Giant holes in carbon rim?
#1
commu*ist spy
Thread Starter
Giant holes in carbon rim?
I took a closer look at a pair of used carbon wheels i bought from a guy, who bought it from a guy, 2 months ago, and noticed that underneath the rim tape, there are two large holes drilled into them. the location of the holes are each around 120 degrees away from the valve stem, so not close to each other at all. the rim by default does not have spoke holes, so I'm assuming that these were drilled in order to easily replace spokes at those locations. That said, should I be worried about this? I mean, the wheel feels solid, except the rear braking sucks sometimes, and that's not uncommon with older wheels.
IMG_0223.jpg
IMG_0222.jpg
IMG_0223.jpg
IMG_0222.jpg
#3
Senior Member
Join Date: Feb 2012
Location: Rochester, NY
Posts: 18,100
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4212 Post(s)
Liked 3,883 Times
in
2,318 Posts
Or get an air bladder out? Andy
#4
Occam's Rotor
Join Date: Jul 2013
Posts: 7,248
Mentioned: 61 Post(s)
Tagged: 0 Thread(s)
Quoted: 2366 Post(s)
Liked 2,331 Times
in
1,164 Posts
This is a great option, allowing you to install 3 valve stems, and thus keep the wheel balanced, as well as greatly aiding the inflation process.
Who said innovation in cycling was dead?
Who said innovation in cycling was dead?
#5
Senior Member
Join Date: May 2008
Location: Zang's Spur, CO
Posts: 9,083
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 3376 Post(s)
Liked 5,529 Times
in
2,866 Posts
#6
Occam's Rotor
Join Date: Jul 2013
Posts: 7,248
Mentioned: 61 Post(s)
Tagged: 0 Thread(s)
Quoted: 2366 Post(s)
Liked 2,331 Times
in
1,164 Posts
Maybe it is for three-chambered tubes, so that if you get a puncture, you can keep riding.
#7
Banned
Each hole removes a part of a gram in weight, you did buy that for what little it weighs, right?
#8
Senior Member
Join Date: Nov 2014
Location: Eugene, Oregon, USA
Posts: 27,547
Mentioned: 217 Post(s)
Tagged: 0 Thread(s)
Quoted: 18382 Post(s)
Liked 4,515 Times
in
3,355 Posts
That doesn't appear to be a tubeless profile, so I'm not sure if there is any advantage of not having nipple holes.
And, if there were no spoke holes, there would be no reason to have rim tape.
It seems a bit odd, but appears to be more of an annoyance than an issue.
Weight will be increased because without holes, there would be no need for rim tape.
And, if there were no spoke holes, there would be no reason to have rim tape.
It seems a bit odd, but appears to be more of an annoyance than an issue.
Weight will be increased because without holes, there would be no need for rim tape.
#11
Pokemon Master
#12
Senior Member
Join Date: Nov 2014
Location: Eugene, Oregon, USA
Posts: 27,547
Mentioned: 217 Post(s)
Tagged: 0 Thread(s)
Quoted: 18382 Post(s)
Liked 4,515 Times
in
3,355 Posts
#13
commu*ist spy
Thread Starter
yoeleo has a line of wheels that doesn't have nipple holes. it's supposed to improve the rim's rigidity. not many wheel brands do this.