Houdy! i have a 24". going around town sucks with the trials ratio, but having a dérailleur also sucks. i am still waiting for some company to make a 2-geard hub / freewheel made for abuse! i know about the Hammerschmidt, but the price tag is ludicrous. you could also use a tensioner that can be (sort of) easily moved from one cog to another, but this brutally separates the trials part of the ride from the commuting part, which takes away from the whole idea of a street-trials bike. anyway, i think you all know what i am talking about, i was just wondering if some new product came along or anybody came up with a brilliant idea for this purpose, that we all missed.