Hi Ray, I'm glad you're ok.
Pics of the rim are really scary. It makes me think that I'll have a
look at mine !
I sometimes ride this hill (living in SF) and man, it could have been
worst if you were speeding.
Take care !
David
--
You received this message because you are subscribed to the
since I ride s many hills and grades.
Lots
of braking.
From: Sean Whelan strummer_...@yahoo.com
To: rbw-owners-bunch@googlegroups.com
Sent: Wed, December 7, 2011 10:35:17 AM
Subject: Re: [RBW] Re: Near-Catastrophic Rim Failure
All of this talk has me
--- On Tue, 12/6/11, Grant Petersen gep71...@gmail.com wrote:
From: Grant Petersen gep71...@gmail.com
Subject: [RBW] Re: Near-Catastrophic Rim Failure
To: RBW Owners Bunch rbw-owners-bunch@googlegroups.com
Date: Tuesday, December 6, 2011, 2:08 AM
Many of you will remember, and all of
you can
--- On Tue, 12/6/11, Grant Petersen gep71...@gmail.com wrote:
From: Grant Petersen gep71...@gmail.com
Subject: [RBW] Re: Near-Catastrophic Rim Failure
To: RBW Owners Bunch rbw-owners-bunch@googlegroups.com
Date: Tuesday, December 6, 2011, 2:08 AM
Many of you will remember, and all of
you can
So I guess I'll wait to get that disc brake bicycle..the heavy
duty rims sound fantastic.
On Dec 5, 11:08 pm, Grant Petersen gep71...@gmail.com wrote:
Many of you will remember, and all of you can relate to Keith
Bontrager's maxim from the late '80s:
Light Strong Inexpensive: Pick Two
Or go disc with those rims!
On Tue, Dec 6, 2011 at 12:39 AM, charlie cl_v...@hotmail.com wrote:
So I guess I'll wait to get that disc brake bicycle..the heavy
duty rims sound fantastic.
On Dec 5, 11:08 pm, Grant Petersen gep71...@gmail.com wrote:
Many of you will remember, and all of
Ray:
Is it possible for you to measure the thickness of the failed area?
Even a rough idea such as half of original; quarter; or thin as a
soda can may be helpful when the rest of us check our rims. Given
the dimensions that Grant lists, I should pay a lot more attention to
rim wear. My
-to-point device to measure the
wall thickness, but I'll try and reference scale the pix somehow.
From: dougP dougpn...@cox.net
To: RBW Owners Bunch rbw-owners-bunch@googlegroups.com
Sent: Tue, December 6, 2011 8:18:15 AM
Subject: [RBW] Re: Near-Catastrophic Rim
Eric: My brother weighs within 10 lb of you and happily rides well built 32
spoke wheels with no long term (let alone short term) problems; he uses no
more than 8 cogs in back, but then the same spacing and hubs serve for 9
and 10, no? Or are 8 speed/130 mm hubs stronger than 9-10 speed same?
...@cox.net
To: RBW Owners Bunch rbw-owners-bunch@googlegroups.com
Sent: Tue, December 6, 2011 8:18:15 AM
Subject: [RBW] Re: Near-Catastrophic Rim Failure
Ray:
Is it possible for you to measure the thickness of the failed area?
Even a rough idea such as half of original; quarter; or thin as a
soda
On Dec 6, 2011, at 3:21 PM, Ray Shine wrote:
This will be the last time I come to this well over this issue, but here are
3 more pix of the failed rim sawn in cross-section. Pretty alarming! Look
here:
http://www.flickr.com/photos/8581354@N03/sets/72157628310179371/with/6467935809/
Ray,
Yeah, that sidewall looks pretty thin. Oddly enough, on the photo
with the white paper back, the inside of the rim looks thin, not just
the outside. Especially below the bead on the section pointed up.
Patrick - am one that prefers bike stuff overbuilt, not under. Have
had to learn over
apart, as well. I'm
tossing
that set of rims for good.
