Threaded Steerer Lengths
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Threaded Steerer Lengths
Postby QuangVuong » Sun Apr 07, 2013 12:15 pm
Or is my only option to not use the lock nut, and instead have a 1 1/8" quill adapter to keep the bearing top and the first nut from unscrewing? But theres another issue. I cant seem to find a stem which is for a 1 1/8" steerer and the other end for a 25.8mm bar. Or have I missed soemthing?
Otherwise, I can just search for another CF fork. Anyone have one to suit? 160mm would suit mine I reckon.
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Re: Threaded Steerer Lengths
Postby drubie » Sun Apr 07, 2013 7:35 pm
Why don't you get some more threads cut into the fork you already have and just lop off the bit you don't need? It's not difficult or expensive, most bike shops will have the gear to do it.QuangVuong wrote:I believe a 54cm Cadex frame has a 120mm steerer tube. I have found a Trek 5500 CF fork which has a 140mm steerer. Current the frame has a 600 headset, but that's a 37.5mm stack. Are there any headsets which are thin enough to fit the fork?
Or is my only option to not use the lock nut, and instead have a 1 1/8" quill adapter to keep the bearing top and the first nut from unscrewing? But theres another issue. I cant seem to find a stem which is for a 1 1/8" steerer and the other end for a 25.8mm bar. Or have I missed soemthing?
Otherwise, I can just search for another CF fork. Anyone have one to suit? 160mm would suit mine I reckon.
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Re: Threaded Steerer Lengths
Postby QuangVuong » Sun Apr 07, 2013 8:15 pm
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Re: Threaded Steerer Lengths
Postby drubie » Sun Apr 07, 2013 8:35 pm
I misunderstand what you're asking then - you said you found a (presumably) carbon fork that just has too much steerer on it, getting that cut to fit your cadex frame is trivial.QuangVuong wrote:Current forks are just some Giant aero composite forks. Im wanting a full CF bike, , but finding a 1" fork is proving to be a little difficult.
but really, that's rubbish. We get none of it because the choices are illusory.
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Re: Threaded Steerer Lengths
Postby QuangVuong » Sun Apr 07, 2013 8:39 pm
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Re: Threaded Steerer Lengths
Postby kukamunga » Sun Apr 07, 2013 9:15 pm
A 20mm stackheight threaded headset? I think NOTQuangVuong wrote:..... a 120mm steerer tube...... fork which has a 140mm steerer...... headset 37.5mm stack. Are there any headsets which are thin enough to fit the fork?
I'd be using some very strong Loctite on the threadsOr is my only option to not use the lock nut, and instead have a 1 1/8" quill adapter to keep the bearing top and the first nut from unscrewing?
Bar standard sizes are 25.4mm or 26.0mm, each using specific size stems. Some manufacturers (Ritchey being one, I think) make 25.8mm bar clamp size bars which they claim will be ok in either 25.4 and 26.0 stems. 26.0mm bar bore 1 1/8" threadless stems are pretty common - try looking here. 25.4mm quill stems with 26.0mm bar bore are very rare, as are 1" threadless stems (though I have a fair collection)But theres another issue. I cant seem to find a stem which is for a 1 1/8" steerer and the other end for a 25.8mm bar. Or have I missed soemthing?
You are potentially going to waste a lot of time and money trying to find a threaded 1" carbon road fork, if any exist at all (the steerer is going to have to be steel to be threaded or modified). Bite the bullet and go threadlessOtherwise, I can just search for another CF fork. Anyone have one to suit? 160mm would suit mine I reckon.
And why did you start up another thread on this build when you had one already with lots of info elsewhere? This one just confuses things.....
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Re: Threaded Steerer Lengths
Postby QuangVuong » Sun Apr 07, 2013 9:43 pm
I can see that 1" threadless CF forks slightly easier to find. So basically, I would need to swap out for a 1" threadless headset. Then find a 1" threadless fork, and a 1" stem(non quill).
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Re: Threaded Steerer Lengths
Postby kukamunga » Sun Apr 07, 2013 9:56 pm
1" threadless headsets are cheap and easy to source (Shimano/PRO), and I can probably help with a 1" stem
(* How about a link?)
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Re: Threaded Steerer Lengths
Postby QuangVuong » Sun Apr 07, 2013 10:06 pm
viewtopic.php?f=23&t=62443" onclick="window.open(this.href);return false;
Now looking, chainging to threadless aint so bad. So does that mean I can change to threadless, and use that Trek fork with an extender?
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Re: Threaded Steerer Lengths
Postby kukamunga » Sun Apr 07, 2013 10:26 pm
Assuming the 1" steerers on those forks are steel with an inside diameter of 22.2mm - yesQuangVuong wrote:Now looking, chainging to threadless aint so bad. So does that mean I can change to threadless, and use that Trek fork with an extender?
