double shackle setup

[penski61]

how well does a double shackle work and would there be any down side to running them ? i know alot of people dont like the revolver shackles because of busting welds and other quality issues

also how would i go about doin a double shackle setup , is it something i put together or can you buy , thanks

oh im running 63" chevy springs

[Ryan Gee]

On 63's I don't think they make as much a difference. On a shorter spring, which the shackle is closer to the axle, they probably do a little better.

Over the last few years I have come to realize it is more about the size of the tire, gearing, and the weight of the rig. Sure those shackles make the champ of the ramp out of a vehicle. But honestly the guys without will go down the same trails, have the same smiles, and maybe lift a tire a few times.

The moral of the story is everyone will be at the end of the trail holding on to a beer and the end of the day. Fun had by all.... :beer:

[Houdini]

On 63's I don't think they make as much a difference. On a shorter spring, which the shackle is closer to the axle, they probably do a little better.

what? i am not following you.

aaron, my buddy matt ran a set of these on his old sami. he ran them front and rear and they performed very well. i don't think i'd recommend them for on road use unless you could lock the top shackle down (to the frame) for on road use. they would make a lot of noice on road banging on and off the frame and i'd also be afraid they could open up in a turn and surprise you a little. if you do go this way....longer shocks will be in order.

http://29ivcw.bay.livefilestore.com/y1pCRT92UrAuBNky_WnUCHrGH7MoMG65lAhJXfxDiqiDGxjFQM dGZM6z1OxziTzHW9scI9fn8e82eQ3hfoLavkLTw/Rear-Missing-Link.jpg

[Ryan Gee]

what? i am not following you.

If you move the end of a 20 foot crow bar 6 inches or a 20 inch crow bar 6 inches. Which one turns the bolt more?

The same thing happens comparing a short or long leaf spring.

[1crazyxterra]

i thought i had more pics of it flexed but i dont know what happend to them??
here you can see it open just a hair..
http://i339.photobucket.com/albums/n447/1bigxterra/DSC_0570.jpg
heres like 3 inches off the frame
http://i339.photobucket.com/albums/n447/1bigxterra/101_0769.jpg
and heres how it looks on the ground
http://i339.photobucket.com/albums/n447/1bigxterra/101_0782.jpg
with this setup i have never really lifted a tire off the ground but if i was gonna di it again i would use some chevy shackles lengthened 3.5 inches grind the end of the shackle smooth and bolt up the autozone shackles i love this setup tho!!!!!!!!!! :cool: :cool: :cool: :cool:

[Houdini]

If you move the end of a 20 foot crow bar 6 inches or a 20 inch crow bar 6 inches. Which one turns the bolt more?

The same thing happens comparing a short or long leaf spring.

i understand what you are saying, but i don't think that anology is relavent.

think of it this way.

longer spring = more flex.
longer shackle = more flex.
longer spring + long shackle = even more flex.

[Ryan Gee]

Yes longer springs flex more... 63's do wonderfully by themselves!

However, If a guy is stuck with short springs these shackles make a better difference. As my statement said....

Obviously it is all in what a person is after. This conversation could go on and on and on and on. I just made a simple statement and didn't intend to cut into someones setup. If champ of the ramp is what floats your boat.. yeehaa!

[JeffW]

Revolvers and double shackles are garbage. They add flex, but not useful flex.

[Bill Potter]

I have several friends that never un-pin them from the frame.

You really want a nice progressive spring rate across your complete axle travel....not the hard spring rate to ZERO spring rate these things give.

Are they better then nothing?

Maybe

but there are better ways!

[Houdini]

i've seen them work well and a lot of the trails we run over here....any flex is better than no flex. its nice to have an axle on the ground and any traction you can grab. i think they can be ran with little trouble if its set up right.

they do remind me of (i think its called) 3/4 eliptical and i can't even imagine running that setup. just seems ready to fail.

[JeffW]

I have several friends that never un-pin them from the frame.

You really want a nice progressive spring rate across your complete axle travel....not the hard spring rate to ZERO spring rate these things give.

Are they better then nothing?

Maybe

but there are better ways!

Perfect common sense!...

[penski61]

i kinda figured thats the response i would get

so if im looking for a good way to get a little more droop , would i be able to do this by adding a leaf to the pack or would it be better to use a longer shackle? i think im running a 6" shackle right now

and yeah i know id gain a little height by doin either of the above

[Houdini]

i don't know if adding a leaf would make any difference in droop. longer shackle may help, but with a longer shackle if the shackle get's closer to verticle, you are going to actually get less droop. your ride height shackle angle and shackle length is going to dictate the amount of "swing" it has and affect droop.

a shackle angle like this / is going to swing down and create some droop. a more verticle shackle angle like this i is already fully extended down and thus will not swing down any more and create more droop.

[Alpine Spirit]

Wheel what you like... this debate goes on forever

[itsme1738]

Wow Did Jeff Really Agree With Bill?

[bogof]

What about some johnny joint shackle hangers? That would relieve the stress of twisting the leaf, and you could use a longer shackle and move the mount forward.

That is what I plan on doing anyway.

[JeffW]

Wow Did Jeff Really Agree With Bill?

Damn right.

People who run revolvers often have to compensate (for the same lift) with extra leafs. This gives them less useful flex ('dynamic range') and trades it for an unloading point that is dangerous on and off road.

http://www.whitescarver.com/jeffscarver/Xterra/Revolver_Shackles.JPG

[Ryan Gee]

What about some johnny joint shackle hangers?

The axle is never in the center thus it dogwalks most of the time.

However I love them... this setup also has inboarded springs. The rear springs on the HB were inboarded until they flexed the same as the front.

Those are 37 inch tires... for distance relationship.

http://i561.photobucket.com/albums/ss55/nissansas/Hard%20Body/255866568837.jpg

[Houdini]

chris running daniel at ure yesterday. he's been using these revolvers for something like 5 years without issue.

http://pic90.picturetrail.com/VOL2148/3057962/22513018/374000580.jpg

[CurleyMan]

I'm shocked no one has mentioned suspension steer, off camber unloading and poor pinion angles. Some people don't mind 3/4 elliptical, revolvers or double shackles. However every single rig equipped with one of the three suffers from all the above problems (I can prove it). I know because I have a 3/4 elliptical setup and it's just simple geometry. The negative effects aren't as bad if your using long springs but they are still present. Do whatever you wish it's your machine but I personally can't wait to 4 link my machine.

[loren]

jesus -H ceerist Ryan, are ya shooting for a 45deg articulation!!!pretty quick you'll have the Dyson ball suspension underneath that thing, Oh $h!t, I started something!!