As a fall/winter project, I'm going to be upgrading my new-to-me-this-year-but-probably-from-about-1990 Bianchi Sport SX to semi-modern standards, mainly because freewheels are getting hard to come by and close-ratio freewheels are no longer made. It's currently set up with stock Shimano 105 components (13-24 freewheel, 50/42 Biopace crankset) and very spiffy looking 36/32h Araya rims. I bought it used, but I reckon the bike has about 2000 km on it. I have upgraded the shifters to Rivendell Silver bar ends, but I still have the stock 105 downtubes.
I will be buying a new 36h 105 rear hub, and having a wheel built.
-is there any reason not to re-use the spiffy-looking rim?
-should I select the spoke gauge based on what was used originally?
-with kilometrage that low, could I save money by re-using the spokes (?!? - I know this isn't supposed to be done...)?
-are new 105 hubs still the same old Shimano cup-and-cone loose-bearing type (which I think are lovely)?
Also, I suspect having more gears will make me want indexing, even though the Silvers work just fine for now. I am planning on buying a Dura Ace 9sp downtube shifter set and mounting them on the Rivendell bar end pods using the flat lever boss covers for the 9sp Dura Ace bar ends (which I got online from a store in the UK). (I would prefer not to use DA bar end shifters -- I prefer the look and feel of straight, shiny shifters.)
-are all Shimano lever boss covers the same, other than being curved differently?
-are there any other possible problems with Shimano DT shifters as bar ends?
-does anyone sell flat lever boss covers for narrow steel-tubed frames which I could use to mount my Silver Shifters on another bike?
This was rather a lot of questions. Thanks for your help, Mechanics Forum People!
(and, if anyone wants my 6sp 105 shifters or hub, I'm happy to let them go)