Singlespeed & Fixed Gear - help with wheelset

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tempz
05-13-10, 09:28 PM
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
http://i42.tinypic.com/1zwnfb4.jpg
http://i40.tinypic.com/2j5c0vd.jpg

AEO
05-13-10, 09:31 PM
you need presta tubes.
something like 48~52mm length valves.
tFUnK
05-13-10, 09:41 PM
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

tempz
05-13-10, 09:43 PM
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?
Leukybear
05-13-10, 09:50 PM
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.
shortshorts
05-13-10, 09:52 PM
What old wheels did you have?
Are you trying to put old 27" road bike tires on new 700c sized rims?
Scrodzilla
05-13-10, 10:07 PM
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.
tempz
05-13-10, 10:07 PM
yes but i dont know if theyre 27"
can't measure them :(
I really can't afford to buy anymore either haha :(
Scrodzilla
05-13-10, 10:07 PM
Can you read what's printed on the sides of the tires?
tempz
05-13-10, 10:13 PM
700 x 38c 40-622
Squirrelli
05-13-10, 10:20 PM
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...
evilcryalotmore
05-13-10, 10:21 PM
you need 700 cc tubes in presta valve
f50fan
05-13-10, 10:22 PM
lol 38 dang
Squirrelli
05-13-10, 10:27 PM
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.
shortshorts
05-13-10, 11:39 PM
sheesh, 38's are kinda wide.
you got the 700c part right though.
ichitz
05-14-10, 08:24 AM
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.
http://farm3.static.flickr.com/2747/4187724733_8fb7e8c540.jpg
but yes, i agree with everything u said