Does anyone know if there are any issues with using Aheadset bearings and stems on a fork with a threaded steerer (providing - of course that the threaded section starts above the Ahead bearings)?
It looks as if I might have to file the thread down a bit to get the stem to slide over the steerer and the stem won't be clamping a nice smooth steerer but is this really a big issue?
It just seems that threaded forks are far more readily available and cheaper than unthreaded - especially as I'm looking for cheap replacements for old-ish MTBs that I'm converting to rigid forks.
All help appreciated
Cheers
Stradageek
Threaded steerer and Aheadsets
Re: Threaded steerer and Aheadsets
any issues....? 
Yeah, unless it is reinforced in some way, you'll kill yerself.
Once the thread is cut on the steerer it is only ~0.6mm wall thickness, which is why quill stems should reach below all the screw threads on a threaded steerer. If you just clamp an A-head stem onto a threaded steerer, it is just a matter of time until it breaks...
cheers
Yeah, unless it is reinforced in some way, you'll kill yerself.
Once the thread is cut on the steerer it is only ~0.6mm wall thickness, which is why quill stems should reach below all the screw threads on a threaded steerer. If you just clamp an A-head stem onto a threaded steerer, it is just a matter of time until it breaks...
cheers
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~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~
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breakwellmz
- Posts: 1982
- Joined: 8 May 2012, 9:33pm
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Mike Sales
- Posts: 8355
- Joined: 7 Mar 2009, 3:31pm
Re: Threaded steerer and Aheadsets
I was out on a club run when I noticed something odd about the stem of one of the lads. I had a look. He had converted a threaded to an ahead stem by merely replacing the stem and lock nut. Very little of the steerer was clamped in the stem. I told him this was unsafe and warned the others. I kept well clear myself.
It's the same the whole world over
It's the poor what gets the blame
It's the rich what gets the pleasure
Isn't it a blooming shame?
It's the poor what gets the blame
It's the rich what gets the pleasure
Isn't it a blooming shame?
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Stradageek
- Posts: 1879
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Re: Threaded steerer and Aheadsets
Aha, I see your point!
Cheers
Stradageek
Cheers
Stradageek
Re: Threaded steerer and Aheadsets
still have a mark on my shoulder after my LBS did this to a bike without my knowledge and...yeah.....WALLOP!
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Stradageek
- Posts: 1879
- Joined: 17 Jan 2011, 1:07pm
Re: Threaded steerer and Aheadsets
Ouch!
The risk hadn't really dawned on me because I was experimenting with a frame with a very short headtube and a set of forks with a very long steerer so the thread didn't start until an inch or so above the bearing cup - should have thought it through!
Cheers
The risk hadn't really dawned on me because I was experimenting with a frame with a very short headtube and a set of forks with a very long steerer so the thread didn't start until an inch or so above the bearing cup - should have thought it through!
Cheers
Re: Threaded steerer and Aheadsets
FireCloud Cycles sell cheap forks. I bought two of the Sprint 26" 1" steerer ahead steel forks for my old mtbs recently.
Re: Threaded steerer and Aheadsets
This is a sealed cartridge bearing threaded headset with a quill to ahead adapter. If the steerer is too long make up the gap with spacers under the lockring.
