HELP !!!!!!

gb155

Took the Hybrid out yesterday to work and got a puncture in the rear (Brand new bike), changed the tube and all was ok, within half a mile this morning got a puncture in the front, Changed the tube, checked the tyre and all was clear, Got another puncture in the front within 15 yards.

So my question is have I just been unlucky (after 600 miles without one on the MTB) or am I too heavy for 700c wheels ?

Have I made a huge mistake buying a hybrid ?

Thanks

greg66_tri_v2.0

gb155 wrote:

Changed the tube, checked the tyre and all was clear, Got another puncture in the front within 15 yards.

At a guess, either (a) the thing causing the puncture was still in the tyre, or (b) you were unlucky.

There are loads of guys in the US who are 220lbs and upwards riding CF road bikes on 700x23c tyres. They're fine; you're fine.

I had a puncture this morning. The ground here is damp. Damp is bad: the moisture acts as a glue and helps the tyre pick up pieces of grit that it would otherwise pass over. Sooner or later sharp piece = psssssssssssssssssssst!

Littigator

Hello Mate

Not sure about the weight issue. Did they properly go pop or just fssssssss down?

One thing is how good are you at changing tyres? If you have previously been changing only MTB wide tyres and tubes you have to get used to narrow tyres being much more prone to pinchflats.

These can occur when you push the bead of the tyre inside the rim of the wheel and the inner tube gets caught in between. You then inflate the tyre ok but very quickly the tube is cut through by the rim and the wheel goes flat.

Headhuunter

Sounds like you didn't check the tyre properly before reinflating the front. Before putting the new tube/repaired tube in and everything back together, check the outside of the tyre for the cause of the puncture and feel round the inside of the tyre for anything sticking through.

It's worth doing this VERY carefully, it just saves you having to take everything apart again. Sometimes punctures are caused by tiny flecks of glass which are not obvious until you go over the tyre really slowly.

Headhuunter

Also make sure the tyres are well inflated and you're not bouncing up and down on the rims when you hit a pothole

Feltup

http://www.bikeradar.com/forums/viewtopic.php?t=12597135&highlight=punctures

This thread gave good advice too. I think the replies above are repeated in it to some extent though.

cullen_bay

maybe its the rim, sometimes a new bike has a sharp bit on the rin, or with a spoke, remember marc beaumonts round the world series, he kept getting punctures, all down to the rim/spoke

gb155

Thanks for the replys, I will try and cover everything.

As I was so close to home I came back to make sure I I did it properly, Using my track pump I put 80psi into it, I have had my fill of punctures before so spent time checking the rim tape, and going over the Tyre 3 times, Pulling a small glass shard out,

Greg, Thanks for reassuring me about the weight issue.

Litt it was a fssssssss down