here is my freewheel duo-speed hack:
it does work as planned, with 18t at the front of the dropout and 16t closer to the rear of the dropout. gear change is as simple as undoing a quickrelease and making sure ur fingers don't fall into the grinder.
only problem is.. these cogs are not really designed for being hammered on WITHOUT a derailleur. if you do, and the chain isn't too tight, you get a POP POP POP, GRIIIIIINNND, and then ur onto another cog, OR u are on no cog... either option makes for face meeting stem a very real possibility.
sooooo..unless i want to run a derailleur, which, i don't really want to do, this budget beater is on hold, with its crazy slammed fender clearance and all.
one thing i found is that the wheel WOULD move forward, even with it locked into the drop out with the quick release getting a taste of my 24" pythons. After some inspecting, i found that the axle on the freewheel side is bent. Apparently this is common and... unfortunately, a fact of all freewheel hubs..
or is it?
I am pretty sure if i could get an axle that would stay straight, and locked into position with even chain tension, this would be be a non-issue.
OR run bmx cogs.. but bmx cogs don't fit on freewheels.... ugh.