Fire Extinguisher tyre pump?

[Boerklong]

As long as we leave words like "isis", "fbi" and "president" out of this thread I dont think the authoritys will see this as bomb building 101

[Cois]

Yeah right

Okay... But I think I will never go past 4 bar in anycase.  It is just to get a burst of air. And the pump that I have can't do that...

[popcorn_skollie]

floor pump R300

1kg extingsher R180-Makro

fittings ,plumbing tape , valves exct.  R300

 

Max 780 ......that way less than most compressors  and you probably have everything exept the extingsher already

 

Here's one for R660. Free delivery too.

http://media3.takealot.com/covers_tsins/36925042/36925042-zoom.jpeg?1426600859

I already have a compressor so I don't bother with such experiments. 

Quite frankly I'm not competent enough to mess about with such things.

I'll probably get carried away and break something. Igor! The Switch!

[PhilipV]

Here's one for R660. Free delivery too.

http://media3.takealot.com/covers_tsins/36925042/36925042-zoom.jpeg?1426600859

I already have a compressor so I don't bother with such experiments.

Quite frankly I'm not competent enough to mess about with such things.

I'll probably get carried away and break something. Igor! The Switch!

You won't get a tubeless tyre to seat with that kompressortjie. It's output volume is too low. Been there, tried that.

[Sepia]

floor pump R300

1kg extingsher R180-Makro

fittings ,plumbing tape , valves exct.  R300

 

Max 780 ......that way less than most compressors  and you probably have everything exept the extingsher already

With the Extinguisher you can seat a tubeless tyre, many times over. 

Max 10bar which is a tenth of the capacity of a cylinder once tested so I am told? Never need it that high.

 

Extinguisher - Free

Regulator - Free

Pressure test - R85

Fittings, certification testing etc- R300

 

Able to pump car tyres, all bicycles, HP air cleaner, have compressor at home to top up,or use the garage, it is portable, spray painting?

Put a decent gauge on it and away you go.

[Sepia]

excuse the ignorance < what exactly does the regulator do?

Basically allows you to use a much lower pressure than the supplied higher pressure.  It "regulates" the pressure constantly to a pre settable pressure (scuba).  Like a transformer from 220v down to 12v.

 

If I understand it correctly. 

[Paul Ruinaard]

excuse the ignorance < what exactly does the regulator do?

Umm....

 

Stops you from applying 200 PSI to a rim and tyre and blowing it to bits and yourself in the process.

 

Google some pictures and videos on Youtube of truck tyres letting go and you will get the idea. Many people have been blown through the roof of buildings like this

 

As it says it regulates the pressure.

 

I think that if you don't understand this you may be showing a bit of a lack of understanding of how dangerous compressed air is and maybe you should stick to other DIY projects. You could potentially disappear in a bang..

 

Or on second thoughts could i suggest that you video your tests as you will likely end up going viral on Youtube...

[Grebel]

A regulator regulates the supplied pressure. IOW if you pressurize your tank to 10Bar and set the regulator to 2Bar, and line pressure after the regulator will be 2Bar.

 

Just bear in mind that you are looking for volume of air (or more specifically a certain volume of air in a certain amount of time) to seat a tyre and not necessarily just pressure...

[Sepia]

 

Or on second thoughts could i suggest that you video your tests as you will likely end up going viral on

Youtube...

 

Will do.  I will start with the pressure test and certification.  That should be interesting enough.............should keep them glued to their seats.

[Paul Ruinaard]

A regulator regulates the supplied pressure. IOW if you pressurize your tank to 10Bar and set the regulator to 2Bar, and line pressure after the regulator will be 2Bar.

 

Just bear in mind that you are looking for volume of air (or more specifically a certain volume of air in a certain amount of time) to seat a tyre and not necessarily just pressure...

What you need is in the old terms CFM or cubic feet per minute of delivery. That is the key, Not only pressure.

 

That is why you use a reservoir like a tank as a store of air. 

 

If you dont have enough CFM you will never pop a tyre on to a rim.

 

THis thread truly scares me.

[Paul Ruinaard]

Your funeral:

 

 

[Grebel]

 

If you dont have enough CFM you will never pop a tyre on to a rim.

 

 

^^ This

[Grebel]

Thank you this was the answer I was looking for, would it be necessary when working with 80psi ?

 

I wil be getting a 2L air tank monday then get the fittings for filling and relesing the ait just need to know if you think I should add a regulator aswell

 

80Psi is 5,5Bar

 

There is no right answer.... Depends on your container, how proficient you are around compressed air, how you set it up etc...

 

If you for example, pressurize said 2lt container up to 80Psi using a plumbed schraeder valve and have a 1/2" ball valve connected to a flexible hose that connects to the tyre, then you could release a burst of air that would seat the tyre. Worst case scenario is that you pop the tyre over the bead or even worse, rupture the side wall (But I doubt that will happen with 5 Bar. I could be wrong though...)

 

If you use a dive cylinder that is pressurized to 200Bar then I would highly recommend using a regulator!!!

 

DISCLAIMER: Compressed air is dangerous!!!! If there is any doubt in your mind or you don't understand how something works, rather walk away and leave it to someone else. Any pressurized container is effectively a bomb that if it ruptures, has the potential to kill or maim you or those around you

[Paul Ruinaard]

Thank you this was the answer I was looking for, would it be necessary when working with 80psi ?

 

I wil be getting a 2L air tank monday then get the fittings for filling and relesing the ait just need to know if you think I should add a regulator aswell

2 litres is a small volume. And given that tyres are inflated to 80 to 100 PSI(road) and upwards your project will likely not work. Even and MTB tyre is at 20 to 30.

 

You need something a lot larger than 2 litres and at pressures above that.  You need to have a bigger reservoir effectively to achieve the air blast that you need to pop a tyre on.

 

Honestly take your  money to a shop and buy the Bontrager pump that has it all built in...

 

Get a tank first - regulators are later.

[Paul Ruinaard]

80Psi is 5,5Bar

 

There is no right answer.... Depends on your container, how proficient you are around compressed air, how you set it up etc...

 

If you for example, pressurize said 2lt container up to 80Psi using a plumbed schraeder valve and have a 1/2" ball valve connected to a flexible hose that connects to the tyre, then you could release a burst of air that would seat the tyre. Worst case scenario is that you pop the tyre over the bead or even worse, rupture the side wall (But I doubt that will happen with 5 Bar. I could be wrong though...)

 

If you use a dive cylinder that is pressurized to 200Bar then I would highly recommend using a regulator!!!

 

DISCLAIMER: Compressed air is dangerous!!!! If there is any doubt in your mind or you don't understand how something works, rather walk away and leave it to someone else. Any pressurized container is effectively a bomb that if it ruptures, has the potential to kill or maim you or those around you

What the man says.

 

You are talking about pressures in excess of 200 pounds per square inch. THink about your 200 pound mate sitting on your chest to get an idea of how high that is.

[Eddy Gordo]

One would definately need a regulator of sorts to make it work safely. Compressed air is no joke.

 

I will never forget the day my friend rocked up at tokai and realised he needed to ad air in his tyre and pulled one of those tiny compressors out of his van. The thing was running for 2 minutes and didnt inflate his wheel halfway. I just laughed, went to my boot and pulled out a 95L/min compressor and he inflated his wheel in 10 seconds.

 

I now have a 150l/m one, works a treat.