You'll need to check that what ever headset you get, the cup outer and crown race inner diameters match your head tube inner and steerer race diameters
You'll probably also need to source (or make) some harder to find 1" headset spacers
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Re: Threaded Steerer Lengths
Postby kukamunga » Mon Apr 08, 2013 12:51 pm
....and one or two 1" threadless stems (Bar Bore 26.0mm) I could possibly part with.....
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Re: Threaded Steerer Lengths
Postby QuangVuong » Mon Apr 08, 2013 1:07 pm
But, I believe I have found a 1" threaded fork with a very long steerer. Awaiting response from that person.
But I could convert another bike. However i cant remove the quill stem. The hex would get stripped if I keep going. I could cut the stem, but that's a waste of a good stem. I can cut a slit into the bolt head, but I reckon it'll be stuck tight anyway. Any way to do this?
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Re: Threaded Steerer Lengths
Postby kukamunga » Mon Apr 08, 2013 2:31 pm
(clic on pic)
Whatever fork you use, you'll need an unthreaded steerer at least 70mm longer than your headtube. The (Shimano) PRO MT-01 headset (caged balls) has a pretty low stack height of ~23mm, and should set you back no more than $20. Cartridge/sealed bearing types will be a lot taller and more expensive. My stems have a 'stack height' of around 40-45mm
^ PRO MT-01 on one of my Repcos. Once again, you need to check your frame and fork dimensions with a vernier/digital caliper to make sure headset will suit (check headset manufacturers website for their dimensions)
Having said all this, you seem to have sourced a number of different forks. How much time and money have you invested so far, and how much more do you need to spend adapting or modifying a second-hand carbon fork ???
^ Those prices were my AUD RRP "guesstimates".....In your other thread, kukamunga wrote:Shimano Australia do a PRO 1" carbon fork and 1" cartridge headset that should fit..... Priced at ~$200 and $40 respectively
When you are sorted with a fork and headset, PM me about the stems
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Re: Threaded Steerer Lengths
Postby QuangVuong » Mon Apr 08, 2013 3:15 pm
This threadless business will be with my Peugeot which has a Brinnelled race and stuck stem.
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Re: Threaded Steerer Lengths
Postby kukamunga » Mon Apr 08, 2013 3:32 pm
http://sheldonbrown.com/gloss_e-f.html#french
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Re: Threaded Steerer Lengths
Postby QuangVuong » Mon Apr 08, 2013 3:39 pm
How would you go about a stuck stem bolt?
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Re: Threaded Steerer Lengths
Postby nihaz » Sat Jul 12, 2014 3:31 pm
Sorry to revive a dead thread, but figured I should post in an existing one instead of creating a new one.
I'm undertaking a rebuild of an old frame which I picked up for cheap, but have made a blunder!
I purchased a record headset to fit onto this frame but neglected to calculate whether the steerer would be long enough...
Rookie mistake I'm kicking myself right this minute
I installed the headset and only realised when I could not utilise the locknut, see photos for clarification..
Will I need a new fork? Or could I get away with using some threadlock on the top nut?
I daresay it would be near impossible for me to get a cheap lugged fork to go with this frame, that and I just got the frame powder coated
Kind regards,
Wei
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Re: Threaded Steerer Lengths
Postby Duck! » Sat Jul 12, 2014 3:39 pm
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Re: Threaded Steerer Lengths
Postby nihaz » Sat Jul 12, 2014 3:46 pm
Advice on the best place to pick up a 1" threaded fork?
If possible I'd want one with campy dropouts like the one it's going to replace..
Thanks very much for your help..
Wei
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Re: Threaded Steerer Lengths
Postby QuangVuong » Sat Jul 12, 2014 3:59 pm
It's a bit odd though, if that fork is original to the frame, why is the steerer so short?
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Re: Threaded Steerer Lengths
Postby nihaz » Sat Jul 12, 2014 4:33 pm
Very quickly, and using a steel rule, the head tube length I've got is 170mm and the fork is for a 700 wheel.
I should have calculated earlier, but using the data provided by Campagnolo for the headset, total headset stack? height is 36.5mm
Which gives:
170+36.5=206.5mm
My measurement of the current fork is that it's just a touch under 200mm
I'm an idiot for not checking prior.
The bike and fork (both of which are original to each other) did not come with a headset (which I would assume would have had a stack height less than 36.5mm)
I purchased the record headset as part of the build and only now have I realised that my steerer tube length is too short.
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Re: Threaded Steerer Lengths
Postby RonK » Sat Jul 12, 2014 4:41 pm
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Re: Threaded Steerer Lengths
Postby nihaz » Sat Jul 12, 2014 5:12 pm
Current retail pricing for the Chris King Gripnut headset is around 140-160.
I want to compare the price between buying a new headset and getting a new fork before I buy one..
I'll post a WTB advert to see if anyone's got a spare fork lying around which might fit.
Wei
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