Hey,

I'm in the process of designing some high-steer arms for my SAS.

Are the cone washers that go on the knuckle studs neccessary?

It seems to me that if I drilled I just machined them with straight holes and used a combination of lock washers, lock nuts, and lock-tite then I would probably be ok against vibrations.

I assume the cone washers are there to keep the arm from moving around under the nuts, but if I drilled the holes to a better fit than toyota does with their holes, wouldn't that be fine?

For anyone searching, I ground the poop out of a junked drill bit until it fit pretty well into the stock steering arm, to drill tapered holes for the cone washers

Thanks,
Tyler

 

Understanding what the cone washers do would make you realize why they are necessary due to stress loading and the transfer of this loading. There are lengthy threads on Pirate and Marlin forums concerning this subject.

 

x2

As Wabbit basically said, the cone washers are a critical part to the steering arm assembly.