# Anti Roll Bar Rate

1. Jan 9, 2012

### Jas1159

I have an equation taken from a book that when converting from imperial to metric gives me the complete wrong answer when converting back afterwards... it seems simple but im obviously missing a trick, can anybody help?

Imperial Equation
Angular Rate / (Lever Length2 x pi /180) = Roll Bar Rate (in*lbs)
75.46in*lb / (7in^2 * pi / 180) = 88.24 (in*lbs)

Metric Equation
0.892m*kg / (0.178m^2 * pi / 180) = 1618.035 (m*kg)

Converting 1618.035m*kg to in*lbs gives 140439.1994in*lbs

2. Jan 9, 2012

### nvn

Jas1159: lbf should be converted to newton (N), not kg. Try again. Also, the units on the left-hand side of your equation do not match the units on the right-hand side of your equation, thus indicating a mistake.

3. Jan 10, 2012

### Ranger Mike

is the ARB solid or hollow?
formula for solid Anti Roll Bar , sway bar , stabilizer is -
1,125,000 x D⁴ / L x A
where D = bar outside diameter, L= effective bar length A+ effective arm length

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Last edited: Jan 10, 2012