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PostPosted: Mon Apr 13, 2020 6:35 am 
Old School Hero

Joined: Fri Aug 24, 2018 9:48 am
Posts: 205
Location: Copenhagen, Denmark
I have one of these very shiny stems and it looks great.

But...

I can't get it tight enough to stop the bars twisting. The (red?!) stem bolt seems to be made of cheese, and the 4mm allen fitting doesn't help - I can't get enough torque on it, without risking rounding-out the bolt.

Does anyone know if this is a common problem, and if there is a replacement bolt, or a technique for solving this issue.

Thanks


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PostPosted: Mon Apr 13, 2020 7:24 am 
Retro Guru
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Joined: Thu May 17, 2012 11:04 am
Posts: 881
Location: manchester
Clean the 2 wedge surfaces of any burrs and lubricate , also any significant high spots on the outer diameter of the moving wedge. At the end of the day the strength of grip required is only a little more than the amount of torque needed to turn, which isn't a lot on a road bike but you do need a bit extra for piece of mind and pot holes.


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PostPosted: Mon Apr 13, 2020 1:16 pm 
Retro Guru
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Joined: Mon Oct 15, 2012 11:12 pm
Posts: 284
Location: Herts/Essex border, UK
What bars are you using ? Their diameter may be too small for the stem to clamp tightly. They should be a close fit when stem clamp is loose and tighten up with a few turns. If they rattle a lot in the clamp then they are probably too small.


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PostPosted: Mon Apr 13, 2020 1:34 pm 
Old School Hero

Joined: Fri Apr 30, 2010 4:55 pm
Posts: 151
I thought Cinelli made two versions of the Pinocchio stem, one with a 26.4mm clamp and one with a 26mm clamp? The link to the Campyoldy website shows Pinocchio stems of both clamp sizes.
http://www.campyoldy.co.uk/#cinelli-han ... -and-stems


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PostPosted: Mon Apr 13, 2020 1:41 pm 
Old School Hero

Joined: Fri Aug 24, 2018 9:48 am
Posts: 205
Location: Copenhagen, Denmark
Thanks for the replies - sorry if I wasn't clear - the red stem bolt is what tightens the stem in the steerer. The problem is the stem/bars twisting sideways, not the bars twisting in the stem.

I will try checking the wedge again, to see if there are any imperfections, and clean the inside of the steerer tube once more.


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