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Well.. this is interesting.. just been to the Stan Pike website and seen the ex John Woodburn K77069R over there, complete with a photo of the serial number on the bracket shell, a ringer for what mine used to look like, before the shell was replaced. A few years back I was futilely exploring...

What would we do without dads and their tobacco tins eh? This one is 1/4" BSF too..🙂

You could also try PMing bduc61 on here, our (erstwhile?) resident Frenchman- dunno if he's still around.. he has some great threads on French stuff, back in the archives too..🙂

I'll be honest- almost anything I know about Bertins comes from Jim's site- and with the proviso that I don't know whether the features that suggest to me that this is a Bertin are unique to Bertin, or were widespread among French builders.. here is the evidence: 1)Bertins are documented as...

You probably need to abandon hope of 'definitive'. Just over three years ago I identified this to you on here as likely being a Bertin cyclocross...probably early '70s. I probably should have done so without the sarcasm... (story of my life.) The people who could give you a definitive answer...

I disagree. 80s Holdsworth Special is just like this, (lugs apart) using the same fork crown and bb shell. I don't think those 'pantographed' top-eyes were in evidence on British frames before the '80s, or at least the late '70s?

I don't know how much lighter SL was than DB, but fwiw I have a 23" c-t 531db frame which weighs 2075g, the forks weigh 750g- more or less 6lb all in, in old money.

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You should probably remove the 'h' from 'Whitcomb' in the text on your homepage though, curyam. Whitcomb was a contemporaneous Liverpool framebuilder with no business connection (afaik) to Witcomb in Deptford Sarf London..

Sorry I don't remember a board called "Red" anything! I was fortunate(?) enough to be able to get myself to Alpine Sports at the time.. could barely afford anything in there though.. turned out I was crap at skateboarding anyway..🙂

Try searching for "flyer" skateboard.

It's a bit academic these days. From memory, apart from uphill, It's where I psych myself up to stretch to the hoods, deluding myself that I'm going fast enough that I might need to apply the brakes..🙂

We seem to be at communicational loggerheads. I say 'tops'.. you say 'yes just to the hoods'. That's about 5cm different... and the not-so-subtle sub-text of my post was that bike fit hasn't come any way at all in forty+ years. Why would it?.🙂

Yeah but road bikes with drop bars have three distinct hand positions- tops, hoods and drops. Which are you measuring to? Fwiw both my bikes (mtb 30+ years old & road bike 40+ years old) measure up pretty close to this 'rad' thing. (if road bike is measured to tops.)

There's a thread currently on page 8 of 'Retro Classic Road' sub-forum here. If you post your frame number there dwscrimshaw might give you his opinion as to which year your frame was built. There will be date-codes on components as well, assuming they are original equipment? A nice frame, which...

'Twas the most cheerful blue known to man..🙂

No.

In the 1970s/80s the rough 'n' ready formula was: Seat tube (c-t) = inside leg minus 11 inches.