Are shackle reversals true rock finders?

[crushers]

shackle reversal or stock /extended shackles, the location will find the rocks.
the shackle reversal has a fixed point up front vs the pivioting shackle so it will stand up to the rocks better...

i am not a fan of SR

the proffits kit, how do they compensate for the caster /camber change due to the tilting front axle?

 

[lcwizard]

Since they list these parts along with a spring over kit I'll assume that a cut and turn is in order. They understand the geometry there and wouldn't tell you to use it in a spring under without correcting caster.

shackle reversal or stock /extended shackles, the location will find the rocks.
the shackle reversal has a fixed point up front vs the pivioting shackle so it will stand up to the rocks better...

i am not a fan of SR

the proffits kit, how do they compensate for the caster /camber change due to the tilting front axle?

 

[crushers]

ah, nobody mentioned it was a SOA kit... otherwise the angles would be rediculious...

 

[zuluzeugma]

Thought: Mini-trucks came stock SR. Can't be all that bad. I went SR on my FJ55 and never looked back. Those rock finding antenas sucked ass...

Take luck.

 

[Mace]

Question, can you use the stock front drive line with the proffitts kit? can you send me a link to their kit?

Nope, not enough slip on a front DL to deal with a SR in a SO.

IMHO, a SR is just another thing to do. It is not exactly a wonder cure for anything.

It is nice not to beat the shackles on rocks tho.

 

[vtcruiser60]

My understanding of the Profitts SR kit, for SUA vehicles, is that you also need to extend the rear shackle mildly to level the vehicle and create the right caster. I don't think shims are needed.

 

[crushers]

there is no way that kit will work on a SUA...
you will need to block that piece to make the springs align properly... SOA, then i can understand the purpose...

 

[vtcruiser60]

Hmmmmm......sounds like we need to have Jeremiah join the chat...

Here is a copy from his website:

Weld-On Shackle Reversal Kit
Spring-under shackle reversal kit. Includes extended rear shackle. Laser cut 1/4" thick. Tucked in higher than comparable shackle reversal kits to help eliminate the "rock finder" aspect of most spring-under-axle shackle reversal kits. Adds 2" of lift allowing you to run 33" tires with no additional lift. $150. We can perform a shackle reversal (including parts and labor) to your Land Cruiser for $450. Shocks not included.

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[JohnnyC]

for those that do have the SR "rock finders" already on their rigs...you can always weld a plate on the front of them...inturn making them skid plates...then who cares how much you smack them

 

[crushers]

okay, so you are saying it is okay to drive the front of the spring up 4" and extend the rear of it down what ever the shackle is and the caster and camber stays the same...

s u r e ...

sorry, there has to be more to it than that or the diff will be rotated... i should know, i did this exact idea on my 40 decades ago.

 

[vtcruiser60]

First, I am not saying anything......i am asking........there is a difference.

I just ASKED Proffits for clarification. Yes, their kit is a weld on kit. You are provided a new hanger for up front. You cut the old one off, and swap it to the rear of the front springs. They provide you with a new set of shackles for the rear springs to level the vehicle. Pinion angles do not need to be reset, according to them.....

I am not buying the conventional wisdom that SR are any more of a true rock finder than the original shackle set up....a bit lower perhaps, but with larger tires this seems to be mitigated.

 

[crushers]

not arguing here, just trying to understand HOW that system could work...

 

[Mace]

Look at the pic linked..

It is the proverbial rock finder

 

[camcruiser13]

depends on the kit and instalation i guess

 

[crushers]

oh i know how a SR works, i just can not see how Proffits works on SUA trucks...

 

[lcwizard]

I think you're looking at the wrong hanger, check out the sua hanger in this link


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oh i know how a SR works, i just can not see how Proffits works on SUA trucks...

 

[crushers]

this is the one that i thought everyoen was talking about...
the one in the link makes much more sense...

i am a fan of the proffitts cruisers kit.

the one in the link makes much more sense...

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[Teebag]

Does anyone have any more pictures of it fitted?

 

[lcwizard]

You are right on this crusher but, Proffits bracket is probably taller than it looks, it could be camera angle. The rest of the caster correction can be corrected with a caster shim. Blocking down the front of the spring 1.25" is about three degrees of caster change. The MAF kit locates the front eyelet center
5.5" from the bottom of the frame. With a 3/4" over stock length shackle, the axle sits at 6 degrees positive caster, pointing the pinion down and binding the ujoint. A 4 degree caster shim is included to bring the caster back to 2 degrees positive where road manners are very much improved and still allows 4" total lift without bind.
Any more than 4" lift , assuming you kept a 1~2 degree positive caster setting, and the axle should be cut and turned to avoid binding at full droop and risk of breaking a pinion.

If the rock is big enough something will find it.

 

[vtcruiser60]

I updated the photo in the initial post to alleviate any confusion..........

Does anyone know someone at Proffits that can help clarify the concerns here? This thread had grown away from the initial rock finder question...towards whether SUA rigs can enjoy a SR without shims.