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Re: Rear steering

To: Dick J <lsr_man@yahoo.com>
Subject: Re: Rear steering
From: john robinson <john@engr.wisc.edu>
Date: Thu, 25 May 2000 15:17:38 -0500
Howdy, this might work a little better....but there is still the problem of 
matching the fin to the steering, with the over/under input troubles that 
may occur. too much fin and you slow down too.....don't think we want that.....

At 01:58 PM 5/25/00 , you wrote:
>So, what if you don't put the fin on the roof,
>but hang it out the back more like a rudder on a
>boat?
>
>Dick J
>--- john robinson <john@engr.wisc.edu> wrote:
> > Howdy,
> >           I think the problem that might occur
> > is either too much or too
> > little input from the fin, too little will do
> > nothing, and too much may tip
> > the vehicle over...
> >
> >
> > At 10:39 AM 5/25/00 , you wrote:
> > >Why stop there? Do like Breedlove & add a fin
> > on the roof that moves with the
> > >steering input (wheel) and helps to turn the
> > car with air pressure.
> > >Ed
> > >
> > >
> > >"Hyatt Engineering Ltd." wrote:
> > >
> > > > OK, how about if I steer with both the
> > front and rear wheels, and
> > > propel the
> > > > car with neither (middle wheel drive, see
> > the attachment) !
> > > > The rationale is:
> > > > Directional stability is maintained by the
> > front and rear wheels if the
> > > > middle driving wheels are spun or locked up
> > > > The wheelbase is lengthened without the
> > usual compromise in chassis
> > > > stiffness associated with the extreme span
> > from front to rear wheels in the
> > > > conventional arrangement
> > > > The engine (most of the mass) is far
> > forward, and the center of aerodynamic
> > > > pressure is rearward so it is self
> > correcting and inherently stable at
> > > speed
> > > > The drivers tank is at "zero energy state",
> > with the engine, fuel, battery
> > > > and other sources of potential energy in
> > the other tank
> > > > The loading of the steering wheels
> > (relative to the driving wheels) is to a
> > > > considerable extent adjustable by jacking
> > them without moving the center of
> > > > gravity
> > > > I call the steering "telemark" style, in
> > that the curve is carved by front
> > > > and rear wheels turning in opposite
> > directions, just like you do when
> > > > downhill skiing on cross country skis (the
> > telemark (sp?) technique)
> > > > Of course we will never know if it works,
> > if it remains illegal.
> > > >
> > > > Greg
> > > > PS John, I was planning on doing this with
> > the tanks I bought from you last
> > > > year, which turned out to be from the F-84F
> > (the USAF museum is just down
> > > > the road from me, the ultimate resource for
> > such info)
> >
> >
> >               John Robinson, Mechanician
> >    Mechanical Engineering University of
> > Wisconsin
> >                  1513 University Ave.
> >                   Madison, Wi. 53706
> >                      608-262-3606
> >                    FAX 608-265-2316
> >       Current World Land Speed Record Holder
> >               Bonneville Salt Flats
> >             H/GCC 92 cu.in. 1980 Dodge Colt
> >                  131.333 MPH set 1995
> >                  136.666 MPH set 1996
> >
> >
>
>
>__________________________________________________
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              John Robinson, Mechanician
   Mechanical Engineering University of Wisconsin
                 1513 University Ave.
                  Madison, Wi. 53706
                     608-262-3606
                   FAX 608-265-2316
        Current World Land Speed Record Holder
                 Bonneville Salt Flats
            H/GCC 92 cu.in. 1980 Dodge Colt
                   131.333 MPH set 1995
                   136.666 MPH set 1996



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