From: EricP ericpl...@aol.com
To: RBW Owners Bunch rbw-owners-bunch@googlegroups.com
Sent: Tue, December 6, 2011 5:22:04 PM
Subject: [RBW] Re: Near-Catastrophic Rim Failure
Ray,
Yeah, that sidewall looks
://www.flickr.com/photos/8581354@N03/sets/72157628310179371/with/6467935809/
--
*From:* dougP dougpn...@cox.net
*To:* RBW Owners Bunch rbw-owners-bunch@googlegroups.com
*Sent:* Tue, December 6, 2011 8:18:15 AM
*Subject:* [RBW] Re: Near-Catastrophic Rim Failure
Ray
We had a string of rim failures this summer, maybe 5-6 in just a few weeks (it
seemed). All were cases of simple wear, except in Eric's case, where there was
an obvious groove likely caused by a foreign object in an otherwise lightly
worn rim. One guy had worn out and cracked both rims in a
On Dec 5, 2011, at 2:35 AM, Jim Thill - Hiawatha Cyclery wrote:
We had a string of rim failures this summer, maybe 5-6 in just a few weeks
(it seemed). All were cases of simple wear, except in Eric's case, where
there was an obvious groove likely caused by a foreign object in an otherwise
Like everybody else, I am glad you are OK. Next to a fork failure, a
rim blowout is perhaps the worst mechanical failure.
If you use your rear brake for slowing, you'll wear out rear rims in
quick succession. Rear rims collect much more road grit than front
ones (spray from front wheel). The grit
Agree with Jim here - my rim failure was on a fairly new rim (less
than a week old), with less than 100 miles on it. 36 spokes. Just
happen to be a stone that cut really sharp and deep.
Will admit to having one bike with 32 hole rims. Otherwise,
everything is 36 hole. And even there I feel at
Lay a straightedge against the rim braking surface. As it wears, it will
become concave. If it has started to actually bulge then it should be
immediately removed from service and replaced because it is in active failure
mode. However, the concavity can make it look like the rim is bulging
...@bitstream.net
To: rbw-owners-bunch@googlegroups.com
Sent: Mon, December 5, 2011 6:20:36 PM
Subject: Re: [RBW] Re: Near-Catastrophic Rim Failure
Lay a straightedge against the rim braking surface. As it wears, it will
become
concave. If it has started to actually bulge then it should
This post makes me queasy. I put old wheels on my AHH frame that I got just
a few months ago. Figuring I'll save a little cash up front and buy nice
wheels later. The little wear indicator isn't showing yet but the rim
braking surface is well worn.
Think I'll be stepping up the hunt for new
Many of you will remember, and all of you can relate to Keith
Bontrager's maxim from the late '80s:
Light Strong Inexpensive: Pick Two
It works to some extent with all bike parts, but even IT can't come to
the rescue when the thing is just too light.
Do you know the thickness of the braking
First off - glad you are okay. Possibly could have been an overheated
rim. On the other hand, had a similar rim failure early this year on
my LHT (which is also a winter commuter). My LBS concluded that a
small stone (or something similar) got stuck in a brake pad and
quickly cut a deep groove
I've seen maybe fifteen rims fail this way, and ever time it's been
caused by rock-wear, as Eric suggested. That's not to say nothing else
can cause it, but that is (in my experience) the most common (100
percent) reason for it. Rim makers and tire makers build more wiggle-
room into their stuffs
not suggesting definitively
that
Rich built this wheel. I actually don't recall where I got it.)
From: grant grant...@gmail.com
To: RBW Owners Bunch rbw-owners-bunch@googlegroups.com
Sent: Sun, December 4, 2011 6:25:09 PM
Subject: [RBW] Re: Near-Catastrophic Rim Failure
Looks like thin side wall issues. Same thing happened to me lucky not
on a decent down.
On Dec 4, 4:35 pm, Ray r.sh...@sbcglobal.net wrote:
Took a nice ride across the bridge and up to Hawk Hill, planning to
get home in time to catch the 49er game at the end of 1st quarter. I
didn't make it.
26 matches
Mail list logo
