Hi all, I'm working on my first fixed gear conversion and running into some snags. I'm building on an old Motobecane Nomade II frame that I nabbed on Craigslist. It's a really nice frame but I'm considering going for something else just due to the inconveniences I'm running into with it.

The old crankset on there has (I believe) a 52t outer ring and no inner ring, and I don't want to run 52x16 on this bike (I'm running 16 on the rear) so I feel like I'd have to either find an inner chainring to bolt on or a whole new crankset. It seems like both of these would be kind of a pain as the BCD for an inner ring on this set would be 122 (I've been hearing that this is somewhat rare) and the funky threading on Motobecanes would make a new crankset equally aggravating.

I love the frame but I feel like it's turning into a money pit and I'm wondering if I should just put the frame up for sale and find something that won't be such a hassle. On top of all this, the frame is a little large and I think I might like to ride something smaller. Any guidance and advice you guys can give would be a great help. Thanks.