[Shotimes] Eibach springs with stock struts?

Ian Fisher dataflash@yahoo.com
Wed, 23 Feb 2005 20:48:43 -0800 (PST)


Zach

SHOtimes hasn't been the same without you. I missed
this stuff! :)

By the way, what does c stand for? 

Ian


>  
> ---- Zach Leahy <leahyz@gmail.com> wrote: 
> > Ah, spring-mass-damper systems...  
> > 
> > ya'll take differential equation in college?
> > 
> > it's a second order (ax'+bx+c=0) system and you
> are changing some of
> > the terms by changing the springs.  Particularly
> you have affected the
> > 'b' term in the equation.  Now, without having
> real numbers to work
> > with, I would say that you probablt don't want to
> make b larger
> > without making a larger as well.
> > 
> > In real world terms, the spring creates more force
> now, and the
> > dampener (if as stiff, or potentially less) cannot
> counter the higher
> > foces (bx) that the spring generated.  the end
> result is an
> > ocillation, and a quesy feeling, and jokes about
> hydraulics.  I would
> > say that you need to increase the dampener effect
> in front.  I think a
> > good approach would be to look at how stiff these
> are compared to what
> > came out, and what possiblilites you have, and
> then select something
> > with better damping force.
> > 
> > Z
> > 
> > PS, i use an eibach/tokico setup on all 4 corners
> and find it quite good.
> > 
> > 
> > On Wed, 23 Feb 2005 10:11:52 -0500 (Eastern
> Standard Time), Carl
> > Prochilo <gr8sho@prochilo.myserver.org> wrote:
> > > Dave, I recently replaced the worn Tokico strut
> inserts in my 92.  What
> > > was happening is that when going over speed
> bumps or hitting a dip in the
> > > road, the front of the car would undulate 2 or 3
> times before it would
> > > settle down.  Very disturbing.  After I replaced
> the strut inserts, that
> > > same dip in the road has the front of the
> oscillate once and stops.
> > > 
> > > So based on your description, if the car bounces
> excessively, and you feel
> > > the struts themselves are in good working order,
> then they most likely
> > > don't have enough dampening force to compensate
> for the progressive rate
> > > Eibach springs.
> > > --
> > > Cheers,
> > > Carl Prochilo
> > > 92 Ultra Red Crimson
> > > 
> > > On Wed, February 23, 2005 9:30 am, Dave Garber
> said:
> > > > Hey guys,
> > > >
> > > > I've got a question concerning struts. My car
> is currently running
> > > > Eibach springs with GR-2 struts. The car rides
> like a school bus (the
> > > > front end bounces like crazy!) and I was
> thinking about going to a stock
> > > > Motorcraft strut. Now, I've heard that the car
> rides like this because
> > > > of the Eibach springs, as the GR-2's are
> essentially a stock replacement
> > > > strut. Is this true? Would new Motorcraft
> struts with the Eibach's ride
> > > > like this? I mean, this thing bounces so much
> that I've had a guy ask me
> > > > if I have hydraulics on the car! It's the
> worst riding car I've ever
> > > > owned!
> > > >
> > > > I should note that the rear of the car rides
> great. It's just the front
> > > > end. It literally bounces almost non-stop on
> anything other than
> > > > perfectly flat roads. You start to get used to
> it after a while, but
> > > > then I'll hop in my 99 and realize just how
> BAD the 94 really is. I find
> > > > it hard to believe that this is simply the
> result of running slightly
> > > > stiffer springs on a stock style strut. I
> think it's more likely that
> > > > these GR-2's just suck (at least the fronts.
> they are made in China, and
> > > > the rears are made in Italy). Anyone have any
> thoughts?
> > > >
> > > > Thanks!
> > > >
> > > >
> > > > Dave Garber
> > > > Pittsburgh, PA
> > > > 99 White, 79k
> > > > 94 Blue MTX, 191k
> > > >
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