26mm bars-25.4 stem

User avatar
Mulger bill
Super Mod
Super Mod
Posts: 29060
Joined: Sun Sep 24, 2006 2:41 pm
Location: Sunbury Vic

26mm bars-25.4 stem

Postby Mulger bill » Sun Nov 11, 2012 10:47 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 :(
...whatever the road rules, self-preservation is the absolute priority for a cyclist when mixing it with motorised traffic.
London Boy 29/12/2011

User avatar
il padrone
Posts: 22931
Joined: Mon Apr 07, 2008 11:57 pm
Location: Heading for home.

Re: 26mm bars-25.4 stem

Postby il padrone » Sun Nov 11, 2012 10:56 pm

Coke can fix ??
Mandatory helmet law?
"An unjustified and unethical imposition on a healthy activity."

User avatar
coyote
Posts: 180
Joined: Sun Apr 22, 2012 2:33 pm
Location: Cairns - Queensland

Re: 26mm bars-25.4 stem

Postby coyote » Sun Nov 11, 2012 11:05 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? :|

User avatar
il padrone
Posts: 22931
Joined: Mon Apr 07, 2008 11:57 pm
Location: Heading for home.

Re: 26mm bars-25.4 stem

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

Ah..... yes :oops:

I think you may be shickered, Shaun.
Mandatory helmet law?
"An unjustified and unethical imposition on a healthy activity."

User avatar
Mulger bill
Super Mod
Super Mod
Posts: 29060
Joined: Sun Sep 24, 2006 2:41 pm
Location: Sunbury Vic

Re: 26mm bars-25.4 stem

Postby Mulger bill » Sun Nov 11, 2012 11:28 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.
...whatever the road rules, self-preservation is the absolute priority for a cyclist when mixing it with motorised traffic.
London Boy 29/12/2011

User avatar
greyhoundtom
Posts: 3023
Joined: Sun May 31, 2009 6:28 am
Location: Wherever the sun is shining
Contact:

Re: 26mm bars-25.4 stem

Postby greyhoundtom » Mon Nov 12, 2012 9:12 am

Last edited by greyhoundtom on Mon Nov 12, 2012 6:53 pm, edited 1 time in total.

User avatar
simonn
Posts: 3763
Joined: Thu Jan 31, 2008 11:46 am
Location: Sydney

Re: 26mm bars-25.4 stem

Postby simonn » Mon Nov 12, 2012 1:10 pm

Doesn't work safely. Very limited contact points between stem and bars.

User avatar
Mulger bill
Super Mod
Super Mod
Posts: 29060
Joined: Sun Sep 24, 2006 2:41 pm
Location: Sunbury Vic

Re: 26mm bars-25.4 stem

Postby Mulger bill » Mon Nov 12, 2012 11:34 pm

Thanks all, might have to rethink this.
...whatever the road rules, self-preservation is the absolute priority for a cyclist when mixing it with motorised traffic.
London Boy 29/12/2011

User avatar
Dan
Posts: 3289
Joined: Fri Oct 16, 2009 1:32 pm
Location: Vegas, baby

Re: 26mm bars-25.4 stem

Postby Dan » Tue Nov 13, 2012 8:52 am

or another stem...

Nobody
Posts: 10327
Joined: Thu Sep 18, 2008 12:10 pm
Location: Sydney

Re: 26mm bars-25.4 stem

Postby Nobody » Tue Nov 13, 2012 2:15 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.

User avatar
simonn
Posts: 3763
Joined: Thu Jan 31, 2008 11:46 am
Location: Sydney

Re: 26mm bars-25.4 stem

Postby simonn » Tue Nov 13, 2012 2:40 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.

User avatar
simonn
Posts: 3763
Joined: Thu Jan 31, 2008 11:46 am
Location: Sydney

Re: 26mm bars-25.4 stem

Postby simonn » Tue Nov 13, 2012 2:42 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.

User avatar
Mulger bill
Super Mod
Super Mod
Posts: 29060
Joined: Sun Sep 24, 2006 2:41 pm
Location: Sunbury Vic

Re: 26mm bars-25.4 stem

Postby Mulger bill » Tue Nov 13, 2012 9:18 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?
...whatever the road rules, self-preservation is the absolute priority for a cyclist when mixing it with motorised traffic.
London Boy 29/12/2011

User avatar
coyote
Posts: 180
Joined: Sun Apr 22, 2012 2:33 pm
Location: Cairns - Queensland

Re: 26mm bars-25.4 stem

Postby coyote » Wed Nov 14, 2012 10:38 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)

User avatar
Mulger bill
Super Mod
Super Mod
Posts: 29060
Joined: Sun Sep 24, 2006 2:41 pm
Location: Sunbury Vic

Re: 26mm bars-25.4 stem

Postby Mulger bill » Wed Nov 14, 2012 11:48 pm

This is it but it isn't...
Image
...whatever the road rules, self-preservation is the absolute priority for a cyclist when mixing it with motorised traffic.
London Boy 29/12/2011

Who is online

Users browsing this forum: chyaroh, Google Feedfetcher