1. The shifter is intended for straight bars and not suitable for drop bars. I've heard of a couple of home made adapters to allow the use of drop bars but they were somewhat jury-rigged and required a fair bit of do-it-yourself construction.
2. The Rohloff hub requires horizontal dropouts to properly tension the chain, rather like a fixed gear or single speed setup. If you get very lucky with your chainring/cog/chainstay length combination vertical dropouts can work but you can't be sure until you try it. Rohloff does offer a chain tension device (sort of a stripped down rear derailleur) to allow vertical dropout use but that defeats some of the simplicity of the installation.
BTW, I just looked up the "Schlumpf speed drive" on Sheldon Brown's web site. My first thought was that it was one of his annual April 1 articles but apparently it's real. What is also is is EXPENSIVE! One of these plus the Rholoff hub totals over $1300.
The cost of a couple of chainrings and a derailleur or even a new crank is negligable in comparison.
This message was edited by DaveB on 3-26-04 @ 2:46 PM