load specs for OEM-type ball joints

[JayMaechtlen]

I'd like to find load ratings and specs for various ball joints-

I'm reworking a suspension and would like the spring loading on the lower arm instead of strut/upper arm.
I'm sure the original lower ball joint isn't rated to carry spring forces, so maybe I can find a standard /similar unit that is.

Suggestions?

Jay Maechtlen

http://www.laserpubs.com/techcomm

 

[evelrod]

Jay, I had an old Moog pamphlet from the 60's that had a complete breakdown of ball joints and tie rod ends including, if memory serves, load capacities. I don't have it any longer but, it did exist and therefor you might try Moog's tech line. Also, Summit Racing has a chassis tech that I have found useful in the past. Stock car stuff, but that may be more relevant to your project.
My "ball joint" difficulties in the past were more often in the method of mounting as opposed to the actual load rating of the joint. If I can help, give me a call.

Rod

 

[GregLocock]

One option would be to use Aurora heim joints instead, you can buy the naked SBJ, you don't have to buy a tie rod. They have a complete catalogue, and several grades in each size.

You'll be changing the direction of the major laod path, this is non triival. Incidentally if you use a tie rod make sure that you have the ball joint in compression, they are significantly weaker in tension.

Cheers

Greg Locock


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[GregLocock]

Sorry, rod end not tierod (you can tell what I'm working on)
Here's some numbers

http://www.automotive-bearing.com/industrial_bearings/ball_joint_rod_ends.htm

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

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[JayMaechtlen]

Yes, I would be changing the load path.
I recall some 50's and 60's American cars had lower ball joints carrying the load with studs in tension.
A brute-force approach might be to choose one from a medium to large car and just modify the LCA and/or stud taper to make it fit.

Nobody will ever mistake this vehicle for stock anything, so I don't have to worry about tripping up future owners.

Food for thought, Thanks.


Jay Maechtlen

http://www.laserpubs.com/techcomm