I am pleased to announce that we are now able to offer the Sturmey Archer S3X three speed fixed gear hub. It is available on any Bike Friday, but the Pocket bikes (not the tikit or the Air bikes) will require removing the chain to fold as all models will come with adjustable vertical dropouts. It is operated by a propietary bar end control, though an old style thumb shifter mount is available. Cogs get down to 12 teeth. Direct drive is the highest gear so calculate gearing from your given cogs and then 2nd will be 75% of that and 3rd is 62.5% of direct. Also possible is the installation of a freewheel on the threaded cassette body but why would you do that? :) À la carte, price is $249 for the kit and a tikit with it on would run about $1498.
Is it worth it? Heck yes. I had one before it was stolen and loved it. It seems like an oxymoron but in practice it really extends the possibilities of a fixie. You do have to hesitate, even under the slighest of loads to get it to shift and there is no brifter (like the Versa for Nexus), and there is no disc brake option, but these are minor quibbles. You can now have all the advantages of a fixed gear without sacrificing your knees. That’s a GOOD THING.
Get in touch if you want to order one up.