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914World.com _ 914World Garage _ Torsion Bar spring rates

Posted by: Rough_Rider Nov 21 2005, 10:48 AM

I've seen the formula for calculating effetive spring rate of a torsion bar, but honestly i don't know the inputs for 2 (arm length & effective bar length) of the 3 variables.
http://www.proshocks.com/calcs/torsionrate.htm

Anyone already done this?
Looking to know effective spring rate of 18-23mm solid & 21-23 hollow.

Posted by: Aaron Cox Nov 21 2005, 10:53 AM

search. its been posted here 2 or 3 times.

maybe we can add it to the tech info part of the site.

SEARCH is upper right of page in gray shaded box

Posted by: Aaron Cox Nov 21 2005, 10:55 AM

here is one thread with conflictng asnwers..
http://www.914world.com/bbs2/index.php?act=ST&f=2&t=32342&hl=torsion+bar+rate

Posted by: KenH Nov 21 2005, 03:51 PM

Use these dimension on your Calc Pgae.

Bar Length = 21"
Lever Arm = 14.25"
Bar Dim. = your selection

Ken

Posted by: Jeroen Nov 21 2005, 04:22 PM

just use this table...
http://instant-g.com/Data/911CoilConv.html