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dktool
November 8th, 2017, 11:35
I have found that with my laid down shackle angle combined with the length of the shackle and the overall range of motion of the shackle from full droop to full bump, the oem clevite style (Moog) bushings get twisted up and don't live a very long life.

I know poly does not offer the lateral deflection that clevite does but the opposite is also true, poly = good rotation.

So, is there any good answer besides replacing bushing frequently ?

Here is comes ........ What if, a guy was able to incorporate a Johnny Joint at the rear leaf to shackle position ??

I put on my fire suite so flame as needed.

sinat01
November 8th, 2017, 11:55
I actually think their is a company that makes leaf springs like that. or check out boostwerks comp shackles

cwyman6
November 8th, 2017, 13:45
I think its alca springs use a Johnny joint at the frame side.

sinat01
November 8th, 2017, 16:21
http://www.alcanspring.com/orbit-eye.htm

donthelegend
November 8th, 2017, 20:42
Boostwerks comp shackles are the other, more recent manufacturer that uses a flex joint combined with a bushing. Quite a few people running them here, myself included. They work as advertised.

Sent from my Moto G (5) Plus using Tapatalk

Demonoid369
November 10th, 2017, 02:38
Has anyone tried fitting standard flex joints into a pair of xj leaf springs?
I can't imagine alca is the only people to do this or try

Boostwerks.com
November 10th, 2017, 11:17
Has anyone tried fitting standard flex joints into a pair of xj leaf springs?
I can't imagine alca is the only people to do this or try

The problem is with the chassis side leaf mount. It isn't wide enough to allow the leaf to twist. Nothing that some custom fab wouldn't solve however.

dktool
November 10th, 2017, 17:05
To Boost Works;
Your shackle has the live joint at the frame end so does it have a poly bushing at the leaf end ?

TRCM
November 10th, 2017, 21:25
To Boost Works;
Your shackle has the live joint at the frame end so does it have a poly bushing at the leaf end ?

The bushings are in the spring eye, not the shackle, so whatever is in your spring will be what is in the spring end of the boostwerks shackle.

YOU can see here.......http://www.boostwerksengineering.com/BWE-Comp-Shackles-_p_24.html


.

dktool
November 11th, 2017, 18:51
To Boost Works;
Your shackle has the live joint at the frame end so does it have a poly bushing at the leaf end ?

I meant to ask, what would you advise to use on the spring end ?
Seems like Poly would be the choice for the rotational advantage given that the lateral deflection is now not a factor due to having a live joint up top.

Boostwerks.com
November 12th, 2017, 12:59
I meant to ask, what would you advise to use on the spring end ?
Seems like Poly would be the choice for the rotational advantage given that the lateral deflection is now not a factor due to having a live joint up top.

Yup, poly would be my choice for the reasons you gave. I'm running poly on both ends of my leafs.

trippled
November 12th, 2017, 17:28
I meant to ask, what would you advise to use on the spring end ?
Seems like Poly would be the choice for the rotational advantage given that the lateral deflection is now not a factor due to having a live joint up top.

I'm planning on going to poly for that reason and they can be changed much faster than having to remove and press in conventional bushings. There's not much price difference between them as well.