Hi.

I have an old Japanese folding bike, threaded fork, 22.2mm insert.

I want to make use of my alt bar, but the stock quill stem is a single pinch bolt type so, I can't slide it in.

I'm thinking of making a quill stem and clamp a stem with removable plate.

My idea is using a 22.2mm steel seat post and cut an angle below to match the wedge.

The question is, is it safe?



Handlebar and the quick release mechanism.