Originally Posted by
sciencemonster
If you shorten the head tube and use a fork with a shorter steerer tube and a regular headset, how critical is the cut? Is that a machine shop job, or could I do a careful but not perfect hacksaw cut?
I used a hacksaw and a flat file, with a machinist's square to tell where to file to get it square and flat. It does make it impossible to fit an original R20 fork, but for me it was no great loss. I added a stem extender and a standard quill stem to get the handlebar rise. It's no longer quick-release, but I suppose I could tape a 6mm allen wrench to the handlebars and make it quick-ish release.