Advertise on Bikeforums.net



User Tag List

Page 1 of 2 12 LastLast
Results 1 to 25 of 33
  1. #1
    Senior Member
    Join Date
    Mar 2009
    Location
    Boise, ID.
    Posts
    1,253
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    This might be a dumb question - Presta tubes in a Shrader drilled rim?

    My recent purchase (C'dale t700) came with 700C ritchey "rock" rims, but they are oddly drilled for Shrader valves.

    I'd like to run presta valves as personal preference - can I simply swap tubes or is this a bad idea with the larger Shrader drilling?
    1993 Cannondale T700 - 1994 Specialized Rockhopper - Actionbent T1 (Electrification in progress!)

  2. #2
    Giant Puzzle jco1385's Avatar
    Join Date
    Jul 2009
    Location
    Alabama
    My Bikes
    Giant Rincon 23.5"
    Posts
    291
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

  3. #3
    Flying Under the Radar X-LinkedRider's Avatar
    Join Date
    Oct 2007
    Location
    Northeast PA
    My Bikes
    10' SuperiorLite SL Club | 06' Giant FCR3 | 2010 GT Avalanche 3.0 Disc
    Posts
    4,117
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    You can use the Presta valves due to the size, however it is HIGHLY not recommended. Because the hole is larger it leaves much more room for the tube or valve seem to come sticking through the rest of the opening in the hole.It will work, but It's not worth the random flats or tire explodes.
    12' SuperiorLite SL Pro w/ Sram Rival | 10' SuperiorLite SL Club w/ Sram Force | 06' Giant FCR (Dropbar) w/ Shimano 5700 | 10' GT Avalanche 3.0 Disc

  4. #4
    cab horn
    Join Date
    Jun 2004
    Location
    Toronto
    My Bikes
    1987 Bianchi Campione
    Posts
    28,295
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by jco1385 View Post
    +1

    Run those if you're doing what you plan on doing. Otherwise just get the correct tube.
    Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.

  5. #5
    Senior Member
    Join Date
    Mar 2009
    Location
    Boise, ID.
    Posts
    1,253
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks guys. I'll call down to my LBS and see if they have those grommets.
    1993 Cannondale T700 - 1994 Specialized Rockhopper - Actionbent T1 (Electrification in progress!)

  6. #6
    Senior Member DieselDan's Avatar
    Join Date
    Mar 2003
    Location
    Beaufort, South Carolina, USA and surrounding islands.
    My Bikes
    Cannondale R500, Motobecane Messenger
    Posts
    8,522
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    One stopgap trick is to put the stem nut inside the rim to prevent the tube from bulging out.
    Bikes use brakes to stop.

    If your bike has breaks, don't ride it.

  7. #7
    Senior Member
    Join Date
    Mar 2009
    Location
    Boise, ID.
    Posts
    1,253
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I plan on using this bike for touring, so I'd rather just do it correctly.

    Have a set of these en route. http://www.amazon.com/exec/obidos/tg...28WSA&v=glance - figure they will hold up better then a rubber grommet.

    I'll replace the tubes when they eventually can't be patched anymore. I prefer shrader valves on my vehicles, not my bicycles.
    1993 Cannondale T700 - 1994 Specialized Rockhopper - Actionbent T1 (Electrification in progress!)

  8. #8
    Flying Under the Radar X-LinkedRider's Avatar
    Join Date
    Oct 2007
    Location
    Northeast PA
    My Bikes
    10' SuperiorLite SL Club | 06' Giant FCR3 | 2010 GT Avalanche 3.0 Disc
    Posts
    4,117
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Good and quick you are with the purchasing. I am the same way. The rubber is nice for ease of installation and of course there can never be a sharp edge. But let us know how these metal ones work out. For a couple dollars what is the harm in trying everything out there you know.?
    12' SuperiorLite SL Pro w/ Sram Rival | 10' SuperiorLite SL Club w/ Sram Force | 06' Giant FCR (Dropbar) w/ Shimano 5700 | 10' GT Avalanche 3.0 Disc

  9. #9
    Bike addict, dreamer AdamDZ's Avatar
    Join Date
    Nov 2009
    Location
    Queens, New York
    My Bikes
    Surly Disc trucker (DIY), Fuji Reveal 1.0 (DIY MTB), Specialized Roubaix
    Posts
    5,161
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Yeah, I used the aluminum ones for years, no problems, I think they're called Presta Savers.

