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9mm shorter steerer...
 

[Closed] 9mm shorter steerer. who's running it like that?

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[#6026982]

by which i of course mean 9mm shorter than toatl stack of headtube/set and stem.
do you still have your front teeth etc etc?
not looking for a load of bluster about how dangerous it is, and am aware of relevance of stem clamp bolt position, lower stack headsets, stems etc.
just considering it as a considered risk, so looking for [i]actual[/i] incedences of it being fine for years, or totally not!
thanks


 
Posted : 11/03/2014 12:15 pm
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I ran a slightly-shorter-than-it-should-be-steerer on my long-headtubed frame, after buying a second-hand fork with a shortish steerer.

I don't think it was quite as low as 9mm short though. I rode it happily, because the top of the steerer tube was above the centre-line of the upper pinchbolt.

Otherwise, I don't think it's really a risk worth taking.


 
Posted : 11/03/2014 12:21 pm
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I've snapped a steerer (not due to being too short though), and can confirm it's not a plesent experience.


 
Posted : 11/03/2014 12:28 pm
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Yeah about that.... for 12 months.

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Posted : 11/03/2014 12:30 pm
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Is that a sticker on top of the stem?


 
Posted : 11/03/2014 12:31 pm
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weeksey, looking at your pic, I'd say that was 5mm, which should be fine to clear the top cap.
9mm is probably a little too much though. That's about a quarter of the stem height. I'd personally look to remove a spacer (if you have any) or get a lower stack headset top cup or lower stack stem.


 
Posted : 11/03/2014 12:40 pm
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I was about to say it will depend on the height of the stem but you imply you know that (yet haven't stated it).


 
Posted : 11/03/2014 12:45 pm
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hmm, thanks folks. that looks like a bit less than 9mm weeksy?
and above the top bolt too?

not sure i'll get above the top bolt, and don't have all the stuff in one place so can't check. guess i'll just have to get it all together and have a look


 
Posted : 11/03/2014 12:54 pm
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I have done, on an mtb but not one that was used off road, not sure I'd do it again


 
Posted : 11/03/2014 12:56 pm
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I ran mine at 6-7mm for ages with no problems


 
Posted : 11/03/2014 1:16 pm
 Rich
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If the top bolt is still clamping around the steerer and not above it then I'm happy.


 
Posted : 11/03/2014 2:14 pm
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Lower stack stem, or headset an option?


 
Posted : 11/03/2014 2:15 pm
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i know all the sizes, but some are only on paper (or measured by my dad...)
and not wanting to change stem or headset, and obviously don't have spacers to remove, otherwise i wouldn't be considering it!

so what type of failure would you expect or have you seen? stem popping off steerer? or more likely deforming/damaging it?
cracked steerer thread i read this morning looked nasty


 
Posted : 11/03/2014 5:08 pm
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Is that a sticker on top of the stem?

No. It's a Ragley stem. We did them with a print across the top of the stem and the top cap.


 
Posted : 11/03/2014 5:23 pm