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Re: [Land-speed] Charles Nearburg

To: land-speed@autox.team.net
Subject: Re: [Land-speed] Charles Nearburg
From: Larry Mayfield <drmayf@mayfco.com>
Date: Thu, 06 Jan 2011 17:21:39 -0800
Lots of variables to consider when putting power down. One is the torque 
available at speed. Another is condition of the salt. The salt 
coefficient of friction comes into play as well.  If yo have the torque 
curve of the engine output through the gears drive system you can 
determine the minimum down force or weight needed on the drive tire to 
meet traction needs.  As hp increases over the 5252 rpm then torque 
declines so as long as you can make it through teh peak torque in final 
drive you can lay down the power if the car or bike is loaded correctly. 
IMHO, lol...  Also good aero reduces the drag which translates to the 
power needed.

mayf

On 1/6/2011 2:07 PM, Bryan Savage wrote:
> Hi folks,
>
> While reading Howard Nafzger's comments about the car he designed and 
> built,
> "How did Charles hook up so much horsepower with two-wheel drive?b
>
> A very interesting question. Before he did it, I couldn't believe you 
> could put enough
> power down on the salt to exceed 400MPH.
>
> All I can think of is that the car has outstanding aero so it didn't 
> have to put down
> a lot of power...??
>
> As it was an FIA run, it wasn't a tail wind.
>
> Anyone else have any ideas?
>
> Thanks,
> Bryan _______________________________________________
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