    Adam

  10. #10
    Senior Member
    Join Date
    Mar 2009
    Location
    Boise, ID.
    Posts
    1,253
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by X-LinkedRider View Post
    Good and quick you are with the purchasing. I am the same way. The rubber is nice for ease of installation and of course there can never be a sharp edge. But let us know how these metal ones work out. For a couple dollars what is the harm in trying everything out there you know.?
    I noticed they are made by Wheels Manufacturing, whom I've heard good things about. Figure they would be worth a shot for a few bucks, and didn't want to deal with replacing worn rubber grommets if one fails on tour. Might need to grab some new rim tape since they suggest installing these under the tape. Velox is cheap at the LBS though.
    1993 Cannondale T700 - 1994 Specialized Rockhopper - Actionbent T1 (Electrification in progress!)

  11. #11
    Senior Member mrrabbit's Avatar
    Join Date
    Dec 2007
    Location
    San Jose, California
    My Bikes
    2001 Tommasini Sintesi w/ Campagnolo Daytona 10 Speed
    Posts
    3,186
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Grab a box of 6 1/4" grommets from Gardner Bender? (GB in the electrical industry....) They'll be in a clear with red label plastic package at your local Orchards, Payless Hardware, Home Depot, etc.

    They look like the classic Cyclon base ship - not the "reimagined" one.

    On a circle on one side, snip off the edges of the circle in parallel...so you have two parallel opposing edges that are straight and two opposing edges that are curved.

    Pop in, ready to go. Plus you'll have 5 extra all for the same money you would pay for 1 at an LBS.

    =8-)

  12. #12
    Giant Puzzle jco1385's Avatar
    Join Date
    Jul 2009
    Location
    Alabama
    My Bikes
    Giant Rincon 23.5"
    Posts
    291
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    fwiw, velox is pretty good tape. i'd just peel it up, install the 'grommet' and put it back down. i see no need in replacing it.

  13. #13
    Senior Member
    Join Date
    Jul 2009
    Location
    East Tennessee
    My Bikes
    Rivendell--Sam Hilleborne, the only one I need.
    Posts
    154
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    In a touring sense, I believe rims drilled for Shrader with the inserts and Presta valves are at an advantage because either tube will work, and I can use whatever is available--even though that is more likely to be Shrader.

  14. #14
    Senior Member
    Join Date
    Mar 2009
    Location
    Boise, ID.
    Posts
    1,253
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by gamecock View Post
    In a touring sense, I believe rims drilled for Shrader with the inserts and Presta valves are at an advantage because either tube will work, and I can use whatever is available--even though that is more likely to be Shrader.
    Really? I've had more luck finding 700C tubes in Presta - at least @ the LBS and online. 26" tubes on the other hand are much more common in Shrader. That is a good point about either working though.

    On the tape I'll check what shape the existing stuff is when I get these adapters. Being a new (to me) bike I haven't had to remove the tires yet, but have the valve adapters and new tires en route, so I'll be in there soon enough.
    1993 Cannondale T700 - 1994 Specialized Rockhopper - Actionbent T1 (Electrification in progress!)

  15. #15
    Giant Puzzle jco1385's Avatar
    Join Date
    Jul 2009
    Location
    Alabama
    My Bikes
    Giant Rincon 23.5"
    Posts
    291
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    if you need a 700c tube with a schrader, you can sub in a 27" tube. they most always have the schrader. i was in the opposite situation last weekend. needed a 700c presta and only had a 27" schrader.

  16. #16
    New Orleans
    Join Date
    Jan 2006
    Posts
    2,527
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)
    In a pinch I just put a few wraps of rim tape-(bought a couple of big rolls years ago) around the stem-works ok. I usually have to split it down the middle because it is kinda wide. Grommet is nicer of course.
    Last edited by phoebeisis; 03-11-10 at 04:48 PM.

  17. #17
    Senior Member
    Join Date
    Jul 2009
    Location
    Lincoln Ne
    My Bikes
    RANS Stratus and a Mountain bike
    Posts
    226
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    The rims on my Rans Stratus are drilled for schrader tubes. However the bike came with the aluminium "grometts"and presta tubes. They have worked fine for 5 years. I might add that it does give you an option when touring in a pinch you can use either.

