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Tube question about aero wheels

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Tube question about aero wheels

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Old 02-13-19, 08:39 PM
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Chipbyrd 
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Tube question about aero wheels

I just ordered a pair of aero wheels from LightBicycle. The rear is 56 and front is 46. What length stem will the tubes need? This is my first set of aeros.

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Old 02-13-19, 09:37 PM
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Presta valves come in many different lengths 32, 40, 48, 60 and 80mm are common.
Personally, I like to have at least 20mm of valve stem showing above the rim for easy pump head attachment... I'd go with the 80mm valve lengths.
Another option is to go with a shorter valve length and then add a valve stem extender - they come in all different lengths as well!

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Old 02-14-19, 07:39 AM
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Thanks!
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Old 02-14-19, 11:09 AM
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Carrying a valve extender (& the little valve core tool) is a good idea for that situation on the road

where the available tube has a short stem.
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Old 02-14-19, 12:01 PM
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A removable core presta, is the type that can be extended ... But It;s possible to accidentally unscrew the extender and let all the air out...

Non Removable core tubes wont do that..
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Old 02-14-19, 12:04 PM
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I have a variety of wheels so I generally buy 52mm tubes and just use an extender on my carbon wheels. Even if you DO buy 80mm tubes, I highly recommend carrying an extender for that random time you'll need to bum a tube off a stranger. I offered a guy one of my 52mm tubes one time as he sat stranded on the side of the road but he couldn't use it.
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Old 02-14-19, 12:12 PM
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I have two sets of carbon aeros, 41mm Reynolds, and 55mm Tokens. I use 80mm valve stems on both. I tried the extenders and found them more trouble than they're worth. I do carry an extender in my bag, just in case.
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Old 02-14-19, 12:31 PM
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Carry valve extenders. Personally, I use them all the time on my 55 and 66 wheels, as you can't buy latex tubes with 80 mm stems. In 30 or 40K miles, I've only had one extender ever leak, and that was because I went too long without just checking to be sure they were tight.

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