Author Topic: Nomograph relating CdA, BHP and MPH  (Read 28504 times)

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Offline sockjohn

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Re: Nomograph relating CdA, BHP and MPH
« Reply #15 on: June 04, 2008, 05:47:08 PM »
How do you figure what your coefficient of drag is?

Scott

Pay your bucks to the wind tunnel or do a roll down test.  I believe Jack D has experience in doing roll down tests.

I would have to dust off a book or two or do a bit of googling, so you may see what you can find on roll down tests.  In theory it's supposed to be easy IIRC.

Offline tortoise

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Re: Nomograph relating CdA, BHP and MPH
« Reply #16 on: June 04, 2008, 06:34:18 PM »
I would have to dust off a book or two or do a bit of googling, so you may see what you can find on roll down tests.  In theory it's supposed to be easy IIRC.
Uh, see "Coast Down Formula", in "Formulas", this site.
« Last Edit: June 04, 2008, 07:39:20 PM by tortoise »

Offline Stan Back

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Re: Nomograph relating CdA, BHP and MPH
« Reply #17 on: June 04, 2008, 09:56:03 PM »
Jack started his tests at the local bowling alley -- and progressed to engineering wonders.
Past (Only) Member of the San Berdoo Roadsters -- "California's Most-Exclusive Roadster Club" -- 19 Years of Bonneville and/or El Mirage Street Roadster Records

Offline comp

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Re: Nomograph relating CdA, BHP and MPH
« Reply #18 on: July 07, 2008, 08:24:45 PM »
There is some good info on wind tunnel testing at

www.A2WT.com

 cool link

Offline ronwoo

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Re: Nomograph relating CdA, BHP and MPH
« Reply #19 on: February 06, 2012, 02:32:20 PM »
Hello, I just went to open the nomograph, one of my favorite things, and it appears the link is broken. Is there another way I can get access to it?
Thanks, Ralph Hudson

Offline Hot Rod Lincoln

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Re: Nomograph relating CdA, BHP and MPH
« Reply #20 on: May 17, 2012, 05:43:21 PM »
^^^

I was wondering the same thing?

Is there another calculator to use that has the cd numbers?

Jon
« Last Edit: May 17, 2012, 05:45:36 PM by Hot Rod Lincoln »

Offline hotrod

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Re: Nomograph relating CdA, BHP and MPH
« Reply #21 on: May 17, 2012, 06:55:37 PM »
I suspect this may be an issue the web elf needs to sort out, the link might have gotten broken when they did the upgrade.

Larry

Offline ol38y

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Re: Nomograph relating CdA, BHP and MPH
« Reply #22 on: May 17, 2012, 11:58:42 PM »
The RB Racing link in #5 still works...
Larry Cason
Bakersfield,CA    It's a dry heat!

2010 BUB 1350 M-PG record
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2014 El Mirage Dry Lake  1350 A-PG  172.651