Drat, forgot to delete the trailer...
mayf
----- Original Message -----
From: "DrMayf" <drmayf@teknett.com>
To: <tigers@Autox.Team.Net>
Sent: Tuesday, November 23, 2004 1:46 PM
Subject: Re: Ackerman Angle
Interesting about ackerman and steering ...seems to pop up at least once a
year. Have any of you looked at my web site under the f=ma icon? There is
an
analysis of the steering the tiger has and how much effect the mg arms have
and then what it would take to make the steering perfect. As has been
alluded to, the problem is a compound one: the rack is too far forward and
the steering arms are not correct for optimum ackerman. Steering arm tie
rod
location can be simply found by making a sketch of the front and rear axle
location, finding the center of the rear axle, locating the bottom ball
joints on the front axle center line. Then you draw a line from the center
of the rear axle through the ball joint up front. The tie rod location can
be at any point along the line. If it goes in front of the ball joint it
has
to move outboard by quite a bit, as Duane did. If it can be put behind the
ball joint then things are better by a long shot...except as noteed, the
oil
pan and it innards get in the way. I am looking at a front cross member,
with the help from another list member of a possible syetem, that with a
pan
change to late model, would allow the rack to be in the area between the
humps on the oil pan. May not be doable, but loooking at any way. I have a
set of mg arms somewhere and after my analysis I decided that the work
involved did not yeild many benefits. The holes on the mg arms have to be
elongated to make them fit, as I remember. I have not seen the kit that
Dale sells, nor how it is installed. If anyone has information that can be
emailed to me, I would appreciate it.
mayf, out in Pahrump, below are sites where analysis is located...
http://www.teknett.com/pwp/drmayf
http://www.mayfco.com
> ----- Original Message -----
> From: "Steve Laifman" <SLaifman@SoCal.rr.com>
> To: "Stephen Waybright" <gswaybright@yahoo.com>
> Cc: <tigers@Autox.Team.Net>
> Sent: Tuesday, November 23, 2004 12:32 PM
> Subject: Re: Ackerman Angle
>
>
> > Stephen,
> >
> > From what I can see of the steering geometry, the length of the
> > steering arms effect the steering ratio (turns of steering wheel to road
> > wheel angle change) and not the relationship between the opposite
wheels.
> >
> > To visualize what a correctly designed steering set up might look like,
> > relocate the rack backwards until the connecting arm is no longer bent,
> > but is in line with the rack. Certainly the length of the steering arm
> > comes into play here, but you will quickly need "Ahnold" to turn the
> > steering wheel.
> >
> > Now this is NOT an "expert" opinion, merely a visualization of what I
> > have heard of the issue. It certainly makes the picture clear, to me.
> > I am not familiar with any other car that has bent rods between the rack
> > and the steering arms, but that is only my personal experience.
> >
> > If the steering arms are lengthened to allow straight connections to the
> > rack, I think you are inside the tire.
> >
> > Anyone with real technical expertise, rather than opinion, is invited to
> > contribute - please.
> >
> > Steve
> >
> > Stephen Waybright wrote:
> >
> > >Aside from moving the rack, don't the longer MGB steering arms used as
> > >part of installing Dale's kit compensate as well against the 4 inches
> > >(or whatever it really is) misplacement of the rack???
> > >
> > >--- Steve Laifman <SLaifman@SoCal.rr.com> wrote:
> > >
> > >
> > >>It was said that to truly get the Ackerman angle to the correct
> > >>alignment, the rack must be moved back about 4 inches, which places
> > >>it
> > >>in the middle of the pan.
> > >>
> > >
> > >
> > >
> >
> > --
> > -----
> >
> > Steve Laifman
> > Editor
> > http://www.TigersUnited.com
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