Hey. I am physicist and rider. Always i thought angular momentum can't be enough for stability. It's very minor force for that mass.

Unfortunately i never made search as you made.

I am reading the artcile ("A bicycle can be self-stable without gyroscopic or caster effects") now.

I don't like people when they are sure of everything. Many physicsts sure that they know how bike works :))

This is great post. Thank you.