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  #21  
Old 01-01-2009, 12:32 PM
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pictures for those who were curious



more pictures underneath here:
http://jubileejeeps.org/tech/soaluna/index.htm
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Ran when parked.
http://jubileejeeps.org/quadratrac
88 GW, 401/727/208, 5" lift, D44s/4.10s/locked up, 35s and a few Evil Twin mods, http://eviltwinfab.com and a few TT's Fabworks mods, http://www.ttsfabworks.com
76 401 Wag, 77 401 Wag, 77 401 J20
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  #22  
Old 01-01-2009, 07:44 PM
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From the looks of it. It looks like they simply took the stock shackle off the front, bolted the spring to the stock hanger, and then stuck the shackle on the rear hanger.
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  #23  
Old 01-01-2009, 07:48 PM
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Flint, do you have any side profile pics that show your at rest pinon angle?
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  #24  
Old 01-02-2009, 08:21 AM
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fulsizjeep fulsizjeep is offline
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Quote:
Originally Posted by Dmntxn77
Flint, do you have any side profile pics that show your at rest pinon angle?
not yet, but can get a couple this weekend
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Ran when parked.
http://jubileejeeps.org/quadratrac
88 GW, 401/727/208, 5" lift, D44s/4.10s/locked up, 35s and a few Evil Twin mods, http://eviltwinfab.com and a few TT's Fabworks mods, http://www.ttsfabworks.com
76 401 Wag, 77 401 Wag, 77 401 J20
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  #25  
Old 01-02-2009, 08:45 AM
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Thanks for the pics flint!
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  #26  
Old 01-02-2009, 06:30 PM
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so they just put the shackle on the other end. they must have adjusted the SOA perches for the severe increase in caster..... or.... maybe that's why its so scary to drive.

Al
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  #27  
Old 01-02-2009, 06:46 PM
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Quote:
Originally Posted by AlsChopShop
so they just put the shackle on the other end. they must have adjusted the SOA perches for the severe increase in caster..... or.... maybe that's why its so scary to drive.

Al

Ya know, I was thinking the same thing. Weather or not they did this before or after the SOA, and weather or not they did anything to correct it. If this is in fact the way they did it. Because like you said, that could be why it is so squirly to drive.
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  #28  
Old 01-02-2009, 08:03 PM
guishe guishe is offline
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I dont know much about this little things. I just like to read.
And also like to draw, so I guess that if you want to reverse the shackle and keep the original caster and angle of the springs, you should add something like the red piece in the picture.
Axle will go about 1.5" forward, and you will add about 2" high at the same time.
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  #29  
Old 01-02-2009, 09:36 PM
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Dmntxn77 Dmntxn77 is offline
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Nice work... BUT, you would want that shackle facing 30 or so degree back, not forward...
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  #30  
Old 01-02-2009, 10:02 PM
guishe guishe is offline
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AS I said... I dont know a lot ... but i'm in the same process you are... and I found a lot of articles in which the set up the shackle angle to the front... here is a couple... (in the second, look at the movement in the spring). They are not talking about fsj, but I think it should be the same.
In case you are right, changing the angle wont change the high, just the "forward movement" (it would be "backward") And excuse the posible grammatical mistakes my english is kinda primitive

http://www.4wheeloffroad.com/techart.../photo_06.html

http://jeep.off-road.com:80/jeep/dat...281/rarch2.jpg

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  #31  
Old 01-02-2009, 10:59 PM
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Dmntxn77 Dmntxn77 is offline
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Yeah, I can picture it working either way I guess.. It seems that with the shackle forward, you would be at risk of getting it pinned forward when recovering from a droop condition...

Dunno really... Ive never done one, but in my head, it seems that facing back would be the better option...
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  #32  
Old 01-02-2009, 11:32 PM
guishe guishe is offline
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I think that the arch in the springs counts... in the images I have with flat springs, the shacles is at 0°, or "negative" (as in the pictures from fulsizejeep, which are just as you mention).
With lift springs (4" or more) I´ve seen as in my draw. But I dont know if they could go flat forward as you said. Perhaps a more conservative angle would work better. With so many opinions in this issue, seems difficult to find a definitive word about this question.
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  #33  
Old 01-03-2009, 04:18 PM
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better view of shackle and pinion angle

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Flint
Ran when parked.
http://jubileejeeps.org/quadratrac
88 GW, 401/727/208, 5" lift, D44s/4.10s/locked up, 35s and a few Evil Twin mods, http://eviltwinfab.com and a few TT's Fabworks mods, http://www.ttsfabworks.com
76 401 Wag, 77 401 Wag, 77 401 J20
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  #34  
Old 01-04-2009, 05:42 PM
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Wow not much compression travel there eh? ever have probles with it bottoming out?
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  #35  
Old 01-04-2009, 05:49 PM
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Yep Flint, that accounts for the scary handling... Your caster and camber are probably WAY off.
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  #36  
Old 01-04-2009, 09:38 PM
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Quote:
Originally Posted by Dmntxn77


Yep Flint, that accounts for the scary handling... Your caster and camber are probably WAY off.

Nah looks to me like the c's were cut and rotated to correct that. i think its the lack of steering correction that make his handling bad. No DPA or highsteer to correct it.
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  #37  
Old 01-04-2009, 11:16 PM
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C. Boyer C. Boyer is offline
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Quote:
Originally Posted by JeepsAndGuns
From the looks of it. It looks like they simply took the stock shackle off the front, bolted the spring to the stock hanger, and then stuck the shackle on the rear hanger.

That's what I did and the smoothness is insane. Remove the front driveshaft and have it fabricated so it doesnen't bottom out. I did that too. You have to measure the compression and droop, NOT JUST YOKE TO YOKE. The 78 has 12-14 inches of wheel travel so you may have to cut the rear of the front fender a little bit. It drives strait as an arrow, on and of road. Through whoops it's in an insane difference!

Whatever you're into
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  #38  
Old 01-05-2009, 07:02 AM
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4x4fEvEr 4x4fEvEr is offline
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I'm getting a kit for a yj to put on mine hopefully be able to start it in two weeks. I read in petersens this month on a shackle flip to set the rear shackle at 60degrees with no weight on if course
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  #39  
Old 01-05-2009, 08:07 AM
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fulsizjeep fulsizjeep is offline
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Well, thanks to this exercise, I realized that drive shaft is too long. I did not notice until I resized the picture. We have not put this one through too much difficult terrain but had never heard or felt it bottom out. Something else to change when the QT & adapter get changed out this spring. We have some rocks here I can exercise it on and see how much travel there is to the rear. The drive shaft was new in 2003. The C were rotated but I don't know how much.
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Flint
Ran when parked.
http://jubileejeeps.org/quadratrac
88 GW, 401/727/208, 5" lift, D44s/4.10s/locked up, 35s and a few Evil Twin mods, http://eviltwinfab.com and a few TT's Fabworks mods, http://www.ttsfabworks.com
76 401 Wag, 77 401 Wag, 77 401 J20
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  #40  
Old 01-05-2009, 09:16 AM
guishe guishe is offline
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Quote:
Originally Posted by 4x4fEvEr
I read in petersens this month on a shackle flip to set the rear shackle at 60degrees with no weight on if course

It seems that this answers the question of the 30 degrees forward/backwards? ... the shackle is set in the position I mention without weight, whit springs extended; and then with the weight as the springs get a bit compressed. the shackle goes backwards, as you said...
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