26mm bars-25.4 stem

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26mm bars-25.4 stem

Postby Mulger bill » Sun Nov 11, 2012 9:47 pm

Will this work? The stem is a faceplate type.

Methinks I already know the answer but I can't find these bars in 25.4 :(
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by BNA » Sun Nov 11, 2012 9:56 pm

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Re: 26mm bars-25.4 stem

Postby il padrone » Sun Nov 11, 2012 9:56 pm

Coke can fix ??
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Re: 26mm bars-25.4 stem

Postby coyote » Sun Nov 11, 2012 10:05 pm

il padrone wrote:Coke can fix ??

Wrong way around, he has bars that are 26mm and a stem that is 25.4, so the question is is there enough play/slop to jam the bigger bars into the smaller stem? :|
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Re: 26mm bars-25.4 stem

Postby il padrone » Sun Nov 11, 2012 10:07 pm

Ah..... yes :oops:

I think you may be shickered, Shaun.
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Re: 26mm bars-25.4 stem

Postby Mulger bill » Sun Nov 11, 2012 10:28 pm

coyote wrote:
il padrone wrote:Coke can fix ??

Wrong way around, he has bars that are 26mm and a stem that is 25.4, so the question is is there enough play/slop to jam the bigger bars into the smaller stem? :|


Not a clue I don't have the bars yet. Found this old MTB stem and had an idea, been trying to find road bars to suit the planned aesthetic.
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Re: 26mm bars-25.4 stem

Postby greyhoundtom » Mon Nov 12, 2012 8:12 am

Last edited by greyhoundtom on Mon Nov 12, 2012 5:53 pm, edited 1 time in total.
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Re: 26mm bars-25.4 stem

Postby simonn » Mon Nov 12, 2012 12:10 pm

Doesn't work safely. Very limited contact points between stem and bars.
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Re: 26mm bars-25.4 stem

Postby Mulger bill » Mon Nov 12, 2012 10:34 pm

Thanks all, might have to rethink this.
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Re: 26mm bars-25.4 stem

Postby Dan » Tue Nov 13, 2012 7:52 am

or another stem...
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Re: 26mm bars-25.4 stem

Postby Nobody » Tue Nov 13, 2012 1:15 pm

simonn wrote:Doesn't work safely. Very limited contact points between stem and bars.
Agree. I used to think that 31.8 was a bad idea as it would add more of an aero disadvantage. But when you consider the mechanical leverage of the position of the hoods over the radius of the bar, it's no surprise that heavier people can have problems with bar slip. A change from 25.4 to 31.8 should increase the bar hold by 25% at the same stem bolt pressure.

My last two stems I've bought in 31.8 and shimming down to the 26 bar. In future I plan to upgrade to a 31.8 road bar.
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Re: 26mm bars-25.4 stem

Postby simonn » Tue Nov 13, 2012 1:40 pm

What length stem do you need? I might have a suitable one kicking around that you can have for peanuts ~$5-10 + post. OTTOMH, I think I have a 90mm (? rise) and 120mm (adjustable rise) that would work with 26mm (I think they are 25.8mm). The 90mm is two bolt (I use the same on my Kinesis with 26mm bars) and the 120mm is some funky thing that came with my OCR2.
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Re: 26mm bars-25.4 stem

Postby simonn » Tue Nov 13, 2012 1:42 pm

Nobody wrote:
simonn wrote:Doesn't work safely. Very limited contact points between stem and bars.
Agree. I used to think that 31.8 was a bad idea as it would add more of an aero disadvantage. But when you consider the mechanical leverage of the position of the hoods over the radius of the bar, it's no surprise that heavier people can have problems with bar slip. A change from 25.4 to 31.8 should increase the bar hold by 25% at the same stem bolt pressure.

My last two stems I've bought in 31.8 and shimming down to the 26 bar. In future I plan to upgrade to a 31.8 road bar.


It's not so much the entire diameter, but a 26mm with 25.4mm stem will have two small contact points rather than having contact the whole way around.
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Re: 26mm bars-25.4 stem

Postby Mulger bill » Tue Nov 13, 2012 8:18 pm

Thanks Simonn But the stem I have is the starting point so I have to find bars to suit.

I don't suppose reaming the clamping area out would be a good idea?
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Re: 26mm bars-25.4 stem

Postby coyote » Wed Nov 14, 2012 9:38 pm

Mulger bill wrote:Thanks Simonn But the stem I have is the starting point so I have to find bars to suit.

I don't suppose reaming the clamping area out would be a good idea?


Depends on how much meat there is in the clamping area? A lot of them are on the lean side as it is, could you put up a photo of the stem please. 8)
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Re: 26mm bars-25.4 stem

Postby Mulger bill » Wed Nov 14, 2012 10:48 pm

This is it but it isn't...
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