While riding with recreationists in Critical Mass in 2003, I often wished I could make a pennyfarthing. The problem is just where to get a large, fixed wheel- otherwise the bike is very simple to construct. I researched making your own unicycle wheel, figuring I'd just make it larger. I found lots of tales of horror about trying to drill through axles.
Then I saw a picture from Marin County of an odd reverse chopper. The maker had tilted a frame upwards, reversed the bottom bracket, and mounted a seat on the extended fork! The result looked like a chopper that rode backwards. This gave me the idea that I could cheat and skip the big wheel if I just flipped a frame upwards. This was the result:

The bike was deadly. A small bump or slight grade and you'd crash forward, catching your legs on the handlebars. The terror of riding it set me on the path of developing a pleasant, retrofuturistic faux ordinary.
Labels: DIY, origins, pennyfakethings