Hey everyone, I hope this is the right sub for this.
I am new to biking, I haven't ride for decades (since I was a child).
I got a Carraro Daytona 920, 2 days ago. I rode it 3-4 times, each one very brief 10-15 mins just 4-5 km rides. Mostly in pavement but in briefly on rough terrain.
Yesterday, after around 7 minutes, I realized it was feeling wrong, and after a break I realized the back tire was completely flat. I checked throughly but there is no puncture visible anywhere. After pumping air again, it took about 2-3 minutes for it to deflate completely again.
My biggest question is, am I too heavy for the bike, specially on rough terrain? I am weighing at 120 Kg and 180 Meters tall. I feel like the tire just gave up on my weight.
The assembly was done by the stores mechanics.
Here are some pictures of the back tire and the front for reference.
Thanks for any input!
by MatrimVII
7 Comments
Most likely a thorn or bit of glass or something went into the tyre, and the came straight out again after puncturing it.
If you can’t see the hole in the inner tube you can use a bucket of water (or full sink) to look for bubbles.
You’re definitely the upper end of what bikes are made for, but in this case it’s probably not a problem.
I’d say there is a small puncture in the tube, and it’s important to know that this isn’t always immediately obvious from the outside. You’ll need to remove the tube and check it that way, sometimes you need to even put some soap on it to see where the bubbles are coming from.
There’s plenty of videos around showing you how to change a tube, otherwise every bike shop there is will be able to help
It couls have a small punctute that you cant see
The valve itself is leaking or more likely, there is a puncture. That’s the only way the air escapes.
If you cant find a hole in the tube using a bucket of water and checking for bubbles then the next possibility is a loose or badly made valve. Also thoroughly inspect the rim of the wheel for any barbs or badly seated rim tape that could cause a puncture. Failing all that I would just put a new tube in, new bikes often come with cheap tubes anyway as the customer cant see them.
You can not see a puncture. Get tire and tube off. Inflate tube, but in water to see where the hole is (bubbles comming out). Now look at the tyre (mark where the valve is before removing it), at same distance from valve, and you might find the cause on the inside of the tyre.
Yesterday I had a puncture as well, in the forest, could not find the cause of puncture (or hole, no water bucket to test in). Replacement tube punctured in minutes as well. Outside the forest I inverted the tyre (inside out, I have folding tyres, thus easy), and in the sun I could see a tiny white spot, it was the sharp end of a flint. Inverting the tyre pushed it enough in that I could just see it. Nothing to see on the outside.
Sometimes you can hear/feel the hole in the tube if you inflate it a bit.
Right sub. Post isn’t entirely clear; have you removed the tyre and found the puncture? This is the next port of call if you wish to repair it yourself. A bucket of water can aid in spotting the leak, then either patch or replace the tube. Lots of good tutorials on YouTube.
As for the weight question, you’re probably on the upper limit for this bike if you’re heading for rougher terrain. Setting correct tyre pressures will be a big step in the right direction if you aren’t doing this currently.