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Learning how to build Lotus Seven replicas...together!
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PostPosted: Wed Jul 30, 2008 12:46 pm 
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Lumbering Giant
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Location: near Cleveland, OH
I found this via Google search, not sure how to access from the site's home page:

http://www.fromsteve.net/carstuff/suspe ... onCalc.htm

The parent website is Build a Faster Car.

To use, open the link in Excel and insert your own values. It can be saved on your hard drive in .xls format.

This spreadsheet allows you to tweak suspension settings and estimate outcomes in terms of roll couple distribution, load on each tire, and degrees of body roll. It is brilliant.

Chet, could you sticky this?

Edit: It might be a little presumptious to ask for a sticky, but the nearest thing to this that I know of costs some $$$.

Pete


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PostPosted: Wed Jul 30, 2008 1:39 pm 
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It's a straightforward torque balance of all major components, just a force x distance. I wrote one myself and provide it free to all book buyers :wink:

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PostPosted: Wed Jul 30, 2008 2:11 pm 
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Lumbering Giant
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ORLY, KB?

KB58 wrote:
It's a straightforward torque balance of all major components, just a force x distance. I wrote one myself and provide it free to all book buyers :wink:


Hahaha, like I said... ;)

Isn't it funny how every profession has its own tricks of the trade? To an engineer, this is child's play. A surgeon can slice off the organ of your choice without blinking. I can read bad handwriting upside-down across a desk. :D


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PostPosted: Sun Feb 08, 2009 9:25 am 
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I've found this one surfing on the net:
http://fsae.com/eve/forums/a/tpc/f/1256 ... 8510005141

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PostPosted: Mon Mar 29, 2010 7:06 am 
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Pete B wrote:

The parent website is Build a Faster Car.
e


Some of the articles there are woeful, take them with a grain of salt.


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PostPosted: Tue Sep 14, 2010 5:46 pm 
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Hi there,

I came upon this site in doing some suspension research. I was going to use a few resources, including Steve's, as a basis to piece together some theory and put it all into practice

I'm curious as to the articles that are woeful - is there still something useful that might still be pulled from them?

Thanks!


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PostPosted: Thu Apr 14, 2011 7:48 am 
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'Build a Faster Car' looks to have a lot of 'fluff', but on the plus side, it was the only place I found (on the web, but I'm not the best searcher) that gave me formulae for caster- and KPi-induced camber when I was doing suspension geometry design using a string computer. Of course, I could have bought a chassis dynamics text ...

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PostPosted: Mon Aug 05, 2013 3:23 pm 
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Both the "build a faster car" and the FSAE links to weight transfer spreadsheets are dead links (no spreadsheet to be found). Is there a current active link the one of these weight transfer spreadsheets?

I'm build a mid engine RWD (based loosely on the Lotus Europa) track car and looking for a starting point for spring rates and brake bias. Have never worked on a car with more mass in the rear so my past experience is really not helping too much.

Thank in advance for your time


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PostPosted: Mon Jan 27, 2014 2:55 am 
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A fellow racer linked me to this

which I believe is based from http://www.racing-car-technology.com.au/wgttransex.htm

i'm not sure it's the same as the original worksheet but it's probably just about the same end result.

I also believe there is an xls of 'The Locost Suspension Helper.xls' - if you can't find a copy I can dig up my copy and upload it - I don't recall it was quite as good as the weight transfer sheet above.

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