torsion bar spring rates??
cnfabo - December 16th, 2013 at 09:44 PM
Hi guys & gals, does anyone know the spring rates for long IRS 28 & 30mm torsion bars,also for the std bj beam leaf stack...
Thanks
Fabo
Craig Torrens - December 16th, 2013 at 09:51 PM
yep
1303Steve - December 16th, 2013 at 09:53 PM
http://www.swayaway.com/VWLeafSprings.php
http://www.swayaway.com/TorsionBars.php
cnfabo - December 16th, 2013 at 10:01 PM
None of them had the spring rates
cnfabo - December 17th, 2013 at 08:26 AM
| Quote: |
Originally
posted by Craig Torrens
yep
|
Well??
HappyDaze - December 17th, 2013 at 09:22 AM
Craig will probably answer:- "I am well thanks Chris".
You need to ask him:- "What are the spring rates, Craig?". 
Craig Torrens - December 17th, 2013 at 01:51 PM
I am well thanks Chris 
dangerous - December 17th, 2013 at 02:38 PM
Wheel rate:
28mm is 242lbs
30mm is 319lbs.
this assumes 26 9/16" length bar and 16" lever.
Craig Torrens - December 17th, 2013 at 04:06 PM
| Quote: |
Originally
posted by dangerous
Wheel rate:
28mm is 242lbs
30mm is 319lbs.
this assumes 26 9/16" length bar and 16" lever.
|
Just remember the spline section doesn't twist, so that needs to be accounted for to give more accurate calcs 
cnfabo - December 17th, 2013 at 06:28 PM
| Quote: |
Originally
posted by Craig Torrens
| Quote: | Originally
posted by dangerous
Wheel rate:
28mm is 242lbs
30mm is 319lbs.
this assumes 26 9/16" length bar and 16" lever.
|
Just remember the spline section doesn't twist, so that needs to be accounted for to give more accurate calcs
|
close enough hairy muff....................he he
thanks muffin man
cnfabo - December 17th, 2013 at 09:01 PM
Any for the front dave
Sides - December 18th, 2013 at 07:27 AM
So you goin the 28's or the 30's Chris ?
cnfabo - December 18th, 2013 at 09:13 AM
| Quote: |
Originally
posted by Sides
So you goin the 28's or the 30's Chris ?
|
Not sure yet dave,give me a month or so to finish the body then I'll decide..
BRUTUS - December 18th, 2013 at 02:34 PM
For a uniform circular rod, the value should be proportional to the fourth power of the ratio of the diameters, so if you know one figure you can
calculate any other (for the same material).
dangerous - December 19th, 2013 at 08:40 AM
| Quote: |
Originally
posted by BRUTUS
For a uniform circular rod, the value should be proportional to the fourth power of the ratio of the diameters, so if you know one figure you can
calculate any other (for the same material).
|
Yes,
so to work out for a shorter(stiffer) bar,
just divide buy the shorter length
and multiply by the longer length.
The effective length will depend on spline length, and
where the radii starts and finishes, so will be an approximation.
Personally I would measure the length of only the parallel part,
which will be the closest.
Craig is correct,
the effective length used will have to be less than the advertised length that I used for the calcs.