Originally Posted by
Kontact
I would say you were optimistic and cavalier with your safety. Steerer threads are normally reinforced on the outside by the locked portions of the upper headset and the quill inserted into them. You have managed to take a steerer - which is essentially full of spiral cut, sharp bottomed stress risers, create two compression edges on them at the top of the HS and bottom of the stem, removed any internal reinforcement a quill brings, and then put extra forces on the part being pinched by the stem.
People always seem pretty pleased to report the super dangerous mechanical things they've done, but maybe you should hide this sort of bad decision and just thank God it didn't end badly.
Well it hasn't ended yet, badly or otherwise. Your concerns are valid, and I certainly would not have built it this way for a customer, and I probably should not have encouraged the OP.
Now that the parts shortages have corrected somewhat, the plan is to cut the steer tube and insert a quill adapter. My preference would have been to go threadless from the start, but those parts were simply not available from my sources.
