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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 05-13-10, 09:28 PM   #1
tempz
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help with wheelset

so i brought some wheels but the stem valve is very narrow and the tube wont fit inside it.
Very annoyed right now because i have to fork out some more money. Was wondering would i need new special tyres for these type of rims aswell? Sorry i'm new to this all and wheels and tyres.

I've provided some pictures

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Old 05-13-10, 09:31 PM   #2
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you need presta tubes.
something like 48~52mm length valves.
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Old 05-13-10, 09:41 PM   #3
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or you can drill out the hole to widen it. but i would just get some presta valve tubes.

edit: drilling out the hole to make it bigger won't solve the problem you'll have with short valve shraeder tubes. so just get some long valve prestas
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Old 05-13-10, 09:43 PM   #4
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what about tyres? they seem the same size but when i put them on they get larger?

do i need specific tyres for these rims now?
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Old 05-13-10, 09:50 PM   #5
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or you can drill out the hole to widen it. but i would just get some presta valve tubes.

edit: drilling out the hole to make it bigger won't solve the problem you'll have with short valve shraeder tubes. so just get some long valve prestas
Don't do that!.... presta valved tubes are wayyy batter in many aspects and more common these days compared to Schneider valves; and because once you drill it you cannot go back.
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Old 05-13-10, 09:52 PM   #6
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What old wheels did you have?
Are you trying to put old 27" road bike tires on new 700c sized rims?
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Old 05-13-10, 10:07 PM   #7
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once you drill it you cannot go back.
Not necessarily true as there are inserts you can put into a Schrader hole to make it Presta-compatible.
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Old 05-13-10, 10:07 PM   #8
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yes but i dont know if theyre 27"
can't measure them
I really can't afford to buy anymore either haha
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Old 05-13-10, 10:07 PM   #9
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Can you read what's printed on the sides of the tires?
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Old 05-13-10, 10:13 PM   #10
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700 x 38c 40-622
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Old 05-13-10, 10:20 PM   #11
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You can't say Presta valve tubes are better in many aspects, they are both made to keep air in the tube and provide an excellent seal. I'd say Schrader is somewhat more convenient because I could use compress air at gas stations to fill up my tires if I wanted to. Presta valves tubes are better for narrower wheels IMHO, a large hole might weaken the wheel...
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Old 05-13-10, 10:21 PM   #12
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you need 700 cc tubes in presta valve
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Old 05-13-10, 10:22 PM   #13
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lol 38 dang
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Old 05-13-10, 10:27 PM   #14
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700 x 38c 40-622
Your rim might not be able to handle a 38 wide tire, it is best for you to get a narrower tire. Also, when you buy a tube ask for a tube with 60mm valve stem.
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Old 05-13-10, 11:39 PM   #15
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sheesh, 38's are kinda wide.
you got the 700c part right though.
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Old 05-14-10, 08:24 AM   #16
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I'd say Schrader is somewhat more convenient because I could use compress air at gas stations to fill up my tires if I wanted to.

but yes, i agree with everything u said
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