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The nut keeps the tube from moving around because the hole diameter is bigger than stem. You probably bought a tube for an aero rim which is taller than a regular rim.
Veronica
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Thread: question re presta valves
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07-17-2004, 04:00 PM #1
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question re presta valves
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As I've already posted, I changed my first flat tire today, and noticed that the presta valve on the new tube is considerably shorter than the valve on the first tube. What's that all about?
Also, what's the point of the little ring that screws onto the valve and sits at the rim? Is that to keep the valve from getting pushed down when I inflate it or check the pressure?
thx!2003 Trek 7500FX/standard saddle
2006 Trek Pilot 2.1/Serfas cutout saddle
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07-17-2004, 04:15 PM #2
"Ride lots!"
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07-18-2004, 02:17 AM #3
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thx Veronica. I learned a lot about tires this weekend!
2003 Trek 7500FX/standard saddle
2006 Trek Pilot 2.1/Serfas cutout saddle
