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Mar 19, 2008 | 12:55 PM

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waldig

Senior Member

Joined: Feb 2008

Posts: 4,508

Likes: 34

From: VA

What the HECK is the camber angle?

Thanks to the members on the FORUM I have been doing research and finally added the Eibach Pro springs to my SRT-6. I was concerned that the stance would be too high or low etc. Brian Brave had some interesting thoughts that I would suggest you read for reference. Now, I am able to pull a rear spring out in 10-15 minutes and replace it to adjust its height. This is on my lift with a floor jack.

The Eibach set-up is a bit low for the front and the rear was higher and not equivalent. I pulled the rear springs and cut them about 1/2 turn shorter, and then I recut the Passenger rear spring about 1/3 more. Seems that the right rear wanted to sit about 1/2" higher, so I had to do the cut again.

Now Iam happy and the distance from the top of the rear rim to the bottom of the fender lip is 3.5". Thats a good way to measure it and eliminates errors with the surface of the pavement. Now the rear has a fair amount of camber with the top of the tires further inward than the bottom. This is not a biggy deal but What the HECK is the camber?

To measure the angle you only need a level over two feet long and a ruler. Place the bottom edge of the level against the lower edge of the rim. Now move the level in or out until the bubble shows the it is vertical. Take a ruler and measure from the upper lip of the rim to the edge of the level and record the measurment.

My 19" rims are 20.5" from the top to the bottom of the lip and my wheels are tilted INWARD at the top by 1.0". Going back to trig you need to divide the two measurments to determine the Tangent of the angle. For my car and example I divided the inboard distance ( 1.0" ) by the full rim distance that you are measuring by which for me is 20.5".

The resulting number that I got is 0.0487 which is the length of the sine [ of the angle formed ] 1.0" over the cosine length of 20.5". Looking this number up on the internet using a free scientific calculator I got the angle of 2.788 degrees.

This method is easy and can give you a quick check to evaluate the set up you have. To be more accurate, drive the car to a flat spot, do not measure after letting the car down from a lift or jack. The tires will be caught in that case and will introduce significant errors.

For me this angle is a bit too much and I have to design an eccentric bolt or something to allow the rear control arm to move inboard to reduce and control the wheels camber angle. This is an attachment point and should not be too difficult, just some more geometry to get the spacing right.

The attached photo is my attempt to get a shot while holding the camera while balancing the level and ruler. Hope this gives you another TOOL to play with your toy. Yes, I cut the shock bumper bushings.

Enjoy,

Waldig

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