Bicycle TutorBicycle Tutor

Show off your bike!

Related video tutorials:
Determining headset, head tube and steerer diameter measurements
I've acquired a very large and possibly non standard old steel frame I'm going to use to build up an expedition bike. This will be my first bicycle build so I'll be learning along the way.

I'm hoping to build it from bits around the place, on the cheap, wherever possible (mates dead bikes, local 2nd hand bike shop parts pile etc) Due to the size of the head tube (213 mm length) I can't just throw on any fork so it looks like I'll be ordering one off the internet.

There are a few cheap forks with 250mm+ steerers around that are 1 1/8. My question is, using the internal head tube diameter (30mm) how can I determine what the diameter of the steerer should be? And consequently the headset?

I'm pretty new to this game and I appreciate any help I can get on this.


Jack, see if is the info that you're looking for. I bet it is!
By the way, browse that site for hours. Tons of info there!

Wheelies don't pop themselves. (from a QBP fortune cookie)
You can use that inside diameter from the headtube and find a headset that fits. Threaded Headset:Make sure the new headset thread matches the new fork thread. Threadless: make sure the diameter of the headset and fork diameter are properly sized. Determine your fork length and headset stack height. Cut the fork if needed. Set the crown race on the fork. Careful not to damage the race. Threadless: set a star nut in the fork column. A little bit of math to do this but measure twice, cut once. Check out for another resource
Quote:Threadless: set a star nut in the fork column. A little bit of math to do this but measure twice, cut once. Check out for another resource

Or whack a Headlock, Hope Head Doctor, or similar in there. It's easier than a star nut and can be removed fairly easily as well. Downside is it's a bit more expensive. The Hope is a better one, but I have no idea if you can get Hope out in Australia

Possibly Related Threads...
Thread Author Replies Views Last Post
  Head Stem Replacement mtcayman2700 0 2,313 06-17-2017, 08:39 PM
Last Post: mtcayman2700
  42mm Inside Diameter Head Tube surveyorcam 2 4,759 07-23-2014, 04:18 AM
Last Post: surveyorcam
  Headset bolt spinning in threadless headset screwed up again 9 12,441 05-19-2013, 10:28 PM
Last Post: painkiller
  Integrated Headset vs. Internal Headset Bill 1 7,642 09-27-2012, 02:27 PM
Last Post: xerxes
  Possible to fit fork with 1" steerer to 1 1/8" head tube? tsoule 3 12,988 03-31-2012, 02:48 PM
Last Post: zerogravity
  Headset, Tube, Wedge Question gadufan 1 6,839 11-21-2008, 02:33 AM
Last Post: Alex Ramon

Forum Jump:

ISSN 1918-3445 © Copyright 2007-2010 Bicycle Tutor / Privacy Policy / Created by Alex Ramon