What headset do I need?

[Tootyred]

Or find a headset lock ring to use as a spacer...or as a last ditch if 38 is too tall...cut 2mm off the threads.

 

[sefton1275gt]

Thanks for all your help.

(I forgot about the cantilever brakes, so I need to also account for a hanger)?

 

[Tootyred]

I wouldn't recommend putting a hanger into a headset. It puts all the wrong forces on all the wrong threads. Either get a stem with a hanger built in, or put a hanger on the quill above the headset.

Only my opinion, but.....

 

[bikeworkshop]

It puts all the wrong forces on all the wrong threads.

Fact, not opinion.

 

[sefton1275gt]

seems I have 2 options

1 1/8
30mm crown race
38mm stack

1) 38mm stack https://www.sjscycles.co.uk/headsets/tange-seiki-falcon-fl270c-1-18-inch-threaded-headset-silver/

2) 39mm stack https://www.sjscycles.co.uk/headsets/sunlite-threaded-loose-ball-1-18-headset-black/

(would the 39mm stack be my best bet)?

appologies for all the questions (struggling to wrap my head around this one)

 

[Tootyred]

Go for the falcon its probably better quality. You might just need a spacer ( an old lock ring is perfect ).