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Front end geometry [message #170806]

Fri, 25 May 2012 09:46

Surbo

Messages: 213
Registered: February 2004

Karma: 0

Senior Member

Howdy;

Here is a site where you can move the contact points around for the front end and see live what happens.

http://www.racingaspirations.com/?p=286

Most front end geometry sites are geared for racing, nevertheless, there is some intersting software around that has a lot of inputs that can be put in to get some results. Example;

http://www.susprog.com/tutorial/tutorial03/HerbAdams.htm

Bob Drewes in SESD

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Re: [GMCnet] Front end geometry [message #170833 is a reply to message #170806]

Fri, 25 May 2012 13:11

Kosier

Messages: 834
Registered: February 2008

Karma: 1

Senior Member

yes, I have Herb Adams book. I met him years ago, after a seminar he gave
on handling. He's a very practical engineer, as well as a fanatical racer.

Gary Kosier

-----Original Message-----
From: Bob Drewes
Sent: Friday, May 25, 2012 10:46 AM
To: gmclist@temp.gmcnet.org
Subject: [GMCnet] Front end geometry

Howdy;

Here is a site where you can move the contact points around for the front
end and see live what happens.

http://www.racingaspirations.com/?p=286

Most front end geometry sites are geared for racing, nevertheless, there is
some intersting software around that has a lot of inputs that can be put in
to get some results. Example;

http://www.susprog.com/tutorial/tutorial03/HerbAdams.htm

Bob Drewes in SESD

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Re: Front end geometry [message #170834 is a reply to message #170806]

Fri, 25 May 2012 13:40

bwevers

Messages: 597
Registered: October 2010
Location: San Jose

Karma: 5

Senior Member

I went to the website and entered the dimensions for the 1 Ton upgrade using these numbers:
Lower control arm length 14.75" or 375mm
Upper control arm length 9.75" or 248mm
Distance between mounting points on HUB 11" or 279mm
Distance between mounting points on chassis 9" or 229mm

The upper control arm is angled up 12.75 degrees when the
bottom arm is level.

The camber angle has a huge change from - 5 degrees to
+2.5 degrees when moving 3 inches up to 3 inches down.
That's 7.5 degrees of camber change

This compares with less than 1 degree of camber change with
the stock suspension.

Regards,
Bill

Bill Wevers GMC49ers, GMC Western States 1975 Glenbrook - Manny Powerdrive, OneTon 455 F Block, G heads San Jose

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