date not saved · #1
is there any wya to calculate for front and rear spring rate?
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spring rate
This thread was saved without dates. "Around Jun 2005" is estimated from neighbouring threads.
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Yea.
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thanks for the help!, jerk
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Sorry, I thought that would be funny at the moment. But there is a way to do (I think). I don't know it. But if you are wondering about the S12's spring rates, They are:
Front: 148 lb/in
Rear: 131 lb/in
There is a shop in Canada thet makes stiff lowering springs just for the S12.
Their spring info is:
(Info taken from Indy's post)
Front:
drop - 1.75"
rate - 325lbs/in(5.8kg/mm)
ground to top of wheel arch 24 5/8" (24 1/2" before settled)
Rear:
drop - 1.5"
rate - 275lbs/in(4.9kg/mm)
ground to top of wheel arch 24 7/8" (24 3/4" before settled)
And they are $155 CAN plus shipping. Thats about $118 and shipping for the states.
Just thought you should know in case you were wondering about this stuff. I also didn't mean to be an asshole, I just thought that was funy at the moment... and I'm still giggling about it. tee hee.
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You need a spring rate tester, it's kinda like a hydraulic jack rigged up with a pressure guage at the bottom. You put the spring in, screw the pad up to get the right preload, and then jack the spring to 1", and it'll tell you how many inch-pounds the spring is rated at.
Just out of curiosity, what do you need to know exactly?
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I'm trying to figure out what is the correct rear spring rate if I was running a 450lbs spring up front.
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I'd guess around 300-320 pound would be good, or in other words heavier than i can find...dammit :(
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you can run whatever the hell rate you want
stiffer rear end than front will induce oversteer.
softer rear end than front will induce understeer.
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Seeing as how his screen name is love2drift, I would think a 375 or 400lbs spring would work excellent.
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Front: 148 lb/in
Rear: 131 lb/in
.
careful yo need to say what year and model this is for.. my fsm for a 1986 says
fronts: 138
rears: 119
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Yes, there is a way to calculate spring rating but I can't give you the equation because I don't have my text book with me. You can do a search on the net but I can tell you that not all equations are accurate. The equation should include a variable that is related to the dead coil type. I believe the stock front spring are lighter then the rear, something like 119 front and 130 on the back??
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I believe the stock front spring are lighter then the rear, something like 119 front and 130 on the back??
nope the fronts are always heaveier then the rears... there more wirght up front then up back
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I got those numbers from Indy when he posted all the info about what changes the Canadian springs would cause... So blame him.
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I got those numbers from Indy when he posted all the info about what changes the Canadian springs would cause... So blame him.
not blaming just letting us know that there where alot of variations
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Alot of variations, that are all still shitty.
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Bartc_j, fronts are 119.8 lbs/in, rear are 129 lbs/in and I'm reading whats in my 86 FSM 1 st revision; go look it yourself. I also gave Indy photocopies of the pages from my FSM and he can check it out too. I believe the V6 S12 has 166.8lb/in front and 158lb/in back. As for the 87/88 turbo I think the ratings are 166.8 front and rear.
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can anyone tell me a web address for these guys in canada that do the springs? tuning parts for s12 suspension are not easy to come by in england!
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www.canuckmotorsports.com