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Re: Rear wheel steering

To: "Bryan Savage" <>
Subject: Re: Rear wheel steering
From: "DrMayf" <>
Date: Mon, 22 Sep 2003 15:57:15 -0700
Sure, that works for me. The two engine's are producing a couple around the
cg and that would be a real challenge to untwist with the contact partc of a
rear wheel or two. More like a thrust vector system would be needed. On the
shock wave, was the surface "pulverized" anly at eh points where the shock
wave weas present? I bet that just the air flow around that great beast had
something to do with it also even at slower speeds. Have anymore infor on
the dymation? or whatever it was called? I'd like to learn more. And of
course there is the inline rear steer vs the side by side rear steer. Inline
is difficult because of caster in the system (if you design and build it
that way). I still want to build a small test rig for rear steer...


----- Original Message -----
From: "Bryan Savage" <>
To: "DrMayf" <>
Cc: "land Speed List" <>
Sent: Monday, September 22, 2003 1:55 PM
Subject: Re: Rear wheel steering

> mayf, list
> On the runs Louise is referring to, I see two problems.
> The cockpit video shows the thrust differential gage NOT on center. At one
> point Andy backs out of the throttle because full lock can't overcome the
> uneven thrust. I have a copy of the video on my PC.
> I have a copy of their post record publication with pictures and
> of the track surface (playa surface) after the supersonic runs.
> The supersonic shock wave pulverized the surface to a depth of several
> inches
> Pictures show shock waved being produced by the large engine housings.
> I believe that this produced a significant loss of directional stability.
> Buckminster Fuller's Dymaxion Car was rear steer and was gathering
> support when
> "A fatal crash, wrongly blamed on the steering instead of the other car
> involved,
> was also fatal to investors"
> I believe the above quote is from: BF's Universe,  Lloyd Steven Sieden
> (1989)
> One of the times I was at Black Rock I bought a Scientific American and
> discovered
> an article about the Dymaxion. I showed it to Glynne Bowsher who
> experssed surpprise
> stating he knew nothing of the car. I gave him the magazine.
> To my knowledge, Fuller and Bowsher are the only experienced engineers
> who ever
> designed a rear steer vehicle intended to go over 100 MPH.
> This leads me to believe that there may be room for new, improved
> Bryan

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