I want to keep the fork and headset original on my R20 but change handlebars. Can I drop a 22.2mm (7/8") quill riser such as either the Soma Quill riser or Nitto Technomic long stem into my R20 and just use the existing clamp without the quill to tighten, or am I missing something? Thanks.
Inside the standard R20 stem there is an arrow-shaped slot ground into the stem as well as a strange wire contraption that somehow helps to keep it all together when you tighten the quick-release clamp. (It's a while since I dismantled mine )
You can definitely fit any 1" quill type stem in the headset but I don't think you can also take advantage of the clamp and turn the bars 90° on the fly when you want a quick fold. I may be mistaken but I'm pretty sure the bespoke nature of the Raleigh stem is entirely to do with this 90° swivel fold and don't think normal quills will work the same way.
Yes, that makes sense. I put a quill riser in my R20 and just used the clamp instead of the tightening the wedge. I worried, however, that cranking on the QR clamp might not be good for the riser, since it was designed to work with the wedge. It may be fine, but I'm back to using the wedge.