I got the bike in original condition from Frank the Welder some time back. Here is how I have it now:
- 35mm tires
- TA crank with 42 chainring and 155mm (yes, really) arms
- S3X 3-speed fixed gear hub, 16T cog
- mustache handlebars
- original front brake with Mafac lever
Gears are too low. I'll replace the cog with a 13t or the chainring with a 52t. But it's interesting how I can stop the bike by shifting down and then resist pedaling. It's easier than with a true fixed gear bike, since the ratio is so low.
Still have to make changes to make it more comfortable. I might ditch the handlebars. I still haven't learned to appreciate mustache handlebars.
The tires fit too tightly. I'll probably swap 32mm tires on.