Re: yellow Koni's w/ stock springs for a 4kq?

["Doug Johnson" <ur-quattro@msn.com>]

In dynamics of mechanisms there are three, and only
three, types of elements.  They are spring, mass and
damper.  The spring exerts a force based upon
displacement.  The damper exerts a forced based upon the
velocity across it.  The mass exerts a force based on its
acceleration (or, more correctly, accelerates due to a
force placed upon it).  Thus, you have force based on
displacement (meters), velocity (the first derivative of
displacement with respect to time, meters/second), and
acceleration (the second derivative of displacement with
respect to time meters per second squared). The Europeans
are better with the name of the shock absorber than we in
the states as, I believe, they correctly refer to the
shock absorber as the damper.

FWIW,

 - Doug

Now, back to Jeryd's question.  What happens when you put
a hard damper inside of a stock spring.
Remember, the spring responds to displacement, while the
damper responds to the velocity across itself...

Help me to learn along with Jeryd, okay?

----- Original Message -----
From: David G <daveglu@hotmail.com>
To: <quattro@audifans.com>
Sent: Saturday, October 16, 1999 12:59 AM
Subject: Re: yellow Koni's w/ stock springs for a 4kq?


|
| > >    Higher spring stiffness.  If one spring is rated
at 300 lb, it will
| > >require roughly twice the dampening "force" of a 150
lb spring  for the
| > strut
| > >to control it.
| >
| >
| > But then the suspension is only moving half as far,
giving similar driving
| > conditions and vehicle weight.
| >
| Exactly, the shock has to control osolations with only
half of the distance
| to work with.
| Also these suspention parts are mis-named the way it
was explained to me,
| the spring absorbs the "shock" and the "shock absorber"
dampens or controls
| osolations of the spring.  Please feel free to correct
me is I am wrong
| here.
|
|   Dave
| http://www.pelkie.com/mycars.htm
|