Pot holes and pinch flats - why me?

Talk about your races - Time Trials, Road Races or Cyclocross.
User avatar
Herbsman
Posts: 1940
Joined: Mon May 03, 2010 18:31 pm

Pot holes and pinch flats - why me?

Postby Herbsman » Sun May 27, 2012 14:22 pm

Today has been the second race during which, along with any hope of winning, my rear tyre has rapidly deflated. This happened immediately after riding over a pot hole. Everyone else in front of me rode over the same hole. Nobody else got a flat. Why me?

The first time, the tyre was only a couple of weeks old. The rim tape is fine and the rim is new, with no dodgy rough bits sticking out. Tyre pressure was 110psi the first time if I remember correctly, and about 115psi this time.

I have had at least one similar pinch flat whilst out training too, on different set of wheels / tyres. Same thing - pot hole that other people rode over & didn't get a puncture, while I did.

Obviously I don't expect anyone to be able to explain why it seems to only happen to me, but answer me this. Am I running my tyres at the right pressure? I'm 75kg and saw a Schwalbe chart that recommended 115psi for a 75kg rider. How often should I change tyres? I've only had my racing tyres on since March. Also, what's the best way to vent my frustration without ending up in court?

User avatar
amaferanga
Posts: 6595
Joined: Sun Apr 18, 2004 16:44 pm

Re: Pot holes and pinch flats - why me?

Postby amaferanga » Sun May 27, 2012 14:26 pm

Did you have time to move your weight forward to lessen the impact? Maybe that's what everyone else did while you just crashed straight through with all your weight on the rear wheel?
More problems but still living....

User avatar
Monty Dog
Posts: 20390
Joined: Thu Dec 14, 2006 14:31 pm

Re: Pot holes and pinch flats - why me?

Postby Monty Dog » Sun May 27, 2012 18:59 pm

Ride tubs? Seen this numerous times in races where the guys riding clinchers suffer pinch punctures and those riding tubs crack on. That said, I have bust 2 carbon rims hitting potholes in races - didn't puncture though!
Make mine an Italian, with Campagnolo on the side..

Rule74Please
Posts: 306
Joined: Tue Apr 19, 2011 14:00 pm

Re: Pot holes and pinch flats - why me?

Postby Rule74Please » Mon May 28, 2012 08:19 am

115psi is too low Get them to about 140

User avatar
Herbsman
Posts: 1940
Joined: Mon May 03, 2010 18:31 pm

Re: Pot holes and pinch flats - why me?

Postby Herbsman » Mon May 28, 2012 09:12 am

amaferanga wrote:Did you have time to move your weight forward to lessen the impact? Maybe that's what everyone else did while you just crashed straight through with all your weight on the rear wheel?
I think I tried to unweight my back wheel a bit but it was too late

User avatar
amaferanga
Posts: 6595
Joined: Sun Apr 18, 2004 16:44 pm

Re: Pot holes and pinch flats - why me?

Postby amaferanga » Mon May 28, 2012 10:51 am

Rule74Please wrote:115psi is too low Get them to about 140


:roll:
More problems but still living....

fish156
Posts: 483
Joined: Wed Dec 01, 2010 18:10 pm

Re: Pot holes and pinch flats - why me?

Postby fish156 » Mon May 28, 2012 17:34 pm

Perhaps other riders were using tubs or latex tubes? Both can be run at higher pressure, lessening the chance of a pinch puncture.

User avatar
maddog 2
Posts: 7824
Joined: Thu Jun 03, 2004 14:47 pm

Re: Pot holes and pinch flats - why me?

Postby maddog 2 » Tue May 29, 2012 09:26 am

[cough] tubeless [cough]
Facts are meaningless, you can use facts to prove anything that's remotely true! - Homer

racingcondor
Posts: 1431
Joined: Thu Jul 30, 2009 17:20 pm

Re: Pot holes and pinch flats - why me?

