steering tube size

[gazza19]

hi can anyone tell me what size steering tube this bike will be thanks

 

[Andy in Germany]

Do you own/could you borrow a pair of calipers from someone?

 

[Yellow Saddle]

1 inch.

My understanding is that 1 1/8 inch steerers are all threadless. Am I wrong, vintage gurus?

 

[raleighnut]

1 inch.

My understanding is that 1 1/8 inch steerers are all threadless. Am I wrong, vintage gurus?

Given that you can buy 1 1/8 threaded headsets I'd say there must be forks that use them.

 

[I like Skol]

There's only one way to be sure, measure it. It could be anything, I had an MTB in the early 90s which had an oversize 1 1/4" threaded headset. Not common but they are out there.

 

[Beebo]

Do you own/could you borrow a pair of calipers from someone?

Or a large adjustable spanner. Then just measure the gap.

 

[Smokin Joe]

Going by the head tube that's an inch, but it takes a few seconds to measure it.

 

[Yellow Saddle]

Going by the head tube that's an inch, but it takes a few seconds to measure it.

A bit more than a few seconds. It doesn't look like there's exposed steerer there. He will have to measure the stem OD and then work from there.

 

[fossyant]

1 inch.

My understanding is that 1 1/8 inch steerers are all threadless. Am I wrong, vintage gurus?

You are - my DB is threaded 1 1/8.

Not often you are wrong there YS - LOOSER !!!

 

[DCBassman]

You are - my DB is threaded 1 1/8.

Not often you are wrong there YS - LOSER !!!

FTFY

 

[fossyant]

FTFY

Whoops

 

[fossyant]

Nah it's said 'LOOOOOOOOSEEEERRRRRR'

 

[DCBassman]

Nah it's said 'LOOOOOOOOSEEEERRRRRR'

Ah, well, that's quite different, don't you know?

 

[rogerzilla]

1 inch.

My understanding is that 1 1/8 inch steerers are all threadless. Am I wrong, vintage gurus?

Kona MTBs used 1 1/8" threaded steerers for years (at least 1991-94), claiming quill stems were where it was at. Brompton still use them. The Kona ones have quite a low stack height but a Tange Falcon, or whatever the 1 1/8" equivalent of the Falcon is, is a good replacement.

1 1/8" was originally Tioga "Avenger" size, in the same way that 1 1/4" was Fisher "Evolution" and threadless was Dia-Compe "Aheadset" (Cane Creek now own that particular trademark).

 

[I like Skol]

I had a 1990s kona recently and the threaded headset was a thing of beauty! The locknut had a clamp bolt built in which totally removed the one weakness of a threaded headset in an mtb application, namely coming undone due to the continual impacts of riding off-road.