Author Topic: Rear shackle angle is now Flat! (Read 8528 times)

GreenYoterKrawler · « **on:** May 05, 2015, 04:40:19 AM »

when i first did my chevy 63 rear springs, we installed the rear hangers at the Very back of the fram mostly on the single peice of frame ar the End...
well i bought TG creeper joints to replace the rear hangers and fix the frame cracking .
i had to move the joint forward due to rust.
The resulting shackle angle is Near flat.

My shackles measure 6 1/4 eye to eye.
if i install a 7" shackle, Will it Pick up the angle like im thinking? Or will it sag more

I can make any size shackle to fix this without moving the rear axle forward (i.e. front hanger)

blackdiamond · « **Reply #1 on:** May 05, 2015, 06:34:50 AM »

I am barely qualified to comment on this, but I doubt that extending the shackle 3/4 inch will resolve a truly flat shackle angle.

How far did you move the shackle forward? You may have to fix/extend the frame to correct the shackle angle.

84Flatbed · « **Reply #2 on:** May 05, 2015, 06:43:23 PM »

Longer shackles would pick up the angle but I wouldn't expect 3/4" or even 1" longer shackle to correct the angle enough if it is flat. Shorter leafs would fix it but finding the right length (without being too short) might be tricky or expensive. What do you measure front spring hanger to rear creeper joint, hole to hole?

jangelfire · « **Reply #3 on:** May 05, 2015, 07:37:59 PM »

Put new junkyard f150s on mine today.mine were so sagged out and inverted, i got 4" of lift and almost the same shackle angle.needless to say im installing bumpstops this weekend. Crazy how springs can keep the eye to eye length and bend and flex just loosing ride and lift

GreenYoterKrawler · « **Reply #4 on:** May 05, 2015, 08:49:52 PM »

Im thinking of cutting say 9" shackles out 3/8 plate. And go from there. I can cut off excess and I'd think at least 3+" would force it to angle up to compensate for a longer peice in the same given space

blackdiamond · « **Reply #5 on:** May 05, 2015, 08:58:29 PM »

Quote from: GreenYoterKrawler on May 05, 2015, 08:49:52 PM

Im thinking of cutting say 9" shackles out 3/8 plate. And go from there. I can cut off excess and I'd think at least 3+" would force it to angle up to compensate for a longer peice in the same given space

You don't want to be that guy do you? Ghetto...

jangelfire · « **Reply #6 on:** May 05, 2015, 09:10:19 PM »

Amen

jangelfire · « **Reply #7 on:** May 05, 2015, 09:12:53 PM »

Ive studied the 63s.bobbed=double shackle in most cases.my f150 springs moved the hanger 9" forward.they are like 57".

GreenYoterKrawler · « **Reply #8 on:** May 05, 2015, 09:54:31 PM »

All shackles are: 2 pecies of 1/4" stock of flat bar cut out and a small peice of c channel welded in between Sometimes.
If i have acces to a plasma cutter a d the material, ive seen 8" shackles Droop..

jangelfire · « **Reply #9 on:** May 05, 2015, 10:06:04 PM »

Hmmm... Mine are 3/8" plate

jangelfire · « **Reply #10 on:** May 05, 2015, 10:08:35 PM »

Can crusher

84Flatbed · « **Reply #11 on:** May 06, 2015, 01:30:35 PM »

Quote from: GreenYoterKrawler on May 05, 2015, 08:49:52 PM

Im thinking of cutting say 9" shackles out 3/8 plate. And go from there. I can cut off excess and I'd think at least 3+" would force it to angle up to compensate for a longer peice in the same given space

Someone mentioned double shackles, that would work and probably be better than really long shackles.

jangelfire · « **Reply #12 on:** May 06, 2015, 02:00:59 PM »

Lotsa threads on pirate about the double setup

valon5150 · « **Reply #13 on:** May 06, 2015, 02:23:13 PM »

longer shackles will lessen your angle. i started out my new truck with ~5.5" shackles and 45* angle. bumped up to 7" for a little more height and now my angle is ~30*. might go to double shackle with it. my last truck i did double shackles and liked them a lot.

GreenYoterKrawler · « **Reply #14 on:** May 06, 2015, 09:36:49 PM »

Please clarify for me,
Don't long lift shackles Steepen the angle, making the shackle more vertical?

My toyota is very light especially in the rear, i already have the rears pop off the ground Very high, i know that doubles are going to unload at some point and the catapult action. No thanks

jangelfire · « **Reply #15 on:** May 06, 2015, 09:58:55 PM »

Then figure it out man. Many have played this game.if you are gonna re-invent the wheel, i will follow along all the way.bobbed+63s=double shackle.thats why i have f150 springs.they are pretty badass.face the facts or change the industry.either way im not trying to be a c sucker

84Flatbed · « **Reply #16 on:** May 06, 2015, 10:19:57 PM »

I don't have a double shackle setup but I would do it if need be. Ive heard from enough people using them that have had zero issues with unloading, daily driving and heavy wheeling. If your not happy with the long shackles you have a few other options.

jangelfire · « **Reply #17 on:** May 06, 2015, 10:38:50 PM »

Longer shackles=death wobble from hell.6" tops IMO

4-lo · « **Reply #18 on:** May 07, 2015, 08:24:50 AM »

Go boomerang Shackles.

toyodaaddict · « **Reply #19 on:** May 07, 2015, 08:54:00 AM »

Quote from: GreenYoterKrawler on May 06, 2015, 09:36:49 PM

Please clarify for me,
Don't long lift shackles Steepen the angle, making the shackle more vertical?

My toyota is very light especially in the rear, i already have the rears pop off the ground Very high, i know that doubles are going to unload at some point and the catapult action. No thanks

Yes, a longer shackle will bring the angle closer to 90*. I wouldnt worry to much about using a bit longer shackle in the rear. I dont think it will cause any real problems and if it does its easy to change. You could also go with the double shackle , but bolt or weld the top shackle to the frame so it acts like a single shackle. Or probably the best option, just extend the back of your frame a bit. I think those are your choices if your set on running 63s.

84Flatbed · « **Reply #20 on:** May 07, 2015, 09:11:01 AM »

Quote from: 4xsports on May 07, 2015, 08:24:50 AM

Go boomerang Shackles.

Doesn't change anything.

GreenYoterKrawler · « **Reply #21 on:** May 08, 2015, 04:52:21 PM »

Thanks toyaddict, looks like im going to fab up some 8+" shackles to pick up the angle.
especially it being in the rear, and i dont get death wobble with everything been gone through, knuckles, steering, and front suspension. Death wobble is notorious from poor steering and knuckle maintenance, and if you get it from your Springs Something is not setup right or you literally have No bushings

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