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 Alpina rim valve hole diameter

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Mr Griso
Tanabuso
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PostSubject: Alpina rim valve hole diameter   Sat Nov 29, 2014 1:27 am

I am going to break the bead and install an angled air valve in the rear wheel of the beloved GRiSO, the season is over and garage time is available. Does anyone know the valve hole diameter? I know 11,3 mm is common but I understand that there are other standards as well.

/Ron
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Steak
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PostSubject: Re: Alpina rim valve hole diameter   Sat Nov 29, 2014 10:58 am

The stem diameter for the Alpina wheels is the 8.3 mm version, but they won't work on our rear wheels. The spokes are closer together on the rear that on the front, which is why the rear uses a vertical stem. The spoke wells are too close to accommodate the base width of the angled valve steams like those from Ariete. There is no room for the stem to seat and seal against the rim.

Unless you can source one with a narrower base, you are stuck with the straight valve stem in the rear.

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2012 MOTO GUZZI GRiSO 1200SE

2013 MOTO GUZZI STELVIO 1200NTX - Orange Blossom Special
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Mr Griso
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PostSubject: Re: Alpina rim valve hole diameter   Sat Nov 29, 2014 11:51 am

Ok, thank you Steak. Glad I asked before I broke the bead........

/Ron
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Ralf z
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PostSubject: Re: Alpina rim valve hole diameter   Sat Nov 29, 2014 1:05 pm

I just carry the screw on type, incase I need to top up with air.
But don't leave them on as they are just a way to get air in.
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Mr Griso
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PostSubject: Re: Alpina rim valve hole diameter   Sat Nov 29, 2014 1:55 pm

Ralph,
I have seen the screw on type and maybe that is the way to go. I will do some further roaming on the web and see if there is an alternative to the Arete valve.
/Ron
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wardest
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PostSubject: Re: Alpina rim valve hole diameter   Sat Feb 21, 2015 4:20 am

Perusing eBay found this.  

90 deg valve stems

ebay clicky
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Mr Griso
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PostSubject: Re: Alpina rim valve hole diameter   Sat Feb 21, 2015 9:41 am

Do you think they are slim enough to fit a GRiSO spoked rear wheel?

//Ron
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Steak
L'Innominato
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PostSubject: Re: Alpina rim valve hole diameter   Sat Feb 21, 2015 12:07 pm

They look to be similar spec to the Ariete version, but who knows.  He lists the SE years (2012-15) as compatible, but who knows.  They do look very nice.

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2012 MOTO GUZZI GRiSO 1200SE

2013 MOTO GUZZI STELVIO 1200NTX - Orange Blossom Special
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Grisonut
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PostSubject: Re: Alpina rim valve hole diameter   Sat Feb 21, 2015 12:11 pm

Those might work actually...
As it is, I get to the valve by the exhaust side. Lot easier without the rotor in the way. Wink
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Mr Griso
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PostSubject: Re: Alpina rim valve hole diameter   Sun Feb 22, 2015 4:34 am

So do I Pascal, but an angled valve would be nice....
/Ron
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Mr Griso
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PostSubject: Re: Alpina rim valve hole diameter   Sun Feb 22, 2015 4:46 am

Just placed an order for one Strada 83 degree 8.3 mm valve. Hopefully it will fit......

//Ron
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mark111
Grignapoco
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PostSubject: Re: Alpina rim valve hole diameter   Sun Feb 22, 2015 5:14 am

Ron,
Keep us posted, there are about 80 people who will jump all over these if they work correctly.
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Grisonut
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PostSubject: Re: Alpina rim valve hole diameter   Sun Feb 22, 2015 6:24 am

Yeah I'll be following this thread as well...
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DungeonMaster
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PostSubject: Re: Alpina rim valve hole diameter   Sun Feb 22, 2015 6:25 am

Fortunately my 1100 had angled stems when I got the bike.
Unfortunately I do not know the answers to the tech specifics you are asking.

DM
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Mr Griso
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PostSubject: Re: Alpina rim valve hole diameter   Sun Feb 22, 2015 6:29 am

Sure will, but it will probably take 3 to 4 weeks depending on when the valve arrives...

//Ron
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Grisonut
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PostSubject: Re: Alpina rim valve hole diameter   Sun Feb 22, 2015 6:34 am

Ssssok, I would not mess with it until my next tire change anyway...
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Mr Griso
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PostSubject: Re: Alpina rim valve hole diameter   Fri Apr 24, 2015 1:05 am

Sad ending,

I ordered the 8,3 mm Strada valve from Misano Moto...... They sent the wrong diameter valves and after e-mail conversations trying to get the correct size valves and then waiting for a long time I give up. They were going to send new valves......They never did!!?!

//Ron
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PostSubject: Re: Alpina rim valve hole diameter   Today at 7:58 pm

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Alpina rim valve hole diameter
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