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Re: Sway bar diameter / solid / tube, etc. Posted by DavidC [Email] ![]() ![]() In Reply to: Re: Sway bar diameter / solid / tube, etc., JimBlake ![]() ![]() |
JimBlake is very right J is for torsion.
For a solid bar J = 3.14 times (Outs Dia raised to 4th power) and everything divided by 32
For Tube J = 3.14 times (Outs Dia raised to 4th power)-(Inside Dia raised to 4th power) and everything divided by 2
where J is the polar moment of intertia and you compare the J's to each other
Assumption: rod or tube is same twisted-length
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