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 Coil over shock spring rates

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80indy
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PostSubject: Coil over shock spring rates   Coil over shock spring rates Icon_minitimeMon May 03, 2021 4:00 pm

I was going to modify the suspension on my craftsman turbo cool ( it is similar to a LT1000.)
for more front suspension travel . I saw some coil over shocks on Amazon Canada that were for a go cart .
They come in 6 inch and 8 inch tall versions which would work well and they were cheap. The spring rate was 1200 Lbs on all the ones I saw.
This seems incredibly stiff. I don't think my car's are near that. I can get some 13 inch tall ones that are rated 270 Lbs
locally at Princess Auto but they are too tall.
Would a 1200 Lbs work?
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CraftsmanQuad19
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PostSubject: Re: Coil over shock spring rates   Coil over shock spring rates Icon_minitimeMon May 03, 2021 6:08 pm

1200 pounds does seem stiff, but if you got the shorter ones with 1200 pound springs, mount the bottom of the shock closer to the frame on the A arm, and you’ll have more leverage effectively lowering the total spring rate if that makes sense.

If you’re looking to build a solid axle, 1200 is probably far too stiff. @AllosKidD21 is the big suspension guru, so hopefully he chimes in
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Crazy_Carl
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PostSubject: Re: Coil over shock spring rates   Coil over shock spring rates Icon_minitimeMon May 03, 2021 7:00 pm

Something to consider is if leverage will be a factory in your setup. A swing arm or A arm is sometimes about 2 feet long. If the coilover is mounted away from the wheel, there is quite a mechanical advantage there that multiplies the force transferred to the coilover when you go over a bump. So taking that into consideration, and if you plan on jumping this, that 1200 lb rating starts to make sense, but I don't know what your design or application is.
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MightyRaze
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PostSubject: Re: Coil over shock spring rates   Coil over shock spring rates Icon_minitimeMon May 03, 2021 10:46 pm

Kal's is 330lbs each and that is too stiff. I do have them going straight up and down.

Coil over shock spring rates Img_e016

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PostSubject: Re: Coil over shock spring rates   Coil over shock spring rates Icon_minitime

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