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Homebuilt coilover system

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Old Feb 19, 2011 | 05:05 PM
  #81  
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Is the female end actually a bushing?
Old Mar 7, 2011 | 03:06 PM
  #82  
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Hey EZ what ub part numbers did you use on the upper control arms and ball joints? Also I can't find chromoly hex tube anywhere do you have a part number for that also? Thanks Scott
Old Mar 7, 2011 | 05:14 PM
  #83  
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whatup scott!!

part number for ub is #22-0141

for the screw in I used an afco low friction part #20034

For the chromoly hex bar I got it off of amazon of all places. I also used two hardened washers in between the hex bar and shock towers.

use stainless 304 like this, plenty strong
http://www.amazon.com/Stainless-T-30...539563&sr=8-24

let me know how it goes
Old Mar 7, 2011 | 05:22 PM
  #84  
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You know you could get away with using a radius rod and then welding a slug for the bolts to go through.
Old Mar 8, 2011 | 10:38 AM
  #85  
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Thanks we'll see how it goes.Scott
Old Mar 8, 2011 | 03:39 PM
  #86  
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You can also get it on Ebay: http://cgi.ebay.com/06J-304-STAINLES...item20b1b40bf3

If this were an UCA with a spring perch, I'd be hesitant on using stainless but with the shock load relocated to the LCA I would think stainless should be fine to use.
Old Mar 8, 2011 | 05:46 PM
  #87  
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Good ebay find!

even if we were putting a load on the UCA the 304 would be fine. Have you seen what the stock piece looks like? If you had some sort of failure it would be in the spindle before a 1'' thick piece of 304.
Old Mar 9, 2011 | 04:36 PM
  #88  
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True, but the failure location of the hex bar would be at the bolt hole where the bolt attaches it to the shock tower. What was a 1" hex is now significantly less with a 5/8" or whatever size hole.
Old Mar 14, 2011 | 03:19 PM
  #89  
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true true...I wonder how much load is on the uca now with no weight on it. Its only job is to locate the spindle. Probably still a good amount of force when you hit a pothole. Ive been driving my car quite a bit and driving it hard too. Everything has held up great. My rod links seem to being leaking thier oil in the strut rod? cant be good right.
Old Mar 14, 2011 | 03:57 PM
  #90  
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There's more to locating the "spindle" than just holding it from flopping over with the car parked. The loads from cornering and braking can be fairly large too.

Hard cornering tries to pull the outboard UCA outward (the knuckle is trying to pivot as seen in front view about the LCA/LBJ).

Hard braking is trying to pivot the UCA about the front edge of the cross shaft and mainly tries to pull the rear UCA bolt out.

Sometimes you get some of both, sometimes either or both + impact.


Privately (and elsewhere) I've been down this road before. The non-impact loads can easily amount to several hundred lbs or more, and you absolutely must design for a low stress due to the repetitive nature of the loading on metal fatigue.


Norm



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