Originally Posted by
darukhan
I'm not sure if Rolf makes 20" rims? (Anyone know?) I do know that Velocity makes 20" V rims and Aerospoke also makes streamlined (although heavy) 20" wheels.
I know Bike Friday sells 20" Rolf Prima wheels from time to time. From memory, I think that Rolf is another Oregon company such that Bike Friday gets special wheels from time to time. But it's not my style.
Originally Posted by
born2pdl
I could research these bikes all day, lots of interesting stuff, thanks for the ideas. A bit more detail on my ideal target would be: fast/rolf type wheelset; drop bars or maybe bulhorns; double chainring, mega-exo bb, 10 or 9 speed cassette, sram force or ultegra level.
There are a couple of nice bike fridays on craigslist. Amazon has some (2010?) hammerheads with the fast wheels for $1370 but only size medium, specs say those above 5'6" need size L (I'm 5'11").
Stupid question time: Would it hurt these bikes to bunny-hop the 2 or 3 obstacles that I hop over daily? (my roadbike = c-dale six-13 with rolf vigors)
If you're going with a "fast" bike with index shifting, then you should stick with a Capreo type hub/cassette. The default is 9 speeds but there are (expensive) 10-speed options out there.
Whether you can get away with bunny hops probably depends on the wheelset and the headset. If you're going with fancy wheels, then you'll have a better idea what they can handle. Although I will mention that for a given spoke count, 20" wheels are much stronger. Mine have withstood some extraordinary events -- a pedal strike that sent me up and to the side including a sideways skid -- that were fixed with a quick truing.
I'd be worried about the headset over a long period of time. The stem post is a giant lever and one would think that it would put a lot of stress on the headset. However, Bike Friday and Airnimal make MTB specific folding bikes. So I suspect that whether a folding bike can take repeated bunny hops depends on the make and build.