Originally Posted by TheRealFaux

My protype BB came in the mail today and I installed it. I've never installed a crankset before, but it was pretty straightforward. My question is about the spindle/crank arm interface. I have maybe 4-5mm of spindle showing between the crank arm and bottom bracket shell. I can't seem to push the crank arm down the spindle any further. Is this how your 75/protype bb setup looks?