Originally Posted by
Flatulentfox
You might want to check out
this relatively new technology. It seems to have promise as far as changing gears while riding.
I understand your sarcasm

but you need a springloaded chain tensioner to use and FD and that is not possible on a fixed gear, it'll rip it of.
Initialy I thought you gave me a link to the Schlumpf 2 speed crankset, which is an option, but expensive
Originally Posted by
Zoroman
Okay. Hear me out:
You will ONLY be in the easy-pedal-gear when you are actually climbing UP hills. The rest of the time you will be I the "standard gear".
Why not just FLIP the HUB and have one small sprocket on one side of the hub (standard gear) and one larger sprocket on the other side of the hub (easy-pedal-gear).
Yes it will take a minute to dismount and quick release hub your rea tire and flip it but why not do this?
I did it and it works great. And I have enough length in my rear wheel drops outs and they are HORIZONTAL so I do not even need a chain tensioner or 2 different chains. One chain works for BOTH sizes of rear sprockets just fine!
I know the flip-flop hub is an option, but it's a bother in group rides with people with derailleurs. Also it wears out the drouputs (especialy since it's a conversion to fixed, not a track-specific frame).
I am interested though, in what you said regarding the QR, do you use a QR on a fixed gear rear hub? How's it holding out? Have you had any issues?