Custom Boomerang Shackles?

Started by rednk1980, March 27, 2007, 12:07:18 AM

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rednk1980

I came up with an idea to solve my problem of moving the rear shackle mount back two inches. I designed a boomerang shackle that takes up for the loss of 2 inches and doesn't move your axle forward any. Let me know what you guys think about this design i need some serious feedback on these to decide wether or not to build these or if im just going to waste my time. I cant extend the frame! So dont ask. Im going to use 3/8 plate to build these out of. I set a diagram up of how the shackle would look at different shackle angles.
Red = 0* meaning no weight on the spring
Blue = 22* IMO the perfect shackle angle with the weight of the rig on it and broken in
Green = 45* I think this is completely flexed out but probable wrong.
HOLD ON TIGHT! :driving: :hammerhead:
1983 Toyota SR5 long box bobbed 17" doved 14" bed cage, 22re, w56 tranny, working on dual cases 23 spline 4.70 twin sticks driveline disco. Dana 44 front, Dana 60 rear disk brakes and ff.

MiniSimp

Or you could just buy them.
If you have the resources to build them then do it.

rednk1980

Yeah i thought about that but do they make them to where the eye is two inches back.
HOLD ON TIGHT! :driving: :hammerhead:
1983 Toyota SR5 long box bobbed 17" doved 14" bed cage, 22re, w56 tranny, working on dual cases 23 spline 4.70 twin sticks driveline disco. Dana 44 front, Dana 60 rear disk brakes and ff.

alwayzbroken

I don't understand what you are gaining? You will still have the same shackle angle, but it will just look differant. The only thing you gain is clearance, like on the front when you have a body mount that limits travel. I don't think the lines you have drawn to give your shackle angle are correct either. I am no engineer so I could be wrong. You will only fool yourself into thinking your shackle angle is differant. I have added the lines that are correct. Your red line will not happen with no weight on the spring. The bend is irrelevent, the angle will only travel in a straight line. Look at my boomerang shackles with no weight and notice how they act. That should clear things up.
If you still have control you aren't going fast enough

kiyul4130

i agree with alwaysbroken. its just an illusion i think. the metal is just cut in a different shape but the angle is still the same no matter what. its understandable what your trying to accomplish though. i have to move mine back like 2" as well.
-kiyul-
92 1 ton ex cab, marlin dual ultimates, 42 iroks, hydro assist, flat bellied, linked and more...
ECV 7-11

KYOTA FOREVER

rednk1980

ahhh i see now thanks guys now i just have to start from square one again.
HOLD ON TIGHT! :driving: :hammerhead:
1983 Toyota SR5 long box bobbed 17" doved 14" bed cage, 22re, w56 tranny, working on dual cases 23 spline 4.70 twin sticks driveline disco. Dana 44 front, Dana 60 rear disk brakes and ff.

alwayzbroken

Just get longer shackles. The longer shackle will make your angle more vertical. You will get a lot more drop and not have to relocate the mount.
If you still have control you aren't going fast enough

hitechredneck

i was thinking about banana shackles. they look cool function well i think. mc 4 inch springs 4.5 standard shackles, i have no problems. but what i found if you mess with something too much you end up making your build better. 3 years on the same truck. the banana shackles look very interesting though. i might try and make them.   :)