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Follow up question: 650c tubes for 650b?
I got a bunch of 622/700c tubes. Not a single tube for 584/ 650B though. So I thought perhaps I could use the 700c tubes in the 650B.
On a scale of 1-10 (10 being really idiotic), how inadvisable is this? Last edited by echappist; 07-30-2020 at 07:29 PM. |
#2
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dont do that.
now 26" mtb tubes, is OK and even most tubes are advertised as cross compatible.
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http://less-than-epic.blogspot.com/ |
#3
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I have some first hand experience here, having once grabbed the wrong tube prior to a ride.
It doesn't work, unless your goal is to use Uber/Lyft. |
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Thanks, folks, duly noted
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#5
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Following up from the original question, what about 650c tubes (18-25 mm) in a 650b? 650b has a rim diameter of 584 mm; 650c is 571 mm. Not a lot of places have a tube that's 584 mm x 18-25 mm, thus making me wonder if I could get by with 650c.
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What tires are you running? |
#7
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That'll work. Generally using 'smaller' tube in a 'bigger' tire works ok..the rubber gets thinner but it'll work. I know a guy who carried 26in MTB tubes for his 29er, 'cuz they were lighter'..true story.
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Chisholm's Custom Wheels Qui Si Parla Campagnolo |
#8
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You want to watch out for excessive width because it's virtually impossible to stuff a too-wide tube into a tire and not get a flap of tube caught under the bead, which when inflated will cause an explosive blowout. Generally, 700C tubes are just too large. And 650C -- as mentioned in the thread title -- are all wrong (much too narrow). But I suspect that's a typo. Last edited by palincss; 07-31-2020 at 07:01 AM. |
#9
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Do you have a 650B tire that's 18-25mm wide? I suppose they may exist (although I can't understand why) but if you try to use a tube that narrow in a 38-42mm tire it's going to be stretched way too thin.
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#10
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Thanks for chiming in, everyone
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This is for my wife, who finds the 700C wheels just a bit unstable when standing. Granted, she only started riding "real bikes" last year, and it may just a thing that needs adaptation. Though on her commuter bike (which has 700 x 35 tires but a lower saddle position), she's a lot more comfortable when stopped at a light. Last edited by echappist; 07-31-2020 at 09:55 AM. |
#11
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Schwalbe thinks the correct tube for the Schwalbe One 25-584 is the Schwalbe SV-12B, which (according to https://www.schwalbetires.com/bike_tires/tubes/finder Schwalbe North America is in stock unboxed article no. 10523213 $8.02 ea. You can order it directly on the page I provided the link for.
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