700 cc rear wheel can't take the punishment

I hope someone from this excellent group can help me with this
problem.

I'm a commuter who's rear wheel can't seem to take the punishment.
It's constantly going out of round and spokes are losing tension. It
sounds like I'm making popcorn on my ride into work.

It's a 700 cc rim with a disk brake rotor and my lbs just says bring
the wheel in and we'll true it. They have nothing stronger.

Is there a 700 cc, disk brake rear wheel out there that can take the
punishment? The streets I ride on are brutal and I ride with a slick
pumped to about 110 psi. Perhaps I'm asking too much.

TIA for all replies.

Peter H

On 05/30/2012 08:35 PM, Peter H wrote:
I hope someone from this excellent group can help me with this
problem.

I'm a commuter who's rear wheel can't seem to take the punishment.
It's constantly going out of round and spokes are losing tension. It
sounds like I'm making popcorn on my ride into work.

It's a 700 cc rim with a disk brake rotor and my lbs just says bring
the wheel in and we'll true it. They have nothing stronger.

Is there a 700 cc, disk brake rear wheel out there that can take the
punishment? The streets I ride on are brutal and I ride with a slick
pumped to about 110 psi. Perhaps I'm asking too much.

TIA for all replies.

Peter H


I doubt you have the absolute strongest rim on the market. First of all
it's a "700C" rim AKA ISO 622 (or maybe "29er" if this is a MTB type
thing.) That out of the way...

- what make/model bicycle is this?
- can you tell what brand/model your existing rim is?
- how many spokes? (probably 32 or 36 I would hope, on a commuter)
- how many speeds in the rear? (8/9/10?)
- What brand rear derailleur/shifter do you have, and what model? (e.g.
Shimano 105)
- what size tires are you running? (e.g. 25-622 or 700cx25)

with the above info I'm sure someone can come up with a recommendation
for a bomb-proof wheel for you.

If your roads are truly "brutal" I'm thinking you might want to consider
running at least a 28mm tire if you can fit it. 32s even at least by my
inexpert seat of the pants don't seem to be a huge detriment, and you
can then run lower pressures for a better ride.

nate

--
replace "roosters" with "cox" to reply.
http://members.cox.net/njnagel

On May 31, 1:35*am, Peter H wrote:
I hope someone from this excellent group can help me with this
problem.

I'm a commuter who's rear wheel can't seem to take the punishment.
It's constantly going out of round and spokes are losing tension. It
sounds like I'm making popcorn on my ride into work.

It's a 700 cc rim with a disk brake rotor and my lbs just says bring
the wheel in and we'll true it. They have nothing stronger.

Is there a 700 cc, disk brake rear wheel out there that can take the
punishment? The streets I ride on are brutal and I ride with a slick
pumped to about 110 psi. Perhaps I'm asking too much.

TIA for all replies.

Peter H

For rough roads 110psi sounds like you are probably using a 23 or 25mm
tyre. It's really not big enough on the back and best to fit the
biggest that will fit within the limitations of the frame. Usually
using a tyre that can cope at around 70psi will bring the desired
result.

On May 30, 5:54*pm, Nate Nagel wrote:
On 05/30/2012 08:35 PM, Peter H wrote:









I hope someone from this excellent group can help me with this
problem.

I'm a commuter who's rear wheel can't seem to take the punishment.
It's constantly going out of round and spokes are losing tension. It
sounds like I'm making popcorn on my ride into work.

It's a 700 cc rim with a disk brake rotor and my lbs just says bring
the wheel in and we'll true it. They have nothing stronger.

Is there a 700 cc, disk brake rear wheel out there that can take the
punishment? The streets I ride on are brutal and I ride with a slick
pumped to about 110 psi. Perhaps I'm asking too much.

TIA for all replies.

Peter H

I doubt you have the absolute strongest rim on the market. *First of all
it's a "700C" rim AKA ISO 622 (or maybe "29er" if this is a MTB type
thing.) *That out of the way...

