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#1
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27" tube on 700c rim?
Hello,
I need to replace a 700cx35 tube, and have a 27"x1 1/4" tire/tube available. The numbers are close. Will the 27" rube work on the 700c rim? Thanks. Andy |
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#2
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On Mon, 21 Mar 2005 18:53:45 -0800, aksjls wrote:
Will the 27" rube work on the 700c Err, maybe. you can usually go the other way since 700c is a wee bit smaller... |
#3
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On Mon, 21 Mar 2005 18:53:45 -0800, aksjls wrote:
Hello, I need to replace a 700cx35 tube, and have a 27"x1 1/4" tire/tube available. The numbers are close. Will the 27" rube work on the 700c rim? Thanks. Andy The tube will work; a little stretching or shrinkage doesn't hurt. The tyre won't work; a 27" tyre is 3mm longer in circumference than a 700C one, and this is enough to make it slip off the rim. Peter -- If you are careful enough in life, nothing bad -- or good -- will ever happen to you. |
#4
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Peter Keller wrote:
On Mon, 21 Mar 2005 18:53:45 -0800, aksjls wrote: Hello, I need to replace a 700cx35 tube, and have a 27"x1 1/4" tire/tube available. The numbers are close. Will the 27" rube work on the 700c rim? The tube will work; a little stretching or shrinkage doesn't hurt. The tyre won't work; a 27" tyre is 3mm longer in circumference than a 700C one, and this is enough to make it slip off the rim. A 27" tire (ISO 630) is 8mm larger in diameter at the bead seat than a 700c (ISO 622) tire. This makes it approximately 25mm longer (almost a foot!) in circumference. -- Benjamin Lewis A small, but vocal, contingent even argues that tin is superior, but they are held by most to be the lunatic fringe of Foil Deflector Beanie science. |
#5
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Benjamin Lewis writes:
I need to replace a 700cx35 tube, and have a 27"x1 1/4" tire/tube available. The numbers are close. Will the 27" rube work on the 700c rim? The tube will work; a little stretching or shrinkage doesn't hurt. The tyre won't work; a 27" tyre is 3mm longer in circumference than a 700C one, and this is enough to make it slip off the rim. A 27" tire (ISO 630) is 8mm larger in diameter at the bead seat than a 700c (ISO 622) tire. This makes it approximately 25mm longer (almost a foot!) in circumference. I don't know about the 8mm but 304.8mm is a foot. Just the same, if need be, a 27" tube will fit with a wrinkle or two into a 700c tire assuming it is the right cross section for the tire width. Wrinkles don't hurt but mounting a tire is easier if the tube doesn't have any. |
#6
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jobst brandt wrote:
Benjamin Lewis writes: I need to replace a 700cx35 tube, and have a 27"x1 1/4" tire/tube available. The numbers are close. Will the 27" rube work on the 700c rim? The tube will work; a little stretching or shrinkage doesn't hurt. The tyre won't work; a 27" tyre is 3mm longer in circumference than a 700C one, and this is enough to make it slip off the rim. A 27" tire (ISO 630) is 8mm larger in diameter at the bead seat than a 700c (ISO 622) tire. This makes it approximately 25mm longer (almost a foot!) in circumference. I don't know about the 8mm but 304.8mm is a foot. Oops! Well, I was only off by about 2 orders of magnitude! I stand by the 8mm larger diameter and 25mm larger circumference, however. 2.5 cm extra circumference seems more reasonable for an inner tube than 25 cm! -- Benjamin Lewis A small, but vocal, contingent even argues that tin is superior, but they are held by most to be the lunatic fringe of Foil Deflector Beanie science. |
#7
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Benjamin Lewis wrote:
jobst brandt wrote: Benjamin Lewis writes: A 27" tire (ISO 630) is 8mm larger in diameter at the bead seat than a 700c (ISO 622) tire. This makes it approximately 25mm longer (almost a foot!) in circumference. I don't know about the 8mm but 304.8mm is a foot. Oops! Well, I was only off by about 2 orders of magnitude! Err, 1 order of magnitude. sigh... -- Benjamin Lewis A small, but vocal, contingent even argues that tin is superior, but they are held by most to be the lunatic fringe of Foil Deflector Beanie science. |
#8
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" the 8mm but 304.8mm is a foot. Oops! Well, I was only off by about 2 orders of magnitude! I stand by the 8mm larger diameter and 25mm larger circumference, however. 2.5 cm extra circumference seems more reasonable for an inner tube than 25 cm! -- Benjamin Lewis that metric system will do it to you everytime. :) |
#9
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Jobst Brandt wrote:
Benjamin Lewis writes: I need to replace a 700cx35 tube, and have a 27"x1 1/4" tire/tube available. The numbers are close. Will the 27" rube work on the 700c rim? The tube will work; a little stretching or shrinkage doesn't hurt. The tyre won't work; a 27" tyre is 3mm longer in circumference than a 700C one, and this is enough to make it slip off the rim. A 27" tire (ISO 630) is 8mm larger in diameter at the bead seat than a 700c (ISO 622) tire. This makes it approximately 25mm longer (almost a foot!) in circumference. I don't know about the 8mm but 304.8mm is a foot. Just the same, if need be, a 27" tube will fit with a wrinkle or two into a 700c tire assuming it is the right cross section for the tire width. Wrinkles don't hurt but mounting a tire is easier if the tube doesn't have any. When I go to the bike store, they have a lot of tubes in boxes that are marked both "27-inch" and "700C" - this appears to be the norm. -- Tom Sherman - Earth (Downstate Illinois, North of Forgottonia) |
#10
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When I go to the bike store, they have a lot of tubes in boxes that are marked both "27-inch" and "700C" - this appears to be the norm. I've used them interchangably for 25 years, never saw a problem yet. |
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