I built my Surly ECR up with a mixture of parts I definitely wanted, and whatever second hand parts I could find to fill in the gaps (to get some quality outside my price range). I built the wheels myself, with new parts except for the second-hand Rohloff Speedhub. Otherwise, used parts dominate among the static parts such as the seatpost, stem, and handlebar. But, no part was chosen haphazardly (perhaps with the exception of the brake levers, which had occupied my parts bin for several years). The setback of the seatpost and sweep of the handlebar are as important as the shiny wheels to making me comfortable and happy on this bike.
So here are the details of the build list. Some bits are on order, and not actually physically present on the bike yet.
Frame: Surly ECR size L (20″)
Fork: Surly ECR
Seatpost clamp: Surly stainless
Crankset: Shimano XTR M970 172.5mm
Bottom Bracket: Race Face X-Type DH
Chainring: Blackspire 34t (will be switched for Surly Stainless, 34t)
Cog: Rohloff 16t
Headset: Cane Creek 40
Brakes: Avid BB7
Brake Levers: Sram SL 9.0 (polymer, these came from the old parts bin and were meant to be temporary. But now I like them.)
Shifters: Rohloff twist
Stem: Thomson X2 100mm
Handlebar: FSA Gravity 777 flat bar (10 degree sweep, flat bar. 777m wide currently, to be shortened a tiny bit for touring)
Saddle: Specialized BG Avatar 143mm – worn out (Selle Anatomica Titanico X on order)
Grips: ODI Rogue lock-ons. These will probably get traded for some Ergons with bar ends.
Front Hub: Velocity ATB Lightweight 9mm (This is actually a rebranded Novatec hub, which is a good thing. The Taiwanese are the 21st century experts of all things bikes.)
Rear Hub: Rohloff Speedhub Disc (14 speed internal gear hub)
Rims: Velocity Dually 29″ (45mm wide)
Spokes: Sapim 14g (I usually prefer butted spokes, but I got talked out of it this time), brass nipples.
Tires: Surly Knard 27tpi, 29×3″
Rim Tape: Gorilla tape, cut to width, two layers for a better seal.
Tubes: None. Stans sealant instead.
More pictures will have to be added later, as I’m away from the bike for a while.