ranger1
TY 4 Stroke Guru
That makes sense as the spindle collar/bushing is slightly longer than the width of the spindle, therefore when the spindle bolt is tightened the bushing will not be pressed up against the spindle, it will butt up to the spindle collar. This is why I am thinking aluminum won't work for long as it might work its way past the collar then bind on the spindle.All the ones I've seen have been steel because are clamped in there to hold the collar that goes through the bushings stationary. The ski then pivots on the collar.