Hi Guys,
Thanks for all your inputs. I will not try to answer specific points with references and quotes (as that would probably overstretch my computer skills).
It’s looking like the late 60s and it looks very much like Shaun’s Cobra, even down to the 5-gear bike with provision for 10-gears (brazed front-changer cable stop). The age seems to be confirmed by Spokesmann’s frame number information? As the list shows T for 1966 and Y for 1967, I assume that the prefixes U,V,W and/or X would have been used in between. The inconsistency seems to be that my number is on the bottom bracket, rather than on the rear drop-out. I am a little confused by the presence of two numbers – the 7-digit one as well as the 4-digit one with the letter prefix – but a little remaining mystery is not a problem. I could not see any other numbers on the drop-outs or seat tubes – but I will take another closer look.
The general consensus for the restoration seems to be a clean-up-and-go. That is pretty close to my view. I will probably aim for a generally silver-chrome bike (as now), but I quite fancy highlighting the lugs with red or blue lining, along with twill tape and maybe outer cables of the same colour. I will try to re-use most of the components; when I change some, I will aim for them to be “in keeping” with the bike’s age, rather than aiming to match the original.
I am keen to increase to 10 gears – the cable-stop is already there on the down-tube. There seem to be a number of suitable front-changers coming up on
Ebay and I am tempted to change the rear derailleur too. The obvious choice would be Huret, but I am also considering Simplex (for personal nostalgic reasons). The existing chainwheel will not take a second ring so I will need to change the complete chainset. I have a fairly open mind between cottered steel and cotterless alloy, so I’ll just keep my eyes open for either.
As my most active cycling days were in my mid-teens in the 1960s, I am very comfortable with bikes of that era and a few years earlier. The braking qualities of wet steel rims are not an issue for me (and may be a less of a problem than the instant stop of my hybrid’s disc brakes). The wheels seem fairly true, so I will would like to re-use them if possible – but I must admit I could easily be tempted by alloys.
The other suggested change is the saddle. Yes, I will go for leather – mainly for my comfort.
So, the main thing will be the clean-up. Can anyone offer suggestions for the chrome frame? I would have assumed T-cut and/or metal polish as a start, followed by a coat or two of clear lacquer. In other threads, I have seen references to using WD40 and to Aluminium foil. Can anyone shed light on these techniques?
Once again, thanks to all of you for your comments.