Originally Posted by
70sSanO
I've used quill to threadless stem adapters, but not setup as hidden, on a couple of bikes. The adapter/extender was aluminum, but the wedge and the bolt were steel.
They function the same as an aluminum quill stem but with a upper section that will accept a threadless stem. I can't imagine anyone selling an adapter/extender where all the components were aluminum.
John
I hope the 7075 will make the difference.
7075 is notable for its high strength-to-weight ratio and improved strength over 6061. Because of this, 7075 is largely used in aerospace, marine and transportation industries. Any industry where high strength and light weight properties are critical, this alloy is preferred. High-end bicycle components, molds for the plastics and tool industries, airframes, and even military-grade rifle receivers all heavily utilize 7075.
