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Antiroll Bar Rates


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In my search for info on antiroll bars I broke out the text books (Trig) and did some calculations using formulas from Don Alexander's book PERFORMANCE HANDLING. These rates are in pounds per inch of deflection, and are based on stock antiroll bar shapes both front and rear. (if sombody would post the dimensions for the rear type that mounts to the uprights I will calculate it and post.)

 

Front

 

16mm 75lb per inch

 

18mm 120lb per inch

 

20mm 183lb per inch

 

21mm 223lb per inch

 

22mm 268lb per inch

 

23mm 321lb per inch

 

1" 447lb per inch

 

1 1/8 717lb per inch

 

 

REAR

 

20mm 86lb per inch

 

21mm 105lb per inch

 

7/8" 139lb per inch

 

1" 211lb per inch

 

Hope somebody else finds this usefull

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Is your calculation of the deflection number:

 

1. The total deflection of both arms measured at the link mount holes

2. The total deflection of both arms measured at some other standard point on the arms.

3. The amount of twist in the bar itself?

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Is your calculation of the deflection number:

 

1. The total deflection of both arms measured at the link mount holes

2. The total deflection of both arms measured at some other standard point on the arms.

3. The amount of twist in the bar itself?

 

Hopefully it would be 1.) above' date=' as that would be the most meaningful answer.

 

I guess [b']2.)[/b] would be okay if you knew where the reference point was.

 

3.) would need to be in lb-ft/degree to be meaningful.

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johnc wrote:

Is your calculation of the deflection number:

 

1. The total deflection of both arms measured at the link mount holes

2. The total deflection of both arms measured at some other standard point on the arms.

3. The amount of twist in the bar itself?

 

 

# 1 is correct. This is the formula I used if any one is interested.

 

315294.1 X R4 X O

A X L

 

R4= effective radius of the bar to the 4th power

0 = angle of deflection in degrees

A = effective arm length

L = effective bar length

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