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Re: Re: Tractive effort VS Aerodynamics drag wall

To: Chris Harris <yesford@clear.net.nz>, Nt788@aol.com, nafzger@vtc.net,
Subject: Re: Re: Tractive effort VS Aerodynamics drag wall
From: <wmtsmith@landracing.com>
Date: Tue, 7 Jan 2003 21:20:17 -0500
Where is peak torque vs peak Hp and how fast do you fall off- 

multifpy torque x Ratio about ever 300 rpm if you have a dyno sheet on your eng.

In our case we avg 269.?? last mile with a 272 exit speed  almost perfect we 
were turing 7315 with an eng peak hp at 6350.  wmts

2.75--2.80?


> 
> From: Chris Harris <yesford@clear.net.nz>
> Date: 2003/01/07 Tue PM 07:37:43 EST
> To: wmtsmith@landracing.com,  Nt788@aol.com,  nafzger@vtc.net, 
>    land-speed@autox.team.net
> Subject: Re: Re: Tractive effort VS Aerodynamics drag wall
> 
> 
> 
>   My old stupid saying is gears don't make horsepower! Jack
> 
> 
>  Jack..............surely the right gear will put you into the right rpm
>  where the most power is.
>  Chris Harris..........................NZed.
> 
> 
>  Chris,
>   I agree and most times when you slightly undergear the tractive effort is
> greater because your lower gear multiplies the tourque more that your eng.
> tourque falls off---under gear over rev.  This applies when you have hit the
> aero drag wall to available power.  wmts>
> 
> Hmmmm................now you've really got me thinking. At Speedweek 2001
> due to tall a tooth (2.50) we ran 194 1/4s but only 208 exits out the 5.
> Really hit that wall in top gear only able to pull max of 6,500 rpm with a
> dynod torque peak at 6,900. Figure we need a 2.9 tooth to pull 8,500 rpm in
> top. That will be well beyond the torque peak so I'd better pack some
> intermediate sets as well when we return later this year, based on your
> valuable advice.
> This list is No 1 !
> 
> Chris H......................NZed

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