Bike Forums - View Single Post - Can a frame-builder replace a 1 inch threadless steerer with a threaded steerer?

11-19-13 | 07:57 PM

#25

Scooper

Decrepit Member

Joined: Aug 2005

Posts: 10,488

Likes: 92

From: Santa Rosa, California

Bikes: Waterford 953 RS-22, several Paramounts

Quote:

Originally Posted by IthaDan

Code:

25.4 - (1.5 + 1.5) = 22.4.
OD - (wall + wall) = ID

22.4!

I'd imagine a quill stem could make up .2 of a mm handily. For those thinking in inches, this is less than .008. FWIW, the tolerance for copper plumbing fittings is .005", so it'd be a little loose of a fit, but completely possible to make work.

Uh, I know that.

What I'm suggesting is that if the threadless steerer has 1.0mm walls (as many threadless steerers do) instead of 1.5mm walls, 25.4 - (1.0 + 1.0) = 23.4mm. A 22.2mm quill stem would have to expand 1.2mm and that may be too much space for it to cinch the walls securely.

__________________
- Stan

my bikes

Science doesn't care what you believe.

Reply

0