question about forks and headtube sizing

[bkaldorf]

So I got ahold of my first vintage frame and fork (1952 schwinn dx) and I really want to build something out of it, thinking maybe a 24/20 wheel with a springer front end. the headtube is a 1.25" and all the springer forks I'm seeing or for 1" headtubes. Do they even make these or is there some kind of conversion kit I can get? This is my first build so everything is new to me!
Thanks guys and gals!

Edit: when I measure the outside diameter of the existing fork at the threads, it measures 1". Does that mean i really need is a 1" steerer tube fork then?

 

[Captain Awesome]

So I got ahold of my first vintage frame and fork (1952 schwinn dx) and I really want to build something out of it, thinking maybe a 24/20 wheel with a springer front end. the headtube is a 1.25" and all the springer forks I'm seeing or for 1" headtubes. Do they even make these or is there some kind of conversion kit I can get? This is my first build so everything is new to me!
Thanks guys and gals!

Edit: when I measure the outside diameter of the existing fork at the threads, it measures 1". Does that mean i really need is a 1" steerer tube fork then?
View attachment 199888

That is a 1" head tube

 

[bkaldorf]

awesome, thats great news. just for my own education- how can you tell? I measured the inside diameter of the headtube and it came out to 1.25" (totally could have read the calipers wrong). Do you generally determine it by the diameter of the fork steerer tube?

 

[ifitsfreeitsforme]

bikes of that era used 1" forks.

 

[Captain Awesome]

awesome, thats great news. just for my own education- how can you tell? I measured the inside diameter of the headtube and it came out to 1.25" (totally could have read the calipers wrong). Do you generally determine it by the diameter of the fork steerer tube?

https://www.sheldonbrown.com/cribsheet-headsets.html

 

[bkaldorf]

thanks!!!!