Someone please help me out in understanding the term. I have always thought of pinch flats as what happens when a tube is improperly seated in the tire ans gets "pinched" between the tire and rim wall.
In this group lots of folks seem to refer to pinch flats as what happens with "too small" tires for the load being carried. Is the idea that the load essentially flattens the tire and thus "pinches" the tube between the tire and rim body?
If this is so I have never seen that happen. Is it really a matter of load or insufficient inflation?
"gds" <[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
Someone please help me out in understanding the term. I have always thought of pinch flats as what happens when a tube is improperly seated in the tire ans gets "pinched" between the tire and rim wall.
This usually results in a blowout. I've never thought of this as a "pinch flat."
Quoted message said:
In this group lots of folks seem to refer to pinch flats as what happens with "too small" tires for the load being carried. Is the idea that the load essentially flattens the tire and thus "pinches" the tube between the tire and rim body?
Yes. aka a "snakebite" since it frequently causes two holes, one on each side.
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If this is so I have never seen that happen. Is it really a matter of load or insufficient inflation?
Yes, either. The impact (such as bouncing up over a curb or hitting a big enough rock) can also dent your rim if it's sufficiently violent.
"Rich Clark" clip) I've never thought of this as a "pinch flat." (clip) ^^^^^^^^^^^^^^^^ There is a little bit of overlap of teminology. The type of flat caused by trapping the tube in mounting is commonly called "pinching the tube." This can be between the bead and the rim, or between the tire iron and the rim or bead.
There is a little bit of overlap of terminology. The type of flat caused by trapping the tube in mounting is commonly called "pinching the tube." This can be between the bead and the rim, or between the tire iron and the rim or bead.
The difference is that this is not a flat but rather a tire patching error that doesn't occur while riding. Flat tires are those events that occur from riding the bicycle (or malicious activity). If you damage the inner tube while remounting the tire then you discover it immediately when you try to inflate the tire.
The pinch flat and the snake bite (double pinch) are caused by compression failures the same as when bumping one's head on a flat solid object, like a low concrete ceiling, to causes bleeding.
Someone please help me out in understanding the term. I have always thought of pinch flats as what happens when a tube is improperly seated in the tire ans gets "pinched" between the tire and rim wall.
In this group lots of folks seem to refer to pinch flats as what happens with "too small" tires for the load being carried. Is the idea that the load essentially flattens the tire and thus "pinches" the tube between the tire and rim body?
If this is so I have never seen that happen. Is it really a matter of load or insufficient inflation?
Thanks!
I think it is something like that when you hit a rock or a decent pothole the tire can't hold its shape and the tube gets pinched between the rim and the obstacle. Bill
The couple of pinch flats I had were from a rookie mistake: not checking my air pressure. Walking home 3 miles taught me the wisdom of topping off the tires before I roll out the door. It is pinching the tire and tube between the street surface and the rim.
Someone please help me out in understanding the term. I have always thought of pinch flats as what happens when a tube is improperly seated in the tire and gets "pinched" between the tire and rim wall.
Quoted message said:
Quoted message said:
In this group lots of folks seem to refer to pinch flats as what happens with "too small" tires for the load being carried. Is the idea that the load essentially flattens the tire and thus "pinches" the tube between the tire and rim body?
Quoted message said:
Quoted message said:
If this is so I have never seen that happen. Is it really a matter of load or insufficient inflation?
Quoted message said:
I think it is something like that when you hit a rock or a decent pothole the tire can't hold its shape and the tube gets pinched between the rim and the obstacle.
You may have the picture right but the description may be misleading. The tube does not actually get pinched between rim and obstacle. It is pinched between the side walls of the tire, the rim being outside of the tire bead. Its shape is like pinching your cheek.
I got a couple of really bad pinch flats in Holland, where the mortar was missing between the pavers on the bike trail, and I rode into the gap.
This reminds me... i just remembered. I dreamed last night, or this morning, that I was fixing a flat tire! I was about to take out my bike when I noticed the tire was flat. I thought, oh S***....so I set about fixing the flat. At first I wasn't sure I'd done a very good job, so i asked a friend (another cyclist who is very tech savvy) if he could take a look at it. He said I did it fine, but I just needed to inflate it a bit more. I said fine, I'd do that, and I was surprised I'd done a good job!
Sat, 08 Oct 2005 19:00:01 -0400, <[email hidden]>,
Marlene Blanshay said:
Quoted message said:
I got a couple of really bad pinch flats in Holland, where the mortar was missing between the pavers on the bike trail, and I rode into the gap.
This reminds me... i just remembered. I dreamed last night, or this morning, that I was fixing a flat tire! I was about to take out my bike when I noticed the tire was flat. I thought, oh S***....so I set about fixing the flat. At first I wasn't sure I'd done a very good job, so i asked a friend (another cyclist who is very tech savvy) if he could take a look at it. He said I did it fine, but I just needed to inflate it a bit more. I said fine, I'd do that, and I was surprised I'd done a good job!
And the best part is that you didn't even get your hands dirty! -- zk
Sat, 08 Oct 2005 19:00:01 -0400, <[email hidden]>,
Marlene Blanshay said:
Quoted message said:
I got a couple of really bad pinch flats in Holland, where the mortar was missing between the pavers on the bike trail, and I rode into the gap.
This reminds me... i just remembered. I dreamed last night, or this morning, that I was fixing a flat tire! I was about to take out my bike when I noticed the tire was flat. I thought, oh S***....so I set about fixing the flat. At first I wasn't sure I'd done a very good job, so i asked a friend (another cyclist who is very tech savvy) if he could take a look at it. He said I did it fine, but I just needed to inflate it a bit more. I said fine, I'd do that, and I was surprised I'd done a good job!
And the best part is that you didn't even get your hands dirty!
and the good thing is it happened before i left the house, rather than out on the road somewhere...
"Bill" <[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
gds said:
Someone please help me out in understanding the term. I have always thought of pinch flats as what happens when a tube is improperly seated in the tire ans gets "pinched" between the tire and rim wall.
In this group lots of folks seem to refer to pinch flats as what happens with "too small" tires for the load being carried. Is the idea that the load essentially flattens the tire and thus "pinches" the tube between the tire and rim body?
If this is so I have never seen that happen. Is it really a matter of load or insufficient inflation?
Thanks!
I think it is something like that when you hit a rock or a decent pothole the tire can't hold its shape and the tube gets pinched between the rim and the obstacle. Bill
Thanks again! I imagine that since I basically ride only road bikes and run pretty high pressure are the reasons for my lack of familiarity. But it is good to have common definitions when discussing anything!
