Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 08-19-12, 03:15 PM   #1
indybiker01
I hate carnies
Thread Starter
 
indybiker01's Avatar
 
Join Date: May 2009
Location: Indianapolis
Bikes: Cannodale 2008 CAAD 9. Dura Ace components. Velocity Wheelsets. Selle Italia Carbino Saddle. Richey carbon components
Posts: 324
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Rear tire chunking out

Schwalwbe Ultremos

max psi 145

I run 115-120 psi

seems to be happeing in the middle of the tire.
My front tire looks okay. My rear tire is chunking out. Is it due to over inflation? It happened with my Michelin pro race tires but I got 1500 miles out of them. This tire has maybe 600
indybiker01 is offline   Reply With Quote
Old 08-19-12, 03:17 PM   #2
10 Wheels
Galveston County Texas
 
10 Wheels's Avatar
 
Join Date: Nov 2007
Location: In The Wind
Bikes: 2010 Expedition, 03 GTO
Posts: 29,375
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 99 Post(s)
I can't see the pics.
__________________
[SIZE=1][B]What I like about Texas[/B]
http://www.youtube.com/watch?v=PGukLuXzH1E

Set F1re To The Ra1n ( NY Night Rain Ride)
http://www.youtube.com/watch?v=W7jfcWEkSrI
10 Wheels is offline   Reply With Quote
Old 08-19-12, 03:35 PM   #3
indybiker01
I hate carnies
Thread Starter
 
indybiker01's Avatar
 
Join Date: May 2009
Location: Indianapolis
Bikes: Cannodale 2008 CAAD 9. Dura Ace components. Velocity Wheelsets. Selle Italia Carbino Saddle. Richey carbon components
Posts: 324
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by 10 Wheels View Post
I can't see the pics.
i will update as soon as my iphone is done restoring

*34 minutes to go.....so much for a long bike ride today....
indybiker01 is offline   Reply With Quote
Old 08-19-12, 03:40 PM   #4
10 Wheels
Galveston County Texas
 
10 Wheels's Avatar
 
Join Date: Nov 2007
Location: In The Wind
Bikes: 2010 Expedition, 03 GTO
Posts: 29,375
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 99 Post(s)
Is the chunking all the way around the tire?
__________________
[SIZE=1][B]What I like about Texas[/B]
http://www.youtube.com/watch?v=PGukLuXzH1E

Set F1re To The Ra1n ( NY Night Rain Ride)
http://www.youtube.com/watch?v=W7jfcWEkSrI
10 Wheels is offline   Reply With Quote
Old 08-19-12, 06:08 PM   #5
FBinNY 
Senior Member
 
Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Posts: 29,427
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 95 Post(s)
Whether on cars, trucks or bikes, tire chunking is usually caused by under-inflation or overloading. That causes excess tire flex which weakens the bond of the tread to the body plies. In the automotive world heat also comes into play, but I don't believe bike tires get hot enough to matter.

So, I have two questions.

1- what's the tire cross section?
2- what do you weigh?

You might also compare your weight, width and pressure to the data on the chart here.
__________________
FB
Chain-L site

An ounce of diagnosis is worth a pound of cure.

“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FBinNY is online now   Reply With Quote
Old 08-20-12, 06:45 AM   #6
Looigi
Senior Member
 
Looigi's Avatar
 
Join Date: Dec 2010
Bikes:
Posts: 8,942
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I've never seen a bike tire chunk unless it was really old and the rubber was hard from age (UV, oxidation, ozone exposure, oil contamination...). Really strange that your Mich Pro3 tires were doing it too. Could it be something with the storage conditions or way you're treating the tires?
Looigi is offline   Reply With Quote
Old 08-26-12, 06:32 PM   #7
indybiker01
I hate carnies
Thread Starter
 
indybiker01's Avatar
 
Join Date: May 2009
Location: Indianapolis
Bikes: Cannodale 2008 CAAD 9. Dura Ace components. Velocity Wheelsets. Selle Italia Carbino Saddle. Richey carbon components
Posts: 324
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
here are the pics from before my ride and at the 31 mile point when I started to feel a thump and had to be picked up

1500 miles is acceptable to me on a set of michellin pro race tires....this is my second set of schwalbes. the first set was replaced by shwalbe (actually recalled). They came out with the r.1 which supposed to be fixed.








indybiker01 is offline   Reply With Quote
Old 08-26-12, 06:36 PM   #8
10 Wheels
Galveston County Texas
 
10 Wheels's Avatar
 
Join Date: Nov 2007
Location: In The Wind
Bikes: 2010 Expedition, 03 GTO
Posts: 29,375
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 99 Post(s)
Cords are broken.
__________________
[SIZE=1][B]What I like about Texas[/B]
http://www.youtube.com/watch?v=PGukLuXzH1E

Set F1re To The Ra1n ( NY Night Rain Ride)
http://www.youtube.com/watch?v=W7jfcWEkSrI
10 Wheels is offline   Reply With Quote
Old 08-26-12, 06:45 PM   #9
indybiker01
I hate carnies
Thread Starter
 
indybiker01's Avatar
 
Join Date: May 2009
Location: Indianapolis
Bikes: Cannodale 2008 CAAD 9. Dura Ace components. Velocity Wheelsets. Selle Italia Carbino Saddle. Richey carbon components
Posts: 324
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Cords are broken.
I emailed schwalbe. I don't know if this is a warranty issue or not. I will let them decide.
indybiker01 is offline   Reply With Quote
Old 08-28-12, 08:53 PM   #10
indybiker01
I hate carnies
Thread Starter
 
indybiker01's Avatar
 
Join Date: May 2009
Location: Indianapolis
Bikes: Cannodale 2008 CAAD 9. Dura Ace components. Velocity Wheelsets. Selle Italia Carbino Saddle. Richey carbon components
Posts: 324
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Schwalbe has agreed to send me a new tire. In no way am I implying or saying that they admitted it was a product issue. I simply stated the facts and they said they would send me a different tire. I think they listened to my story and took all matters into consideration. I emailed them the info on 8-27-12 and they responded by the next day.

I will have to buy a matching tire as this is a different tire (they no longer make the R.1) but I am a satisfied customer.
indybiker01 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 03:45 PM.