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PostPosted: November 29, 2012, 9:59 pm 
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Joined: October 23, 2010, 2:40 am
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Driven5 introduced me to the AdamsBrake Calculator located here: http://www.locostusa.com/forums/viewtop ... f=5&t=4090
where it is attributed to Mike Polan and reference is made to a book about brakes by Herb Adams.

I really liked the AdamsBrake Calculator as a tool for brake system design, but as I dug into it a few things became apparent. First, the pages noted in the spreadsheet correlate instead with those of the "Brake Handbook" by Fred Puhn. Also, there were a couple of things that would make it easier to use and more accurate in the general case. So I modified the spreadsheet and for clarity renamed it the Brake Components Calculator. A zipped version is attached below.

The changes made in the modified version include:
(1) Re-formating for ease of reading and printing,
(2) Additions and clarifications to line item notes,
(3) Addition of Nominal Tire Radius and Brake Effective Radius inline calculations,
(4) Corrections to the cylinder and piston motion calculations and to balance bar calculations to better address the general case, and
(5) Removal of the "Protect Sheet" constraint so user changes to the spreadsheet can made.

Many thanks to the author(s) of the original. I'm open to any and all feedback.

It is highly recommended the user read Puhn's book before using the spreadsheet.

And don't let your Rears get locked up!


Attachments:
Brake Components Calculator V1.0.zip [28.66 KiB]
Downloaded 332 times

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Cheers, Tom

My Car9 build: viewtopic.php?f=35&t=14613
"It's the construction of the car-the sheer lunacy and joy of making diverse parts come together and work as one-that counts."

Ultima Spyder, Northstar 4.0, Porsche G50/52
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PostPosted: November 30, 2012, 12:34 am 
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Joined: April 5, 2008, 2:25 am
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Location: Fort Worth, Texas
Thanx.

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I drive therefore I am

I can explain it to you,
but I can't understand it for you.


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PostPosted: November 30, 2012, 2:45 am 
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Joined: April 26, 2008, 6:06 pm
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Location: Under the weather. (Seattle)
Thanks for taking the time to make those corrections and improvements! :cheers:

...Of course, now I have to copy all of the data from my old files into the new version.

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Also follow my build on blogspot, tumblr, or instagram and twitter (GarageOdyssey)


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PostPosted: November 30, 2012, 8:49 am 
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Joined: January 10, 2008, 4:47 pm
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Location: Massachusetts
This sounds like a good idea. I was looking at the tracks my local clubs are running these days and it looks like it makes sense to go for bigger brakes then I had been thinking of. Car9 could probably put 3 or more times the heat into the brakes that my Formula Ford did.

Would you like to stash a copy on the Car9 website too?

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PostPosted: November 30, 2012, 11:10 am 
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horizenjob wrote:
Would you like to stash a copy on the Car9 website too?
Ok, I put one here:
https://sites.google.com/site/car9buildit/home
It's under the Downloads tab.

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Cheers, Tom

My Car9 build: viewtopic.php?f=35&t=14613
"It's the construction of the car-the sheer lunacy and joy of making diverse parts come together and work as one-that counts."

Ultima Spyder, Northstar 4.0, Porsche G50/52


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