  18. #18
    Senior Member DieselDan's Avatar
    Join Date
    Mar 2003
    Location
    Beaufort, South Carolina, USA and surrounding islands.
    My Bikes
    Cannondale R500, Motobecane Messenger
    Posts
    8,522
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Look at this way: You can always find 27" tubes with scharder valves just about anywhere, but not presta valves. If you look at the size stamping on a 27" tube, most of the time it is co-labeled as 700c. If your ever out touring and you need a tube in a little town that only has a hardware store, chances are they will have a 27" scharder tube. With those rims, you can just pop out the grommet and install the new tube and continue enjoying your ride.

    Like layedback1 said.
    Bikes use brakes to stop.

    If your bike has breaks, don't ride it.

  19. #19
    Senior Member
    Join Date
    Mar 2009
    Location
    Boise, ID.
    Posts
    1,253
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I didn't consider the Shrader 27" tubes, but all my 27" bikes run presta valves currently.
    1993 Cannondale T700 - 1994 Specialized Rockhopper - Actionbent T1 (Electrification in progress!)

  20. #20
    Cabrőnista™ dprayvd's Avatar
    Join Date
    Jun 2002
    Location
    a high fructose corn, olé!
    Posts
    436
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by DieselDan View Post
    One stopgap trick is to put the stem nut inside the rim to prevent the tube from bulging out.
    'Tis no trick (but thats'a good disclaimer, DD). I do this on my Al presta rims. No valve rips, ever. I would not hesitate this longterm on a schrader hoop.
    .


    What is 50 miles of good road? Yes, I call it a very easy distance.

  21. #21
    Cabrőnista™ dprayvd's Avatar
    Join Date
    Jun 2002
    Location
    a high fructose corn, olé!
    Posts
    436
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    1+ to Operator's "correct tube" theory, tho.
    .


    What is 50 miles of good road? Yes, I call it a very easy distance.

  22. #22
    Senior Member DVC45's Avatar
    Join Date
    Dec 2006
    My Bikes
    Schwinn Paramount '91, Downtube Nova and I want more! :)
    Posts
    3,701
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Sorry to jump-in late and for a noob question, but, does drilling a presta rim to accept Schraeder tubes weakens the rim?
    I like the idea of drilling to beable to use both tubes, but I don't want a weakend rim either.

    Thanks in advance!
    "Cycling is for pleasure not penance"

  23. #23
    Senior Member
    Join Date
    May 2008
    Posts
    1,215
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by DieselDan View Post
    Look at this way: You can always find 27" tubes with scharder valves just about anywhere, but not presta valves. If you look at the size stamping on a 27" tube, most of the time it is co-labeled as 700c. If your ever out touring and you need a tube in a little town that only has a hardware store, chances are they will have a 27" scharder tube. With those rims, you can just pop out the grommet and install the new tube and continue enjoying your ride.

    Like layedback1 said.
    I had this exact problem. Luckily the hardware store also sold chainsaw files. It took me 15 minutes to "adapt" my Alex rims to fit a Schraeder tube.

  24. #24
    Senior Member
    Join Date
    Mar 2009
    Location
    Boise, ID.
    Posts
    1,253
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    So those nifty aluminum adapters arrived today. They don't fit! They drop straight through the valve's opening in the rim. They don't LOOK drilled but I'm beginning to wonder. Ugh, so much for that theory.
    1993 Cannondale T700 - 1994 Specialized Rockhopper - Actionbent T1 (Electrification in progress!)

  25. #25
    Low car diet JiveTurkey's Avatar
    Join Date
    Aug 2007
    Location
    Corvallis, OR, USA
    My Bikes
    2006 Windsor Dover w/105, 2007 GT Avalanche w/XT, 1995 Trek 820 setup for touring, 201? Yeah single-speed folder, 199? Huffy tandem.
    Posts
    2,397
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by corkscrew View Post
    So those nifty aluminum adapters arrived today. They don't fit! They drop straight through the valve's opening in the rim. They don't LOOK drilled but I'm beginning to wonder. Ugh, so much for that theory.
    The adapter goes straight through? The valve hole is really two holes, one near the tube, the other facing the center of the wheel. Does the adapter slide through both holes?

    If it only goes through one of them, slide it first through the smaller hole. If the smaller hole is the one nearer the center of the wheel, you'll need to also use the valve's nut to hold it in place. (Edit: However, if your rim is not very aero, then the adapter might be so long it sticks in past the rim tape, in which case it could damage the tube.)
    Quote Originally Posted by slopvehicle View Post
    Not wearing a helmet makes me more aware of my surroundings. I find myself anticipating the hardness of concrete 50 or 100 feet in front of me, it's almost a zen-like connection between my face and the pavement.

Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •