650c tubes in 650b tires?
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650c tubes in 650b tires?
Anyone tried this? All i could find was either huge 650bs or 650cs in smaller widths. I used the 650cs and the were fine in town but after some fairly rough, loaded touring i was getting flats where i couldnt find any tire puncture or much of a hole in the tube. They seemed to last longer the lower they were inflated so i believe i have just over stretched the tube. Gonna find some 650b by 1.5
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I’ve been using these.
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26" tubes are what you're looking for. Even Compass Rene Herse (ground zero for 650b wheels and tires) sells Schwalbe tubes labelled as 26" for 650b use.
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I've been really impressed by those Schwalbe tubes. Pump them up outside of a tire and they expand very evenly, unlike some cheap tubes. Just make sure the valve core is tight before using them.
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Ty everyone!
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https://www.jensonusa.com/Park-Tool-...alve-Core-Tool
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+1 on that! I spent a long time looking for a leak in a Schwalbe tube one night under a streetlight, until I finally realized that the core wasn’t fully tight. Now there’s a Park valve tool in each patch kit.
https://www.jensonusa.com/Park-Tool-...alve-Core-Tool
https://www.jensonusa.com/Park-Tool-...alve-Core-Tool
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It can be frustrating the first time it happens, but it's not a big deal to tighten down the valve cores (I don't even use a tool, just two pairs of pliers) right when you get brand-new tubes. It's my habit regardless of brand now.
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+1 on that! I spent a long time looking for a leak in a Schwalbe tube one night under a streetlight, until I finally realized that the core wasn’t fully tight. Now there’s a Park valve tool in each patch kit.
https://www.jensonusa.com/Park-Tool-...alve-Core-Tool
https://www.jensonusa.com/Park-Tool-...alve-Core-Tool
Thanks Dave! And ThermionicScott for the idea of tightening down all your cores before installing. I just got through patching about 20 tires, and inflated them all for an overnight leak test. 3 didn't make it, water test showed 2 had leaky valves.
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Reading this , ya do know that 650c 571mm ERD and 650b is like 584mm ?
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Good point, interchangeable.
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while the original poster mentioned tubes... but complained about flats... just wanted to confirm there was not the anticipation that 650 c and b are the same rim diameter.... I have watched customers storm into a shop demanding there must be something wrong...
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Tubes folded dont last that well either. I eventually found the size i needed and the shop i work at will begin stocking them. Most new 27.5 bikes have much wider than 38mm or 1.5" tires.
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BITD I witnessed customers coming back months after purchasing a bike complaining that their tires were going flat, not believing that air molecules leaks very slowly through the tube rubber itself.
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I probably shouldn't tell you about this one, then.
Damn good thing I stopped at 8.
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Some companies call 650B's 27.5's. I think that's stupid MTB terminology.
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Russell, that's the size I typically buy for 650b x 42's.
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One problem with using tubes for 590mm applications is that they’re usually Schrader valve while all of my 650b wheels are Presta. And I don’t plan on drilling them out.
Then again, I seem to be mostly setting up wheels tubeless these days.
Then again, I seem to be mostly setting up wheels tubeless these days.
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It's simple, really. 27" > 29" == 28" > 27.5" > 26"
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