Postby racingcondor » Thu May 31, 2012 13:30 pm

Rule74Please wrote:115psi is too low Get them to about 140


Probably not a great idea to inflate them beyond the rims limit...

I'd have said that at 75kg you're probably still overinflating if anything. Try 90 front and 100 rear, see how that goes (or even 90/90 with a 25mm tyre). I suspect the big reason though is that you still had your weight on the saddle while the guy in front managed to get his weight on the pedals.

User avatar
Herbsman
Posts: 1940
Joined: Mon May 03, 2010 18:31 pm

Re: Pot holes and pinch flats - why me?

Postby Herbsman » Thu May 31, 2012 21:02 pm

racingcondor wrote:I suspect the big reason though is that you still had your weight on the saddle while the guy in front managed to get his weight on the pedals.

Yeah, you're probably right, although I can't remember if I was seated at the time

User avatar
Monty Dog
Posts: 20390
Joined: Thu Dec 14, 2006 14:31 pm

Re: Pot holes and pinch flats - why me?

Postby Monty Dog » Sun Jun 03, 2012 18:48 pm

You could try pedalling harder? ;-)
Make mine an Italian, with Campagnolo on the side..

User avatar
Herbsman
Posts: 1940
Joined: Mon May 03, 2010 18:31 pm

Re: Pot holes and pinch flats - why me?

Postby Herbsman » Mon Jun 04, 2012 00:06 am

Monty Dog wrote:You could try pedalling harder? ;-)

:lol:

User avatar
memsley89
Posts: 809
Joined: Tue Aug 31, 2010 17:26 pm

Re: Pot holes and pinch flats - why me?

Postby memsley89 » Mon Jul 02, 2012 09:36 am

Bunny Hop?
Cycling Plus ran an article with tips recently...
Racing the 2016 season with Team ASL360
............... Big thanks to our sponsors ...............
............... Kinesis UK Reflex Nutrition ..............

User avatar
springtide9
Posts: 1636
Joined: Sat May 08, 2010 23:30 pm

Re: Pot holes and pinch flats - why me?

Postby springtide9 » Mon Jul 02, 2012 13:03 pm

What width tyres are you running?

I have a pair of 23mm Conti Grand Prix Attack/Force that I bought last year for the summer and had pinch flats 2 out of 3 times (so I removed them!) Now I'm back to my 24mm GP's and I don't think I've ever had a puncture on the bike. They seem to have a little bit more volume in them to ease any impacts.

I was talking to a friend last week who has switched from 24mm to 25mm and seemed to think they rolled as quick (if not better) than the 24mm's they replaced (on our poor surfaced roads), so tempted to move to 25mm when my 24s are worn.
Simon

User avatar
Herbsman
Posts: 1940
Joined: Mon May 03, 2010 18:31 pm

Re: Pot holes and pinch flats - why me?

Postby Herbsman » Mon Jul 02, 2012 17:52 pm

I went over a bad pot hole on Thurs but my ars* was barely touching the saddle and all my limbs were relaxed, so I didn't get a flat.

However it wasn't a sharp pothole like the others, so maybe wouldn't have caused a puncture anyway.

I might switch to 25s and see what happens.

User avatar
MacLeod113
Posts: 502
Joined: Thu Feb 03, 2011 15:54 pm

Re: Pot holes and pinch flats - why me?

Postby MacLeod113 » Mon Jul 09, 2012 13:03 pm

Have you reported the pothole to the council/fill that hole so they can repair it?
Trek 2.1 2013
Willier GTR 2014

User avatar
Herbsman
Posts: 1940
Joined: Mon May 03, 2010 18:31 pm

Re: Pot holes and pinch flats - why me?

Postby Herbsman » Wed Jul 11, 2012 07:18 am

MacLeod113 wrote:Have you reported the pothole to the council/fill that hole so they can repair it?

:D


Return to “Amateur Race”

Who is online

Users browsing this forum: Google [Bot] and 1 guest