Had to fit this adapter where was the quill stem. Tried putting spacers but because it is narrower at the base they kept moving. Is that dangerous? (other than being dangerously ugly?) :
Velo Orange Threadless Stem Adaptor
B&L Bicycles French bicycle stem quill adapter for 22.0 , threadless - B & L Bicycles near Paradise Creek on the Palouse in Pullman. We love riding the Rolling Hills of the Palouse.
File:Threadless stem with quill adapter.jpg - Wikimedia Commons
Threadless Quill Stem Adapter – KINEKT Store
Help, my headset stack is a mess. Works ok, but looks terrible. Appreciate any advice! : r/bikewrench
EVO, Threadless stem quill adaptor, Fits 28.6mm (1-1/8") stem to a 22.2mm (1") steer tube - Walmart.com