- what make/model bicycle is this?
- can you tell what brand/model your existing rim is?
- how many spokes? (probably 32 or 36 I would hope, on a commuter)
- how many speeds in the rear? (8/9/10?)
- What brand rear derailleur/shifter do you have, and what model? (e.g.
Shimano 105)
- what size tires are you running? (e.g. 25-622 or 700cx25)

with the above info I'm sure someone can come up with a recommendation
for a bomb-proof wheel for you.

If your roads are truly "brutal" I'm thinking you might want to consider
running at least a 28mm tire if you can fit it. *32s even at least by my
inexpert seat of the pants don't seem to be a huge detriment, and you
can then run lower pressures for a better ride.

I would also be curious to find out what kind of rim the OP is using.
I had Open Pros as OEM rims on a disk brake CX bike, and they were
fine . . . until they cracked. You had to run pretty good tension to
keep them straight, and back then, I wasn't using spoke goop. I'm now
using a Velocity Aerohead touring disk rim that is probably too light
for me, but I am running thinner spokes and using goop (experimental
use of teflon containing pipe dope that seems to be working well --
poor man's Wheelsmith spoke prep). The wheel is holding up well so
far, and it takes a ton of abuse, and I run high pressure tires.

If I were to do it all over again, I would go hunting for a good,
cheap, mid-weight (450g - 550g) disk specific rim with a beefy spoke
bed. Maybe something like this:

http://www.alexrims.com/product_deta...=4&cat=4&id=85

-- Jay Beattie.

On May 30, 6:35*pm, Peter H wrote:
I hope someone from this excellent group can help me with this
problem.

I'm a commuter who's rear wheel can't seem to take the punishment.
It's constantly going out of round and spokes are losing tension. It
sounds like I'm making popcorn on my ride into work.

It's a 700 cc rim with a disk brake rotor and my lbs just says bring
the wheel in and we'll true it. They have nothing stronger.

Is there a 700 cc, disk brake rear wheel out there that can take the
punishment? The streets I ride on are brutal and I ride with a slick
pumped to about 110 psi. Perhaps I'm asking too much.

TIA for all replies.

Peter H

Before addressing any other issues, it's' "700C" not "700 cc." A
designation for an actual measurement of 622 mm. Perhaps a stupid
designation, but that's how it is.
DR

On May 30, 9:46*pm, Jay Beattie wrote:
On May 30, 5:54*pm, Nate Nagel wrote:









On 05/30/2012 08:35 PM, Peter H wrote:

I hope someone from this excellent group can help me with this
problem.

I'm a commuter who's rear wheel can't seem to take the punishment.
It's constantly going out of round and spokes are losing tension. It
sounds like I'm making popcorn on my ride into work.

It's a 700 cc rim with a disk brake rotor and my lbs just says bring
the wheel in and we'll true it. They have nothing stronger.

Is there a 700 cc, disk brake rear wheel out there that can take the
punishment? The streets I ride on are brutal and I ride with a slick
pumped to about 110 psi. Perhaps I'm asking too much.

TIA for all replies.

Peter H

I doubt you have the absolute strongest rim on the market. *First of all
it's a "700C" rim AKA ISO 622 (or maybe "29er" if this is a MTB type
thing.) *That out of the way...

- what make/model bicycle is this?
- can you tell what brand/model your existing rim is?
- how many spokes? (probably 32 or 36 I would hope, on a commuter)
- how many speeds in the rear? (8/9/10?)
- What brand rear derailleur/shifter do you have, and what model? (e.g.
Shimano 105)
- what size tires are you running? (e.g. 25-622 or 700cx25)

with the above info I'm sure someone can come up with a recommendation
for a bomb-proof wheel for you.

If your roads are truly "brutal" I'm thinking you might want to consider
running at least a 28mm tire if you can fit it. *32s even at least by my
inexpert seat of the pants don't seem to be a huge detriment, and you
can then run lower pressures for a better ride.

