Bloody Puncture...question
-
- Posts: 441
- Joined: Sat Jul 13, 2013 6:18 pm
Bloody Puncture...question
Postby DoubleSpeeded » Fri Aug 09, 2013 9:36 pm
. Continental City Tyres on my MTB... (simillar to this one)
First time got a puncture by glass...
found that the shrapnel had cut a small slit and wedged into the tyre but was easily pulled out (the glass was approx. no more than 5mm)... made a pinhole in the tube.
im very happy with these tyres... and i think they are discontinued.
ive put a new tube in and rode home..
would it be recommended i still continue to use the same tyres.. or is it something that would eventually wear open from that point.
its a non-folding tyre by the way.
First time got a puncture by glass...
found that the shrapnel had cut a small slit and wedged into the tyre but was easily pulled out (the glass was approx. no more than 5mm)... made a pinhole in the tube.
im very happy with these tyres... and i think they are discontinued.
ive put a new tube in and rode home..
would it be recommended i still continue to use the same tyres.. or is it something that would eventually wear open from that point.
its a non-folding tyre by the way.
- il padrone
- Posts: 22931
- Joined: Mon Apr 07, 2008 11:57 pm
- Location: Heading for home.
Re: Bloody Puncture...question
Postby il padrone » Fri Aug 09, 2013 9:51 pm
Keep using the tyre, you should have no further problems. If the tyre, when pumped up, shows a noticable cut you may want to put a patch on the tyre from the inside, or others have suggested using shoegoo.
Mandatory helmet law?
"An unjustified and unethical imposition on a healthy activity."
"An unjustified and unethical imposition on a healthy activity."
- Duck!
- Expert
- Posts: 9876
- Joined: Tue May 21, 2013 8:21 pm
- Location: On The Tools
Re: Bloody Puncture...question
Postby Duck! » Fri Aug 09, 2013 10:23 pm
Depends really how big the hole in the inner surface of the tyre is. If the hole in the tube is only a "pinhole", then it's likely the exit hole in the casing isn't much bigger, in which case the tyre will be fine to keep using. It's only if the hole is big enough to allow the tube to bulge through that you need to worry about it.
I had a thought, but it got run over as it crossed my mind.
-
- Posts: 441
- Joined: Sat Jul 13, 2013 6:18 pm
Re: Bloody Puncture...question
Postby DoubleSpeeded » Sat Aug 10, 2013 10:32 am
right, like where the tyre would start to seep out.Duck! wrote:Depends really how big the hole in the inner surface of the tyre is. If the hole in the tube is only a "pinhole", then it's likely the exit hole in the casing isn't much bigger, in which case the tyre will be fine to keep using. It's only if the hole is big enough to allow the tube to bulge through that you need to worry about it.
hmm thanks guys for replying
its always painful rear wheel tyre changes.
also, what pressures are people running for that ssort of tyre.
i think they generally recommend about 55 - 60psi... so i tend to get it to 60 at the max since its not an Off-Road Tyre...
- il padrone
- Posts: 22931
- Joined: Mon Apr 07, 2008 11:57 pm
- Location: Heading for home.
Re: Bloody Puncture...question
Postby il padrone » Sat Aug 10, 2013 11:22 am
Frank Berto recommends having a 15% tyre drop (under the rider's weight). Not an easy thing to measure, however he has come up with a graph that shows the relevant tyre pressures to give a 15% drop, for different tyre widths and different wheel loads (note: the wheel load is for just one wheel ie. your weight will be split 60:40 between rear and front)
A wothwhile article on tyre pressures and riding is this one by Jan Heine
A wothwhile article on tyre pressures and riding is this one by Jan Heine
As a side effect, the suspension loss tests confirmed once again that higher pressures don’t make the bike faster even on very smooth pavement. And this time, we tested with a power meter instead of a roll-down test. So we had confirmed the results with two different methodologies.
Mandatory helmet law?
"An unjustified and unethical imposition on a healthy activity."
"An unjustified and unethical imposition on a healthy activity."
-
- Posts: 441
- Joined: Sat Jul 13, 2013 6:18 pm
Re: Bloody Puncture...question
Postby DoubleSpeeded » Sun Aug 11, 2013 9:42 am
il padrone wrote:Frank Berto recommends having a 15% tyre drop (under the rider's weight). Not an easy thing to measure, however he has come up with a graph that shows the relevant tyre pressures to give a 15% drop, for different tyre widths and different wheel loads (note: the wheel load is for just one wheel ie. your weight will be split 60:40 between rear and front)
A wothwhile article on tyre pressures and riding is this one by Jan Heine
As a side effect, the suspension loss tests confirmed once again that higher pressures don’t make the bike faster even on very smooth pavement. And this time, we tested with a power meter instead of a roll-down test. So we had confirmed the results with two different methodologies.
hmmm
im about 82KG
and the tyre.. ive forgotten how much mm is the thickness
its definately thicker than 37mm...
not on the chart?
