Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take part in the November Giveaway for Haven Bay beach cruiser and Kazam Link kids trailer valued at $525 💙


7" steerer tube into 5" head tube.
#1
Hi to all.

Here's another project I'm tinkering with. I have an older (26" MTB) frame (bare) and springer fork just waiting to be used again (both are 1"). The head tube on the frame is 5" (or a bit more) and the fork steerer tube is 7"+. The threads on the steerer tube don't go far enough for the remaining parts (bearing nut etc.). I've considered the following to remedy the problem:

1. Take the forks to a machine shop and have more threads added.

2. Find an "extension" head set that can reach both the available threads and the bearings.

Any ideas or suggestions is appreciated. There is some metallurgy involved with forks and metals heat up when threaded so I'm unsure if the forks will become brittle after threads are added.

Thanks....................Tom
2011softcruise


“Striker, listen, and you listen close: flying a plane is no different than riding a bicycle, just a lot harder to put baseball cards in the spokes.”
Airplane (1980) – Rex Kramer (Robert Stack)

  Reply
#2
any decent old style LBS should have a fork thread cutting die, shouldn't cost much and no heat will be involved.
You could also consider converting to a threadless A-Head style set up? again a LBS would advise if you are prepared to buy the parts from them.
  Reply
#3
My suggestion was going be go to a threadless headset that way you can cut down the steerer tube to fit the head tube, but trevgbb beat me to it.
HCFR Cycling Team
Ride Safe...Ride Hard...Ride Daily
  Reply
#4
I don't think you are supposed to use a threadless ("A-head style") headset on a fork designed for threaded that just doesn't have the threads cut. Especially if the threadless stem would clamp anywhere that there is threads. Recipe for catastrophic failure.

Any decent bike shop can cut extra threads and cut the length down to the right size. Totally standard practice.
  Reply


Possibly Related Threads...

Forum Jump:

[-]
10 Latest Posts
warm bike Vacation destination
Today 01:52 PM
Help identifying vintage frame
Today 03:56 AM
Is it cold where you are now?
Today 02:22 AM
Rigging Cheap Single Speed Conversion Ki...
Yesterday 05:59 PM
What did you do with your bike today???
Yesterday 08:12 AM
Help with cassette type
11-28-2022 12:30 PM
Patching a tire
11-28-2022 12:08 PM
The bike industry has a big problem comi...
11-28-2022 12:06 PM
Where do you put your phone when riding?
11-28-2022 08:33 AM
2011 GT Tachyon upgrade/mod
11-27-2022 11:41 PM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. ReapThaWhirlwind
24 posts
no avatar 2. IgorCvetkovski
13 posts
no avatar 3. ichitan
13 posts
no avatar 4. Painkiller
13 posts
no avatar 5. Talha
11 posts