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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

sas shackel angle help

Old Jun 25, 2012 | 12:24 AM
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sas shackel angle help

taced up my hanger then drilled the wholes for the frame tubes a little bit foward from center under the body mount
it looked like the shackles with no weight had about -10* so i figured with weight it would have about 15*. nope way to much, my hanger is flush originally had it 3/4 foward, if i move it back to 3/4 foward would it make a big impact on the shackle angle?

this is what it looks like with weight(kinda hard to see)


and no weight
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Old Jun 25, 2012 | 05:09 AM
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waskillywabbit's Avatar
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First glance shackle looked completely flat. Zoomed in and it does look ok.

:wabbit2:

Last edited by waskillywabbit; Jun 25, 2012 at 05:35 AM.
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Old Jun 25, 2012 | 05:21 AM
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That looks like an ok shackle angle to me.

Moving the hanger forward will get the angle closer to where you want it.
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Old Jun 25, 2012 | 08:22 AM
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Originally Posted by waskillywabbit
First glance shackle looked completely flat. Zoomed in and it does look ok.

:wabbit2:
i think its the angle the pictures at but its a pretty extream angle for just the weight being on it
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Old Jun 25, 2012 | 08:36 AM
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Looks not to bad to me.... You planning on adding some leaves to those RUF's
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Old Jun 25, 2012 | 08:48 AM
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i feel like it will it the body mount with a decent amount of flex
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Old Jun 25, 2012 | 02:31 PM
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"angle" is just a rule of thumb the angle itself doesnt mean Jack. To get the most of a leaf spring pack you need a shackle that will let it fully drop and fully compress to "flat"... ie no inversion. Then place the shackle hanging point at the optimum distance from the forward spring hanger.

Your springs under weight of your front end are nearly flat which is fine. You could actually move your front hangar further back 1/2". A nice vertical shackle at full droop is ideal. But I'd leave it. A little forward swing of the shackle is fine

Last edited by drew303; Jun 25, 2012 at 02:34 PM.
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Old Jun 25, 2012 | 02:55 PM
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You gonna run that overload spring? If the shackle hit the mount down the road a set of boomerangs will help.
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Old Jun 25, 2012 | 03:20 PM
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It wont hit the mount. Its as about far back as it will ever go... spring will invert and pull the shackle back forward
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Old Jun 25, 2012 | 03:56 PM
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Originally Posted by dropzone
You gonna run that overload spring? If the shackle hit the mount down the road a set of boomerangs will help.
not running the overload spring. basically did this swap in 3 days. next weekend im going to take it all apart and clean it up a bit.
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