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?) :
Amazon.com : Origin8 Quill Adapter, 22.2/28.6, Black : Bike Stems And Parts : Sports & Outdoors
Nitto quill adapter for clamp-on stems – Rivendell Bicycle Works
How To Convert Quill Stem To Threadless Stem With Adapter On Vintage Bike - YouTube
Nitto Quill to Threadless Stem Adapter
New Innicycle 1" Threaded to 1-1/8" Threadless Conversion Headset - BIKEPACKING.com
Deda Spada Quill Stem Adaptor | ProBikeKit.com
File:Threadless stem with quill adapter.jpg - Wikimedia Commons
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.