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PostPosted: Tue Jun 11, 2013 12:56 pm 
retrobike rider
retrobike rider

Joined: Thu Apr 17, 2008 1:24 am
Posts: 7561
Location: Manchester
Does anyone know the alpinestars handlebar clamp diameter?
I'm making a shim to fit standard bars and can't remember the size!
Thanks.


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PostPosted: Tue Jun 11, 2013 1:15 pm 
retrobike rider
retrobike rider

Joined: Thu Apr 17, 2008 1:24 am
Posts: 7561
Location: Manchester
I seem to remember thinking I could use a steerer tube, so lets hope it's 28.6!


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PostPosted: Tue Jun 11, 2013 1:28 pm 
Old School Grand Master
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Joined: Tue Oct 19, 2010 9:55 am
Posts: 7058
Location: The land of Lea & Perrins
28.6 sounds about right.

Standard diameter is 25.4 and oversize is 31.8. I remember the Alpinestars "Mega Lite" (yeah right!) bars/stem being somewhere in between.

If the steerer tube method doesn't work, try a section of copper pipe. I've done it this way in the past when I had to fit some Azonic Chubbys to a Marzocchi direct mount stem.


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PostPosted: Tue Jun 11, 2013 10:47 pm 
Gold Trader / MacRetro rider
Gold Trader / MacRetro rider
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Joined: Sun May 25, 2008 11:03 am
Posts: 18207
Location: Sunny Glasgow
I immediatly thought oversized though i couldnt be 100% on that. But pretty sure on the 31.8mm :?


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PostPosted: Wed Jun 12, 2013 1:13 am 
retrobike rider
retrobike rider

Joined: Thu Apr 17, 2008 1:24 am
Posts: 7561
Location: Manchester
Thanks.
I found mine at work in the end! It is 28.6mm.
I have loads of aluminium tube so I'm making it from that.


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