max pressure of a 1 L and 1.5 L cola bottle

[RaZias]

I am a noobie and I wanted to know the max pressure of a 1 L and 1.5 L coca-cola bottle.
I only know the max one of the 2 L.

[rockets-in-brighton]

RaZias:

Seems to me that the only way to know for sure is to test a couple of the bottles you are interested in. There's an excellent article on burst testing here Air Command Water Rockets, including important safety tips like always filling the bottle with water first, and covering it with a blanket or similar to prevent fragmentation damage.

Cheers
Steve
rockets-in-brighton

[U.S. Water Rockets1]

RaZias:

Seems to me that the only way to know for sure is to test a couple of the bottles you are interested in. There's an excellent article on burst testing here Air command rockets, including important safety tips like always filling the bottle with water first, and covering it with a blanket or similar to prevent fragmentation damage.

Cheers
Steve
rockets-in-brighton

If you're going to pressure test your own bottles, you should always try and be as safe as possible. People tend to show a lack of respect for air pressure explosions. A soda bottle fully pressurized has much more kinetic energy than the largest firecrackers you can buy. People tend to treat fireworks with a lot more care than they give to bottles. Don't be one of those people! Be safe!

[RaZias]

Do you know how I burst test glued bottles ?
I put the launcher inside the garage and then I close it but leaving a small space to pass the air input to the house.

The only "if" is that I can´t use water since it will wet all the garage.

I use "ear protections" since it makes a "bang".
During the test I use kevlar gloves made for "downhill mountain biking". I never know if a hose can blast (although I only put 110 psi in a 280 psi house).

I also have eyes protection.

[rockets-in-brighton]

Do you know how I burst test glued bottles ?
I put the launcher inside the garage and then I close it but leaving a small space to pass the air input to the house.

The only "if" is that I can´t use water since it will wet all the garage.

I use "ear protections" since it makes a "bang".
During the test I use kevlar gloves made for "downhill mountain biking". I never know if a hose can blast (although I only put 110 psi in a 280 psi house).

I also have eyes protection.

Ah, you forgot the crash helmet... safety first!

Sounds like you are doing all the right things. So what are your results?

[WRA2]

Do you know how I burst test glued bottles ?
I put the launcher inside the garage and then I close it but leaving a small space to pass the air input to the house.

The only "if" is that I can´t use water since it will wet all the garage.

I use "ear protections" since it makes a "bang".
During the test I use kevlar gloves made for "downhill mountain biking". I never know if a hose can blast (although I only put 110 psi in a 280 psi house).

I also have eyes protection.

You shouldn't have to worry about the hose if it is rated for 280 then it will hold that much. Ratings for hoses and pipe that is to be handled by people are required to hold 3 times the listed rating. That means that the hose was burst tested at 840PSI to earn the 280 rating. We do not recommend exceeding the listed rating though.

[Bonami]

Do you know how I burst test glued bottles ?
I put the launcher inside the garage and then I close it but leaving a small space to pass the air input to the house.

The only "if" is that I can´t use water since it will wet all the garage.

I use "ear protections" since it makes a "bang".
During the test I use kevlar gloves made for "downhill mountain biking". I never know if a hose can blast (although I only put 110 psi in a 280 psi house).

I also have eyes protection.

You shouldn't have to worry about the hose if it is rated for 280 then it will hold that much. Ratings for hoses and pipe that is to be handled by people are required to hold 3 times the listed rating. That means that the hose was burst tested at 840PSI to earn the 280 rating. We do not recommend exceeding the listed rating though.

Yeah. That kind of information could be dangerous. There's always going to be the guy out there who would see that his hose is rated for 10 bar and so he thinks inside his head that he can put 30 bar in it and then the next thing which happens is it busts up on him while he's using it and someone gets hurt. Good advice not to go past the rating!

[RaZias]

I use kevlar gloves because if I loose a finger I am in trouble since I am a physiotherapist.

There are two values for hoses. The "work pressure" and "burst pressure".

I saw a hose with work pressure of 400 bars and a burst pressure of 900 bar.
It cost 1 euro per centimeter of length, so 10 meters are 100 euros.

[Spaceman Spiff]

I use kevlar gloves because if I loose a finger I am in trouble since I am a physiotherapist.

There are two values for hoses. The "work pressure" and "burst pressure".

I saw a hose with work pressure of 400 bars and a burst pressure of 900 bar.
It cost 1 euro per centimeter of length, so 10 meters are 100 euros.

Where do you get kevlar gloves? Are they bulky and hard to work in? I use safety goggles and sometimes a face shield but I never thought of using protective gloves. Are they insulated as well? Can you use them to work with heat shrinking bottles? I think kevlar has a very high melting point.

[RaZias]

Try to check gloves for motorbikes.

The one I use are for Mountain Bike, used in a modality named "downhill".
Just search in the web for downhill gloves.

The ones I use have stopped from being produced. (they were from "Qranc")
There are brands as "661", "manitou", "specialized".

Don´t be mistaken if they are carbon reinforced in the knots of the fingers.
What is important is the reinforcement in the palm.

[RaZias]

They aren´t bulky, in fact they are quite easy to use.

They can tolarate some heat, but the glove is not 100% kevlar so some parts might start to suffer (like nylon and poliester).

[Spaceman Spiff]

They aren´t bulky, in fact they are quite easy to use.

They can tolarate some heat, but the glove is not 100% kevlar so some parts might start to suffer (like nylon and poliester).

I never would have thought to look for them in a sporting goods website. I thought they were some industrial gloves or something. I would never have thought of mountain biking gloves! Great idea!

I think I will be getting some along with a brake cable setup that I can use to remote trigger my launcher. I may look at that fancy pump that has the selectable pressure ranges too. I can save on shipping if I buy a lot at once.