Getting a new head set for my seventies bike any idea of size

It's a typical 70s racer so I'm guess 1 1/8?

make?? model??

I'd have thought 1" threaded. Why don't you measure it to find out?

I'd have thought £1 to start a thread. Why don't you cough up?

;-l

^zing!

and it's probably ISO 1" threaded.

on this note, when did 1.125" headsets start appearing?

It a claude butler Olympic

It a 1" in it.

Get a tange. Classic looking but not silly cash.

yea 1 inch threaded if ur using the existing forks. Be careful with 'stack height' (the total height of the headset, if the new one is taller than the old one it may not fit the forks. Yea tange ones good or maybe the miche one is pretty good value and trad. looking

Luverly luverly stronglight...

Period would the old tapered version, sadly they newer one have cartridge (balls) bearings. Not quite as sexy, to me anyways....
Scherrit.

It a 1" in it.

Get a tange. Classic looking but not silly cash.

you cheap barstard.

was it raleigh that used to make some mental sized heaset which was wider than a 1" and smaller than a 1 1/8th?

Raleigh had some funny sizes but a 1" headset will fit in if you change the forks and stem as the tube diameter is the same. Same with French size although an english stem will fit in a french fork with a 1" threaded headset. A french stem will struggle to fit in an english threaded fork but might just get into an english headset on a french threaded fork.... The confusional joy of old raleighs and french bikes....