Railroad bicycle

[machiasmort]

Think pavement hurts? Try those sharp rocks!!!

Can you say DERAIL? Ouch! I'll take my risks with the chink chain tensioners!

If you could make something liteweight to skirt both sides of the track, that would be one thing.

 

[SimpleSimon]

Marty, gravel is gravel is gravel. Railroad bed, highway shoulder, back road - it's all pretty much the same stuff. That said, the guide rail wheel I envisage uses a 4 inch wide 8 inch rim diam trailer wheel from HF, with a disk flange both inboard and outboard, so the wheel is constrained to ride the rail top unless you lift it off the rail.

Since your steering is locked on the bike proper to straight ahead, it is the guide wheel and frame on the off rail that keeps you on the track.