I would also be curious to find out what kind of rim the OP is using.
I had Open Pros as OEM rims on a disk brake CX bike, and they were
fine . . . until they cracked. *You had to run pretty good tension to
keep them straight, and back then, I wasn't using spoke goop. *I'm now
using a Velocity Aerohead touring disk rim that is probably too light
for me, but I am running thinner spokes and using goop (experimental
use of teflon containing pipe dope that seems to be working well --
poor man's Wheelsmith spoke prep). *The wheel is holding up well so
far, and it takes a ton of abuse, and I run high pressure tires.

If I were to do it all over again, I would go hunting for a good,
cheap, mid-weight (450g - 550g) disk specific rim with a *beefy spoke
bed. Maybe something like this:

http://www.alexrims.com/product_deta...=4&cat=4&id=85

Having used old light clincher road rims (~400ish g) off road on a rim
brake 29er with no apparent durability issues, I would have to think
that a change of tire and/or tire pressure would go a long toward
resolving wheel issues.
DR

On 5/30/2012 11:01 PM, DirtRoadie wrote:
On May 30, 6:35 pm, Peter wrote:
I hope someone from this excellent group can help me with this
problem.

I'm a commuter who's rear wheel can't seem to take the punishment.
It's constantly going out of round and spokes are losing tension. It
sounds like I'm making popcorn on my ride into work.

It's a 700 cc rim with a disk brake rotor and my lbs just says bring
the wheel in and we'll true it. They have nothing stronger.

Is there a 700 cc, disk brake rear wheel out there that can take the
punishment? The streets I ride on are brutal and I ride with a slick
pumped to about 110 psi. Perhaps I'm asking too much.

TIA for all replies.

Peter H

Before addressing any other issues, it's' "700C" not "700 cc." A
designation for an actual measurement of 622 mm. Perhaps a stupid
designation, but that's how it is.

The late Sheldon Brown explains: http://sheldonbrown.com/tire-sizing.html.

--
Tºm Shermªn - 42.435731°N, 83.985007°W
Post Free or Die!

Peter H wrote:
I hope someone from this excellent group can help me with this
problem.

I'm a commuter who's rear wheel can't seem to take the punishment.
It's constantly going out of round and spokes are losing tension. It
sounds like I'm making popcorn on my ride into work.

Who's been doing the tightening and re-truing? You or the LBS? It sounds
like the spokes aren't being tightened up enough and/or being properly
stress relieved after truing.

I've built all my own wheels for the last 15 years according to the
instructions in Jobst Brandt's book. I beat the hell out of my wheels
riding on some really rough pavement, and never once have I had to
re-true any of them; not even the one that had the rim sidewall wear
through after years of hard braking.

Get Brandt's book or find a LBS that knows how to do it properly.

--
K.

Lang may your lum reek.

On 31-5-2012 2:35, Peter H wrote:
I hope someone from this excellent group can help me with this
problem.

I'm a commuter who's rear wheel can't seem to take the punishment.
It's constantly going out of round and spokes are losing tension. It
sounds like I'm making popcorn on my ride into work.

It's a 700 cc rim with a disk brake rotor and my lbs just says bring
the wheel in and we'll true it. They have nothing stronger.


If they can't come up with at least a dozen suggestions for a better
wheel, a better shop who do know how to build wheels is probably your
first priority
--
/Marten

info(apestaartje)m-gineering(punt)nl

Per Nate Nagel:
If your roads are truly "brutal" I'm thinking you might want to consider
running at least a 28mm tire if you can fit it. 32s even at least by my
inexpert seat of the pants don't seem to be a huge detriment, and you
can then run lower pressures for a better ride.

I toyed around with 28's for awhile. Still have them hanging in
my garage. The rationale was that maybe I could keep up with
the roadies who are passing me at 18-20 mph while carrying on
relaxed conversations.

In fact, I found 28's at 90 psi tb good for 1 or 1.5 mph cruising
speed...

But I have gone back to my 38's because of the greatly-increased
comfort factor.
--
Pete Cresswell