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see pics. The spindle doesn’t quite sit flush on the ball joint mounting plate; there’s a small gap there. We think when the nut is tightened on there it’s tweaking the spindle and stressing it.
It's not the gap that's causing it. It's the fact that the load is being moved to a weaker part of the spindle because you are using the ball joint to correct to much camber and roll that the vertical load is not in the right place. If you are looking for more camber and roll center direction them switching to offset bushings in the upper arms and doing the roll center correction on the steering rack will help eliminate the issues
It's not the gap that's causing it. It's the fact that the load is being moved to a weaker part of the spindle because you are using the ball joint to correct to much camber and roll that the vertical load is not in the right place. If you are looking for more camber and roll center direction them switching to offset bushings in the upper arms and doing the roll center correction on the steering rack will help eliminate the issues
The vertical load is still going through the same point on the spindle, the spindle’s mating surface is fully engaged with the ball join plate assuming that gap is closed. However with the balljoint further out from the spindle there will be a larger torque component to that force, and I think that’s what you are getting at. You may very well be right. My only hesitation is that we’re not the only ones running these, or similarly designed, ball joints and breaking front spindles doesn’t appear to be a common problem.
Second, with regard to the roll center correction on the steering rack - I may be showing my ignorance here but how would you correct roll-center using the steering rack? Did you mean bump steer correction?
I have the Hardrace RCA and haven't had this issue. However, mine are not adjustable like yours. Just looking at the photos, your failure is because of the torque you're putting on the spindle.
Go to a fixed lower RCA, then if you need more camber get it from the upper A-arm by either offset bushings or adjustable upper balljoints from SPC.
As for the Ballade kit, I have a few installed on my car but not the entire kit. I have done 12 track days since install and they still move free. Most of the companies don't manufacture their own bearings. Try giving them a call and see who the supplier is, then do research on their parts.
Got ballads spherical compliance and buddyclub lower ball joint too.
Although i also have the spc upper ball joint. For some reason my bbk rotors were hiting my lower control arm. So with those 2 ajustable ball joints i pushed the spindle away from the control arm to avoid that contact.
09-18-2018, 07:50 PM
