Guzzi doesn't have any bikes that qualify as big by
today's standards. I think Guzzi has to wake up in
many ways if they want to stay in business!! It seems
to me that Guzzi has had and perhaps still has some
good engineers, but that management is not that strong
(I'm putting it mildly).
-Mike (69 Ambo)
Pete wrote:
�Engine vibration is not related to displacement, it
has to to with how the engine is designed to
counterbalance the rotating masses and the cylinder
arrangement. The boxer is inherently balanced.�
=====
M.Jones, student of philosophy and religion at Temple University, Philadelphia, PA.
"The heart has its reasons which reason does not know." -Blaise Pascal
"With man, instinct and reason avoid each other with adversity, yet, by repudiating each other they lure each other to reach mutual correction." -Lucian Blaga
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