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.
Benjamin Lewis 22 March 2005 22:52:48 [ permanent link ]
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.
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.
Benjamin Lewis 22 March 2005 23:37:01 [ permanent link ]
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.
Benjamin Lewis 22 March 2005 23:39:55 [ permanent link ]
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.
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)
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