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60mm or 80mm presta valves for 50mm rims?

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60mm or 80mm presta valves for 50mm rims?

Old 10-19-21, 10:32 AM
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sw20
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60mm or 80mm presta valves for 50mm rims?

what length presta valves do everyone use for their 50mm rims? just bit the bullet on some new wheels so need to new tubes!
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Old 10-19-21, 10:55 AM
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It depends on how Aero your rims are.
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Old 10-19-21, 12:11 PM
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I have both 50mm rims and 60mm rims. I use 60mm presta valves with the 50mm, and 80mm valves with the 60mm rims. For 50mm rims the 60mm valves are long enough for pump and inflator heads.
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Old 10-19-21, 12:39 PM
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Originally Posted by sw20 View Post
what length presta valves do everyone use for their 50mm rims? just bit the bullet on some new wheels so need to new tubes!
Silca valve extenders are the answer. I got tired of being crippled to specific tubes with permanent length valves on them. I played that game a while and got bitten when I double flatted and had one tube. Folks who offered help road side for the second tube........I had no extenders and their tube didn't have long valves.

More convenient to buy the tube you want and run extender.

These extenders do NOT require any thread tape or sealant. Just screw it on
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Old 10-22-21, 11:41 PM
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Originally Posted by sw20 View Post
what length presta valves do everyone use for their 50mm rims? just bit the bullet on some new wheels so need to new tubes!
I'd probably go with 80mm. Worst case, it's a little too long. But that's no problem -- most of the 700C bikes in my collection have valves that are way longer than needed because that's all that was available at the time I needed a new tube.
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Old 10-23-21, 06:59 AM
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yep, I have some 50mm depth tubeless and use a 65 mm valve, but could not find 60mm tubes, so had to go to 80mm which I think are too long.
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Old 10-23-21, 10:15 AM
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you could go with shorter reach & use these:
https://www.amazon.com/dp/B000FIE5SU..._it&th=1&psc=1

I have not used these, but might be just as good:
https://www.amazon.com/UNICHE-Presta.../dp/B07B8DCBMY
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Old 10-23-21, 07:36 PM
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For me, the perfect length would leave 15 mm of stem showing. I round up whenever I need to because 10 mm might not be enough for a good connection to some pump chucks.
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Old 10-24-21, 02:28 AM
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65mm would be the ideal solution but I can't find any inner tubes that are 65 or even 70mm. Will buy a 60mm and see if that works for my track pump, out on the road I use co2 and have a Specialized Swat mini co2 head so I think that should fit no problem. Just wondered how many people use 60mm in their 50mm rims. Might try the Continental 30mm extenders otherwise as I think 80mm would be too long.
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Old 10-24-21, 06:14 PM
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Originally Posted by Troul View Post
you could go with shorter reach & use these:
https://www.amazon.com/dp/B000FIE5SU..._it&th=1&psc=1

I have not used these, but might be just as good:
https://www.amazon.com/UNICHE-Presta.../dp/B07B8DCBMY

I've used extenders on 34mm length valves on some tubes and it worked very well
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Old 10-25-21, 12:58 AM
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I have 60 mm valves on my aero 50 mm rims and they protrude just barely enough.
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Old 10-25-21, 07:23 PM
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My rims are 55 mm and I use 80 mm valve stems. They stick out too far, but 60 mm are definitely too short. I guess i need 70 mm, which of course, doesn't exist.
For 50 mm rims, 60 mm valve stems seem skimpy, but 80 would be really long. Not that that's a problem. Just fugly.
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Old 10-25-21, 08:10 PM
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I'd get the 80s.
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Old 10-26-21, 04:22 AM
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just seen this on youtube, looks like there should be enough for track pump!

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