Used Bowling's formula: http://www.bgsoflex.com/auto.html
.14Cd; 13.5 sq ft frontal area; temp 70 degrees; baro 25"; speed 270; weight
3000; tire pressure 75; no front lift. Now if I use 50 lbs tire pressure and do
it again, it comes out .25 at about 600 hp and if you have a 25% loss in the
drive train that would be close. I'll send a note to Bowling and see about the
pressure thing.
Skip
At 01:43 PM 11/6/01 -0700, Joe Amo wrote:
>How did you get .14 cd with 840 hp and 270mph??
>Joe
>
>Higginbotham Land Speed Racing wrote:
>
>> Joe, it is half the frontal area for starters and has 2 wheels....might
>> have something to do with it???
>> I didn't say I was correct....just that I made some assumptions in the
>> absence of factual data.
>>
>> Skip
>>
>> At 01:18 PM 11/6/01 -0700, you wrote:
>> >Skip looking at just know data
>> >says something is off in these
>> >"calculations":
>> >you went 270 mph with 840hp
>> >Ez hook reached a speed of 301 mph with 170hp in 96'
>> >Joe :)
>> >
>> >john robinson wrote:
>> >
>> >> At 11:50 AM 11/6/01, you wrote:
>> >>
>> >> >Yes but for me:
>> >> >
>> >> >Trouble with that is I have lakester data and am trying to apply it to
>> >> >streamliner......
>> >> >I think the lakester Cd is about .14 based on 840 hp and frontal area is
>> >> >about 13.5 sq ft. (speed 270)
>> >> >If I assume that the Cd of the wheels and tires doubles the Cd of the
>> >> >liner, then the liner Cd is .07
>> >> >I still think that there are too many assumptions and the only practical
>> >> >way to prove it is to run and then do "coast downs".
>> >> >Skip
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