My first post. I'm bumping this thread just to say thanks, because you may have solved a long-standing mystery for me: namely, who built the frame I've been riding for the past 28 years.
My serial number is the same format as yours, Omegastrada. It starts with a 'K', and ends with an 'R'. Five numbers in between. I'm assuming you've interpreted your number as meaning: 'The third frame built in 1980'. By the same system, I seem to have the thirteenth frame built in 1975, and from what I've heard, Stan wasn't building under his own name until about 1975, so possibly in one sense I've got the thirteenth 'Stan Pike', but thats O.K., I'm not superstitious about that! The question is, what do the 'K' and 'R' mean? Any ideas?
My frame is more 'road' than 'time-trial', I guess. Possibly a 'stock' frame built for nobody in particular. Probably 73deg. parallel, 23inch seat tube, 22.5 top tube, 16.25 stays, close-clearance... the sort of clearance that would put your brake blocks exactly half-way up the slot in the stirrup on the 'short reach' brakes of the day, about the same as yours. I cannot see from your photos, but suspect that the tops of your seatstays like mine come together as points over the top of the seat lug, not quite touching eachother, yes?
Mine has the long Campag. rear dropouts, 120mm between 'em, built for a 5-speed block. Originally a 65mm bracket shell, the threads were already fairly 'fatigued' when I bought this (at the time) nine-year-old frame out of the classifieds in 'Cycling' in 1984. Installing, neglecting, and, a few years later, uninstalling an alloy-cupped Stronglight bottom-bracket didn't help, and I eventually had to get the bracket shell replaced (twice, as it happens, once by someone who didn't care, and once by someone who did) when this frame was around 25 years old. For that reason I no longer have the serial number there, but the one on the steerer tube remains.
The only braze-ons are a pair of bottle-cage bosses on the downtube and a cable-stop for the rear derailleur underneath the right chainstay. The rear brake mounting hole is noticeably off-centre. whether by accident or design I don't know. It takes a track headset....came to me with a Super Record one and I'm still using it.
I will perhaps get some pics up of mine in the raw metal if anyone is interested...it needs some new paint. I'm pretty sure the original paint was gone before I got it.