[Spridgets] Power required for a given CDa to reach a specific speed.

[WeslakeMonza1330 at aol.com]

Hi Ron and list,
 
I want to create a graph in Excel that shows how much power required for a  
given CDa to reach a specific speed.
 
To this I need a formulae that I can use in Excel.  I have a library  of 
technical motoring books that puts to shame virtually any public lending  
library in the UK and maybe some colleges.  However, I can't find the exact  
details of what I need.
 
The Forbes Aird Aerodynamics book includes a formulae along with a value  
that I don't see referenced in the text.
 
The Colin Campbell Sports car book is about the same but with a different  
value I don't see referenced in the text, which is:
 
Drag Horsepower (I'm ignoring non-drag horsepower for now) = Coefficient of 
 drag x frontal area x mph cubed  DIVIDED by 146,000.  So what is the  
value of 146,000?
 
Thanks
 
 
Daniel
 
 
 
 
 
 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/spridgets/attachments/20171119/ebd43518/attachment.html>