I made a ton of bike ruffs an after many revisions here is the design I settled on. The basic shape revolves around a straight turbine engine with everything else (including the pilot) added on around that. The hardest part about making this was trying to make it look like a early 1900's piece of machinery and not too sci-fi.
The drawing is still ruff but I think there is enough information to get the idea of what everything is. This was more a study to figure out what the bike would look like so that I could use it in other drawings.
