land-speed
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Re: Drag

To: Malcolm Pittwood <MPittwood@compuserve.com>
Subject: Re: Drag
From: Dave Dahlgren <ddahlgren@snet.net>
Date: Tue, 28 Jan 2003 05:35:42 -0500
I would bet the perfect tire has zero mass and infinate stiffness.. I am real
curious to hear what Ron would say to that thought..
Dave

Malcolm Pittwood wrote:
> 
> All
> 
> Just a small point from Terry's post.  This is backed up by Ron Ayres (Aero
> expert on Thrust SSC).  Tire induced drag is significant and Ron believes
> this was a major factor in LSR cars (wheeldriven and non wheeldriven)
> underperforming against their design speed.
> 
> I agree that there is not much the racer can do with the tires he/she has
> but the initial selection process will be an opportunity to factor in some
> better numbers.  But we have been here before and know that the makers lack
> any info!
> 
> Ron has yet to publish his data but he does give excellent talks on the
> subject if you can get to hear him.
> 
> Malcolm Pittwood, Derby, England.

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