(11-19-2020, 03:48 PM)JBolton Wrote: Again really appreciate the comprehensive response. I’ll definitely look into upgrading the rear derailleur to better campy model (if you have any suggestions other than the gran sport let me know!). The brakes make a bit of noise, but other than that the bike rides great. Out of curiosity, I paid $300 for the bike, would you say that’s a fair price?
If you want to stay somewhat period correct for the components then I would suggest a Campy "Nuovo Gran Sport" ($40-$60 average), "Nuovo Record" ($40-$60 average) or "Super Record" ($$60-$80 average) derailleur in good used condition. They all give better performance than the "Valentino", their main difference being in weight and gear capacity. In order to provide better shifting I am using a modern SRAM brand chain (of proper width for a 5-6 speed!); big improvement for low cost while keeping the bike looking original; using a period Sun Tour rear gear cluster/freewheel would also help a lot, but I am not out riding this bike like my regular racers so the shifting is sufficient for my needs at this time. If you are not too concerned with keeping it 100% Italian then I would go with a period Sun Tour derailleur, e.g. "V-GT" model or "Cyclone" model, both from around the mid 70's (you can go with a little earlier "V" model of steel vice aluminum construction); both of which outperformed Campy at the time at a much lower cost. Campy was essentially just "re-dressing" older designs and changing from steel to aluminum and titanium parts making their units lighter, but never really improving their function until the later 80s. Unfortunately, now those "cheaper" Sun Tour derailleurs are fetching a decent price, but you should be able to find them at a reasonable price due to the amount that were mounted as original equipment on all those Japanese bikes from the 70s.
Your brakes will be noisy due to those type of knurled rims on the braking track. If they are noisy from improper mating then you may be able to reposition them slightly; newer brake pads/holders allow for better adjustment of the pad angle, but this can also be obtained from using small shims between the pad holder and caliper arm which will affect a change in angle. I take a small lock washer (solid ring, not split) and file it at a slight angle and then add very thin shims if I need to adjust it more, usually my shims do fine ("Shim- In-A-Can", .005-.015"); you can cut up a an aluminum can and custom make some shim material for yourself. I would suggest new brake pads regardless; better surface area coverage and better designed composition for improved braking (KoolStop, etc); but alloy rims would be the biggest help in that area as well as saving a fair amount of weight.
I would be interested to know what pedals and saddle you have mounted; they might also determine its quality level/model if original to the bike.
Pricewise that bike when new probably cost somewhere in the $150-$200 range (guessing!); given its condition and somewhat obscure history I think I would value it around $150-$200 minimum; about the same as when it was new. Primarily due to the lower end component group on it and steel rims, and more than likely straight gauge/non-butted high tensile steel tubing (seat post diameter should help with that identification, 26.8mm to 27.2mm higher quality/lighter steel in general). It was essentially the "city race bike" style made in vast quantities by many companies. Your bike was probably made in lower numbers given it is from a smaller manufacturer, but I would assume it was a handmade quality frame nonetheless; just not, what was at the time, a lightweight frame made from specialty tubing; and probably not built by a master frame builder, but by an apprentice (again, that does not mean low quality!). I don't think that $300 is extreme, especially if you like the bike; probably would be the maximum price I'd pay if it was a desirable harder to find frame for me. I think the fact that it has chrome on it gives it a little more panache, and thus value. I would first try to rebuild and clean everything up and see how it rides. You may find it suites your needs perfectly as is. I would not be embarrassed riding that bike, overall good quality, and easily upgraded. I would remove the kickstand if not using as a commuter, but that's just me (lighter, faster).
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