- FuzzyDropbear
- Posts: 330
- Joined: Wed Aug 15, 2012 7:55 pm
- Location: Ballarat, VIC
Re: Bloody Puncture...question
Postby FuzzyDropbear » Tue Aug 13, 2013 9:49 am
Not sure if this helps, I run between 45 and 55 psi on my City Contacts. 45 when I'm riding through the bush on the way home on Friday and then pumped back up to 50-55 on the weekend for the usual commute on the black stuff. I'm approx 85kg or so.
Bugger to hear about your puncture, I had one of those in mine about 30km after I put them on. Now they've gone over 4,300km and still going strong, no need to buy another
Cheers.
Bugger to hear about your puncture, I had one of those in mine about 30km after I put them on. Now they've gone over 4,300km and still going strong, no need to buy another
Cheers.
-
- Posts: 170
- Joined: Fri Mar 15, 2013 11:51 pm
Re: Bloody Puncture...question
Postby Bah77 » Tue Aug 13, 2013 11:47 am
I got a similar puncture, pinhole through the tyre, seemed ok, changed the tube, 1000km later and the hole had made itself bigger and repunctured the tube.
Knowing that, next time i would at least use a tyre boot, or duct tape and old tube where the glass poked through.
Knowing that, next time i would at least use a tyre boot, or duct tape and old tube where the glass poked through.
-
- Posts: 441
- Joined: Sat Jul 13, 2013 6:18 pm
Re: Bloody Puncture...question
Postby DoubleSpeeded » Tue Aug 13, 2013 12:41 pm
Well what brand tyre was it?Bah77 wrote:I got a similar puncture, pinhole through the tyre, seemed ok, changed the tube, 1000km later and the hole had made itself bigger and repunctured the tube.
Knowing that, next time i would at least use a tyre boot, or duct tape and old tube where the glass poked through.
And what type, Kevlar folding or wirebead?
-
- Posts: 170
- Joined: Fri Mar 15, 2013 11:51 pm
Re: Bloody Puncture...question
Postby Bah77 » Tue Aug 13, 2013 12:50 pm
Some giant branded one (700x23) that came with my bike, so nothing special.
- Duck!
- Expert
- Posts: 9876
- Joined: Tue May 21, 2013 8:21 pm
- Location: On The Tools
Re: Bloody Puncture...question
Postby Duck! » Tue Aug 13, 2013 1:48 pm
AKA Kenda, which range from pretty ordinary to fairly reasonable.Bah77 wrote:Some giant branded one (700x23) that came with my bike, so nothing special.
Doesn't matter, bead construction is not related to puncture resistance.DoubleSpeeded wrote:And what type, Kevlar folding or wirebead?
I had a thought, but it got run over as it crossed my mind.
- Dragster1
- Posts: 1540
- Joined: Mon Jul 08, 2013 9:46 pm
- Location: Eluding motorist
Re: Bloody Puncture...question
Postby Dragster1 » Wed Aug 14, 2013 10:28 pm
Did you mean Kevlar belts. I have wire bead tyres with Kevlar belts for puncture protection http://www.maxxis.com/Bicycle/Hybrid/Overdrive.aspxDoubleSpeeded wrote:Well what brand tyre was it?Bah77 wrote:I got a similar puncture, pinhole through the tyre, seemed ok, changed the tube, 1000km later and the hole had made itself bigger and repunctured the tube.
Knowing that, next time i would at least use a tyre boot, or duct tape and old tube where the glass poked through.
And what type, Kevlar folding or wirebead?
Jump to
- General Australian Cycling Topics
- Info / announcements
- Buying a bike / parts
- General Cycling Discussion
- The Bike Shed
- Cycling Health
- Cycling Safety and Advocacy
- Women's Cycling
- Bike & Gear Reviews
- Cycling Trade
- Stolen Bikes
- Bicycle FAQs
- The Market Place
- Member to Member Bike and Gear Sales
- Want to Buy, Group Buy, Swap
- My Bikes or Gear Elsewhere
- Serious Biking
- Audax / Randonneuring
- Retro biking
- Commuting
- MTB
- Recumbents
- Fixed Gear/ Single Speed
- Track
- Electric Bicycles
- Cyclocross and Gravel Grinding
- Dragsters / Lowriders / Cruisers
- Children's Bikes
- Cargo Bikes and Utility Cycling
- Road Racing
- Road Biking
- Training
- Time Trial
- Triathlon
- International and National Tours and Events
- Cycle Touring
- Touring Australia
- Touring Overseas
- Touring Bikes and Equipment
- Australia
- Western Australia
- New South Wales
- Queensland
- South Australia
- Victoria
- ACT
- Tasmania
- Northern Territory
- Country & Regional
Who is online
Users browsing this forum: No registered users
- All times are UTC+10:00
- Top
- Delete cookies
About the Australian Cycling Forums
The Australian Cycling Forums is a welcoming community where you can ask questions and talk about the type of bikes and cycling topics you like.
Bicycles Network Australia
Forum Information
Connect with BNA
Brought to you by Bicycles Network Australia | © 1999 - 2024 | Powered by phpBB ®
This website uses affiliate links to retail platforms including ebay, amazon, proviz and ribble.
This website uses affiliate links to retail platforms including ebay, amazon, proviz and ribble.