With the Roaduno duly racked and running nicely, the wise thing would be to continue to ride it as is and get to know it whilst plotting my next move:Alas, I am not wise, and this morning I decided I was going to go ahead and unlock that inner chainring:You know that scene in Taxi Driver with the gun salesman? Thats how I feel when Im digging out spare parts for a project:[Lookit that, thats a beautiful little derailleur.]According to Rivendell, the stock freewheel is good for single speeds but doesnt work well with chain tensioners, so I figured Id swap it for this one which uses a Shimano bottom bracket tool to install:I also had what I figured would be a perfect front derailleur:And between The Classic Cycle 21st Century Friction Shifter Shootout and a box of treats Id received from Rivendell I had about a thousand rear derailleurs to choose from, which I eventually narrowed down to these:For a shifter I figured Id use a Silver2:And of course Id need other odds and ends, such as a new chain and a cable guide for the underside of the bottom bracket shell:Also in my box of treats was a 44-tooth chainring, so I figured while I was at it I might as well not only unlock the little ring but shoot for the moon and go for a 31 with an overdrive gear:After installing the chainring, I removed the little nipple pastie from the shifter boss:Then I mounted the Silver2 in the downtube shifter position, since I figured that way when I start swapping cockpits I wouldnt have to relocate it:Installing the front derailleur, I realized that since the middle and large chainring were so close in size it would have to sit pretty high up to clear that middle ring:So I changed my mind and reverted to the original setup:For the tensioner I decided to use the Ultegra, since capacity wasnt going to be a concern and it seemed like the tidiest option:Excitedly I headed out for a test ride:Guess what? It skipped. So I tried another rear derailleur:That skipped too. So did this one:Could it be the freewheel? I dug out another one, a Shimano. It skipped. I shortened the chain, figuring maybe I wasnt getting enough tension out of the derailleur. I played with limit screws and the B screw on the Ultegra. Ultimately I got the best results with the Ultegra derailleur coupled with the chain cut as short as I dared, and it worked perfectly on the big ringbut in the little ring it still skipped. Heres how it looks in that position:That seems like it should work to me but perhaps Im missing something obvious. Whatevers going on it has to be something Im overlooking, or setting up wrong, or the derailleurs bent or something, or somehow both my freewheels are worn (though they sure dont look it), because Rivendell have been riding them this way for awhile now with no problems, as have plenty of other people:No, its definitely me. Im sure Ill figure it out, but in the meantime feel free to tell me what Im doing wrong.