Two weeks after my purchase, I've at last had time to give it a bit of TLC. I've bought new brake and gear cables and housings and replaced the old ones. But there are a few things that I'd like people's opinions on, as I'm not the best bicycle mechanic in the world! Now that I've got down to a bit of tinkering, I've encountered a few surprises.
1) I can't get the rear derailleur cable tight enough for my liking - first gear jumps ever so slightly and I can't tighten the cable any more. The derailleur only just stops a few mms short of the spokes, so I don't want to screw out the L limit screw any further. The barrel adjuster doesn't seem to do anything and the tightener on the down tube is only for tiny adjustments. The only way I've managed to get the cable anywhere near the right tension is by pulling the cable like b*ggery with a pair of pliars, resulting in some slight damage to the new cable. I'm wondering if it has something to do with the fact that the cable doesn't fit snugly into the barrel adjuster. I originally put a ferrule on the end of the housing that enters the barrel adjuster, but it seems to fit and work better without it. Could there be a piece missing on the barrel adjuster? You can see the situation quite well in this photo:
As you can see in the next picture, my pulling with pliars has damaged the new cable slightly:
2) My next question concerns the wheels. First there is an oddity in the wheel size. The back tyre was punctured, which gave me the opportunity to investigate this. Unless my eyes deceive me, it's 16-622. That seems tremendously thin - in fact, I don't think such a think wheel exists:
But that's not the only thing. The back wheel (the one in the photo above) has a 25mm wide tyre ...
... whereas the front tyre is 20 mm:
My guess is that the guy just shoved on whatever he had available. The back wheel in particular concerns me. 25mm seems far too wide - so I guess I'll have to replace the tyres (they look like they're made of cheese anyway). But what about the 16mm width? Perhaps it's actually 18mm, and with wear the 8 has started to look like a 6?
3) The steel frame has had quite a nasty scrape at the back. Any suggestions about protecting it from rust? I don't like the idea of respraying - the frame does look quite classy right now, and I'd hate to disfigure this old bike:
4) I've recognized the manufacturer's logo. It would appear to be Gitane, which is a classic French make, but I haven't been able to find any information on this particular model (Gitasprint) :
Note the cock-up I've made of wrapping the handlebars! I used Lizzardskins which look great in the shop, but which are a PITA to put on - I might try to re-wrap!
5) My last question is about the spokes. A couple are very slightly bent. You can see one of the damaged spokes in the picture below - look at the white packet on the left of the coffee machine and you'll see the kink. It's very small - and there's another one similar to this elsewhere on the wheel. Would it be OK to just leave it be? The wheel seems true enough.
Otherwise, I have been able to ride it for the first time today.

Very sweet indeed. You can tell it's a steel frame - a lovely, smooth ride. And the gear change is like treacle, you hardly notice it. All in all, it's been a worthwhile project - if I could only sort out that pesky first gear!