I have recently bought a tatty old 92 stump jumper that I plan to build up as a single speed!
As I bought it as a frame only I'm not quite sure what length steerer I need for the forks.
I know the forks i need are 1" and the steerer tube of frame is 90mm!
The steerer of the original fork from my 19" '92 Stumpjumper Comp measures 125mm.
In general, you can work out the steerer length you need (for a threaded fork) by adding the head tube length to the stack height of the headset:http://www.parktool.com/blog/repair-hel ... and-sizing
Your frame will have been made for JIS cups:http://sheldonbrown.com/cribsheet-headsets.html
If you can't find a suitable JIS fork, you can have the head tube reamed and fit an ISO headset.
Calmes dans le demi-jour
Que les branches hautes font,
Pénétrons bien notre amour
De ce silence profond.