new tube install
09-01-23, 07:55 AM
#1
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Thread Starter
new tube install
front tire tube let go the other day at the stem base.
bought a couple Conti tubes to replace.
I'd watched a Park Tool vid regarding changing the tube with Calvin.
He referred to putting the tube and tire back in the same direction.
Since I didn't mark anything during the removal, is there away to tell what direction the tire is going or isn't it really that important in the long run?
Any reason to repair and save the old tube?
bought a couple Conti tubes to replace.
I'd watched a Park Tool vid regarding changing the tube with Calvin.
He referred to putting the tube and tire back in the same direction.
Since I didn't mark anything during the removal, is there away to tell what direction the tire is going or isn't it really that important in the long run?
Any reason to repair and save the old tube?
09-01-23, 08:01 AM
#2
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Some Continental tires are marked for direction of rotation. If not and they have a wedge shaped pattern, the wedge points forward. If you can't figure it out don't worry about it.
You don't have to take the tire all the way off to replace the tube, btw.
If the tube is leaking at the base of the stem it's junk.
You don't have to take the tire all the way off to replace the tube, btw.
If the tube is leaking at the base of the stem it's junk.
09-01-23, 08:50 AM
#4
Junior Member
Thread Starter
looking at the new box and tube partially inflated, wonder if I bought the right one.?
Also, while I'm at it. The OEM was 45mm stem and there were 60 & 800mm stem versions. Why would someone want such a long stem?
what I bought
what came off which was OEM (I think) from Cannondale.
Also, while I'm at it. The OEM was 45mm stem and there were 60 & 800mm stem versions. Why would someone want such a long stem?
what I bought
what came off which was OEM (I think) from Cannondale.
Last edited by metropical; 09-01-23 at 09:02 AM.
09-01-23, 09:00 AM
#5
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Tubes are made to fit a range of tire widths. So they give the minimum and maximum width of tire that the manufacture recommends the tube to be used for.
27" tires and 700C's only vary in bead seat diameter by 8 mm. So tubes for one can be used in the other. 700c has a BSD of 622mm and 27" a BSD of 630mm. Though a tube made exclusively for 27" tires might wrinkle or kink in a 700C.
Different brands of tubes might differ on what ranges of tire width their tubes are for.
Your tire is a 23mm width, then the tube might be considered too big. But if you are confident it doesn't have any wrinkles in it when installed and inflated, then you are probably okay. I wouldn't bust a gut to get it out of the tire if I'm not feeling any bumps from a wrinkle. I'd just ride it till it flats and then replace with something more appropriate.
27" tires and 700C's only vary in bead seat diameter by 8 mm. So tubes for one can be used in the other. 700c has a BSD of 622mm and 27" a BSD of 630mm. Though a tube made exclusively for 27" tires might wrinkle or kink in a 700C.
Different brands of tubes might differ on what ranges of tire width their tubes are for.
Your tire is a 23mm width, then the tube might be considered too big. But if you are confident it doesn't have any wrinkles in it when installed and inflated, then you are probably okay. I wouldn't bust a gut to get it out of the tire if I'm not feeling any bumps from a wrinkle. I'd just ride it till it flats and then replace with something more appropriate.
Last edited by Iride01; 09-01-23 at 09:08 AM.
09-02-23, 03:25 AM
#6
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Longer valve stems are needed for deep, aero cross-section rims.
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