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Coil Spring Rate

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Old Mar 26, 2014 | 02:57 PM
  #11  
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never mind, I clicked the link. Are they serious? that truck competed? the shocks are nice, but it takes more than that. I bet that front skid took a lot of hits. I don't know what the stock mini class entails, but I guess they had to leave a lot of it stock. probably got owned. the v8 must have helped it to be competitive.
 
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Old Mar 26, 2014 | 03:40 PM
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No. Not my work. Dont know any specs though but yes it was stock full class so they couldnt change components just beef them up. Not sure how the truck performed but it is 4x4 so it had very limited travel on stock arms. But the point I was making that the coilover does most the work. They did the baja on stock everything except coilovers and reservoir shocks.
 
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Old Mar 26, 2014 | 08:51 PM
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Point taken. I guess, as long as I don't screw up the geometry, I'll have a pretty decent set-up. I hope you get to build your control arms while your building mine. Have you done any thinking on your own shock hoop/tower?
 
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Old Mar 26, 2014 | 10:55 PM
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Mine are almost done :P my shock hoop will be integrated into the engine cage which will eventually be tied into a full cage.
 
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Old Mar 27, 2014 | 10:03 AM
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Originally Posted by projektdirtfab
Mine are almost done :P my shock hoop will be integrated into the engine cage which will eventually be tied into a full cage.
make sure that cage will fit a hemi! Got any pics? That sexy box of hardware from your fb page just became my screen saver.
 
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Old Mar 27, 2014 | 02:01 PM
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My pics wont go public until theyre on the truck. I hate half finished build threads so I want to pull the curtain when its ready.
 
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Old Mar 27, 2014 | 03:16 PM
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Originally Posted by projektdirtfab
My pics wont go public until theyre on the truck. I hate half finished build threads so I want to pull the curtain when its ready.
Feel you. Just like to see as much as I can; helps me with the planning. I guess I could just place my order if I want to see 'm.
 
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Old Mar 27, 2014 | 06:57 PM
  #18  
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So I looked up the part number for the coil springs in the parts manual. They range from 52855080ae up to 52855085ae. Used google's advanced search and found this gem:

ftp://99-103-210-74.lightspeed.livnm...0PO%201014.doc

This looks to be an invoice from the company the manufactured the coils. According to their invoice the lowest spring rate was 80.6n/mm and the highest was 105.1n/mm. According to this website:

http://people.physics.anu.edu.au/~am..._conversio.htm

the conversion from n/mm to lb/in is simply the n/mm x 5.714, so the possible spring rates of the factory coils are anywhere from 460.5lb/in to 600.5lb/in.

This means the the 690 Raybestos are at least a little bit stiffer than factory. 15% higher spring rate and probably a couple hundred more pounds for design load, which isn't as important. They will work for what I have planned though not as good as coilovers. But hey, at 80 bucks they're a bargain.
 
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Old Mar 27, 2014 | 09:47 PM
  #19  
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Nice work. That is a big range. I would assume the higher range is for 4x v8 qc. I feel that the damping is worse than the springs, however.
 
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