3 link with upside down leafsprings - JeepForum.com
 
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post #1 of 10 Old 07-05-2012, 07:53 PM Thread Starter
Dre40
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3 link with upside down leafsprings

A friend of mine sent me a pick of a jeep YJ with a three link setup with leaf-springs, but the leaf-spring where cut in half and flipped upside down. has anyone seen this? or seen a write up on it?

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post #2 of 10 Old 07-05-2012, 08:00 PM
fratis
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it used to be very common. dont see it as much. people tend to just use coilovers now.

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post #3 of 10 Old 07-05-2012, 08:02 PM
USMCBuckWild
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I have never seen it with leaves cut in half but I have seen it with full leaves. The front eye used a factory frame mount and the spring rubbed against a specially designed bump stop. The back end was on a spring mount that allows side to side 'twist' of the spring eye. Kinda hard to explain. The wishbone style 3 link allowed it to flex side to side and the drop was amazing. It allows a TREMENDOUS amount of flex, but is absolutely useless on the street. When you hit the brakes, the nose dies and the back end rises up very high. I saw an old straight axle Toyota with this setup and it was on the verge of ridiculous articulation.
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post #4 of 10 Old 07-05-2012, 08:17 PM
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You can buy them out of hot rod parts books. Check out Speedway Motors on line they have them. They have a lot of things that make building easyer.
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post #5 of 10 Old 07-05-2012, 08:40 PM
ltrail
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Its quarter elliptical.

Good flex, nasty manners.

84 xj 350tbi, sm465, 203/205, 60/70. links and other junk.
what size sawzall blades does it take to fit 40's?
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post #6 of 10 Old 07-05-2012, 11:12 PM
moonpie312
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That's old school hotrod stuff right there, what its doing on a lifted jeep I have no idea.
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post #7 of 10 Old 07-05-2012, 11:24 PM
Michaelgoesrawr
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Quote:
Originally Posted by ltrail
Its quarter elliptical.

Good flex, nasty manners.
There was a thread on this a while back too. I think the OP wanted to give it a shot but I remember several people saying the same thing that you did.

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post #8 of 10 Old 07-06-2012, 03:26 AM
fratis
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Quote:
Originally Posted by moonpie312 View Post
That's old school hotrod stuff right there, what its doing on a lifted jeep I have no idea.
like mentioned it used to be very common and works very well. it was even offered in kit form from RE. link geometry will determine manners and performance.

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post #9 of 10 Old 07-06-2012, 09:28 AM
ltrail
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If it's a trail rig I'd go for it. If you wanna drive to work on Fridays be careful. Its a half and half. Links give good travel, springs you can undo and adjust stiffness. Haven't run one personally but have research them for budget flexibility. They seem to unload ugly downhill with the special bumpstop method and they are better when linked to the axle like the picture. This is because the bumpstop is only deflecting the spring, there is nothing limiting droop. If you going downhill and brake the rear can kick you in the ***. If you link the leaf to axle like the pic the spring acts on the axle during up and down travel.

84 xj 350tbi, sm465, 203/205, 60/70. links and other junk.
what size sawzall blades does it take to fit 40's?
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post #10 of 10 Old 07-06-2012, 10:18 AM Thread Starter
Dre40
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Its pretty cool. setup but I think if I was going to go that far I may as well use coil springs, or coil overs...
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