New Bike stem slips under force...normal?

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kammybear
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New Bike stem slips under force...normal?

Postby kammybear » Tue Nov 20, 2012 15:34 pm

I've installed a new carbon 3T stem and handlebar.

Everything seemed easy enough for a first timer but if I clamp the wheel between my feet And move the handlebar, the stem slips. I ordered some finish line carbon paste and it still slips. I've followed every instruction and tip
I can find and it still does.

I took the bike put for a spin and jumped some curbs etc and it all stays in place and there are no noises or anything and it all seems solid...I can't remember if the previous stem did it as
Well as I had no reason to check.

Is this "normal". I can't think of a real life situation where the wheel would get clamped and make the stem slip? Am I over thinking it all and worrying?

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Levi_501
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Re: New Bike stem slips under force...normal?

Postby Levi_501 » Tue Nov 20, 2012 16:25 pm

Nip the bolts up a bit more.

You do not want the stem to slip while you are riding, it will scare the sh one t out of you.

kammybear
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Re: New Bike stem slips under force...normal?

Postby kammybear » Tue Nov 20, 2012 16:58 pm

They've gone as far as they can!

Only last resort I could think of was to remove the washers off two of the bolts but they appear to not be able to come off through the threaded bit!

I put lots of carbon paste on but after the stem slids on, a lot of it gets pushed to the top which Ibe cleaned off before going further!

It's doing my head in now but I guess it's a learning curve!

Do you think it's worth going and getting some new bolts without the washers and use those instead? Looking at the opposite bolt, there is about 1-2mm of more threadable space

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cooldad
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Re: New Bike stem slips under force...normal?

Postby cooldad » Tue Nov 20, 2012 17:33 pm

Use a real stem. Carbon stems are pointless and expensive.
But I wouldn't start messing with washers - it should fit - sure it's the right size?
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The Rookie
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Re: New Bike stem slips under force...normal?

Postby The Rookie » Tue Nov 20, 2012 21:38 pm

kammybear wrote:They've gone as far as they can!

That's a non sensicle answer, the stem clamps round the steerer, the more you do up the bolt the tighter it grips it as long as you don't go so tight it strips the thread, however there is no such thing as 'as far as they can'.

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benpinnick
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Re: New Bike stem slips under force...normal?

Postby benpinnick » Tue Nov 20, 2012 21:41 pm

Are you saying that the two sides of the stem now meet at the split? Otherwise just keep tightening.
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Levi_501
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Re: New Bike stem slips under force...normal?

Postby Levi_501 » Tue Nov 20, 2012 21:58 pm

kammybear wrote:They've gone as far as they can!


Sounds like you need...

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Greer_
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Re: New Bike stem slips under force...normal?

Postby Greer_ » Tue Nov 20, 2012 22:55 pm

Any chance you could've bought a stem for a 1.5" steerer rather than 1.125"?

kammybear
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Re: New Bike stem slips under force...normal?

Postby kammybear » Wed Nov 21, 2012 00:44 am

The two parts of the stem don't meet no, probably 2-3mm left.

The problem I have is that the bolts on the right seem thread through the bolts on the left. In order to stop the left ones rotating, I have to lever an allen key in the left ones while I screw the right ones which leaves about 2mm that's unusable...but if I try threading them alone, they just rotate in place and dont go in the last 2mm...I'll have to figure something out!

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cooldad
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Re: New Bike stem slips under force...normal?

Postby cooldad » Wed Nov 21, 2012 00:55 am

Bolts don't screw into bolts. Nuts maybe? Use a spanner. Nothing is designed to have an Allen key jammed down the side.
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cooldad
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Re: New Bike stem slips under force...normal?

Postby cooldad » Wed Nov 21, 2012 00:56 am

Maybe post a pic.
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kammybear
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Re: New Bike stem slips under force...normal?

Postby kammybear » Wed Nov 21, 2012 01:42 am

All sorted now.

Just experimented with the tightness of the two bottom bolts! Stiff as a porn stars penis now!


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