high steer flaw?

[cruiser ken]

So most of the high steer steering arms out there have two holes on the passenger side arm. This seems like a bad design and the reason why the passenger side knuckles fail. The way I look at it, with this design, you have to trasmit the load of turning the driver's tire through the passenger knuckle. In the stock configuration the load is always transfered to the tie rod. I think this is even more true for the 4x4 labs design. I'm not trying to start an arguement about this subject or imply that any of the high steer vendors is making junk (all are quality products) I'd just like to generate some thought and hear your opinion, preferably analysis. From the static load analysis I've done, the 2 hole arms appear to create higher knuckle loads than a single hole arm does. Comments? Thanks.

 

[andrewfarmer]

Although technically there is a higer load at the knuckle (as you say) given the relative moments I would not have thought it was too much greater.

Have run a similar setup on my truck (two variations now) although I'm still 'lo-steer' with no problems at all - knuckle bearings wear evenly both sides.

For me, it was esential - with the amount of lift I have the bump steer was awful due to the std design allowing the relay rod to twist the tie rod - attaching the relay rod direct to the steering arm eliminated about 1/8 turn of the steering wheel in slack - one of the best things I've done.

 

[Isotel]

I have Broken my Studs off with the setup pictured below.. The Studs were Lose


I do think that the 4x4 labs forces some more of the load thru the nuckle. especialy with Ram assist. I havent had any issue with mine since i keep the studs tight, and i still have the Small Stud Pattern..

No bump Steer, and Very Little Play in the wheel

 

[Poser]

From the static load analysis I've done, the 2 hole arms appear to create higher knuckle loads than a single hole arm does. QUOTE]




Please post up your data......

 

[cruiser ken]

Just static load free body diagrams that I drew up on a piece of paper. Shows moments and forces acting on each knuckle. Basically the 4x4 labs arm sees twice the shear force but no increased moment (assuming the holes are equa-distant from the knuckle center). The two hole near the front arm sees about 50% more moment than the other knuckle. The added moment the two hole arms sees is directly related to how much further out on the arm the 2nd hole is.

Isotel, do you have the part numbers for those TREs? Looks like GM 1ton stuff. Thanks.

 

[Isotel]

1 ton tre tie rod end hysteer gm 1ton

i got my Part #'s from this site http://www.pavementsucks.com/tech/steeringupgrade.php

I got My TRE's from Car Quest and it came out to about $120 for all 4.. But i figured they may be a bit better Quality..


(1) ES2233L Tie Rod End ($19.99/ea from AutoZone)
(1) ES2234R Tie Rod End ($29.99/ea from AutoZone)
(1) ES2027L Tie Rod End ($17.99/ea from AutoZone)
(1) ES2026R Tie Rod End ($24.99/ea from AutoZone)

I also got my jam nuts from PSC in denver
2) RJ7818 7/8"-18 Jam Nut ($4.45/ea from Spyder Customs)
(2) LJ7818 7/8"-18 Jam Nut ($4.45/ea from Spyder Customs)

 

[FredTheMonster]

do you have the part numbers for those TREs? Looks like GM 1ton stuff. Thanks.

Ken,
Here is a pic that I find useful when replacing my set-up...