RC India

So I needed some sort of compressed air to clean up my work bench and balsa builds etc... I have a 250PSI compressor that I use to inflate my bike or car tire, so I figured out all I needed was some kind of reservoir... something that could handle high air pressure well..

Some internet research and the photos say how its been done.

Bill of materials:

1. Thumsup 2L bottle - Rs. 80 - I drank that entire 2L one shot for the bottle  :giggle:
2. Old useless Cycle Tyre Tube - Free, after buying a few spokes form a cycle repair shop. We just need the valve assembly to be functional
3. I.V infusion kit - Rs. 100 - Chemist - On a side note the pipe in the kit although thin, is likely silicon. Glow guys know where to use it  :thumbsup:
4. 5min epoxy - Used to seal gaps and joints

I read somewhere these bottles are good till 90 PSI, too scared of witnessing an explosion 3 ft from my ears... will have to setup a test rig and explode a few to figure out the upper limits

Nice Jugaar sirji ... :)

Thanks Punty, the design is commonly published on the Internet.. the real jugaad I had to do was finding the valve etc... nevertheless it was an interesting one...

The only thing I dont like is that its small :D, 2L compressed air just vanishes in thin air...lol

I use one such bottle in my car when I run out gas and a bottle of gas from a local shop [in the sub-urbs they sell gas for loose at tiny shacks] to get to the nearest pump. This setup of mine is since little quantity of fuel in large fuel tank will be a trouble sometimes to get there.

Now a compressed air tank, will be of something interesting and to know the development. An idea on this is, have it submerged in deeper water tank or under ground to reach higher psi levels. Good luck, subscribed!

Can't we probably use like 5-7 bottles in series / parallel -- like a battery pack. Decorated right it could give a Star Wars era appeal...lol

Sure punty, thats doable, maybe as I gulp more thumsup

PS: so another thing that I will make out of this is a backpack holi pichkari for my little on with an extended range ;)

:)

Why not you get a tubeless tyre neck instead of the tube valve.. you can do both ways [charge/discharge] in the single stem. reinforcement of the shell is also possible with various ways, not to mention those to you, isn't it!

Oh yes, tubeless tyre, i worked with what I could lay my hands on :D

Thanks for the compliments. Now i can see myself doing a lot thing with this, like assisting a continous fuel supply in a glow tank :D

sir, I dunno whether am resurrecting an old thread or not, but can't help myself.
I did some tests with cold drink bottled last year while working on a water rocket powered glider for a competition at IITK, which I think can save you some trouble.
I took 2L bottles of various brands and tested them for max pressure, setup was almost identical except the fact that I used a bicycle pump. Here is the data:-

2L Coca Cola bottle - 112 PSI, cap blew off, bottle intact
2L Pepsi bottle - 97 PSI
1.5L Slice bottle - 118 PSI, cap held till the end bottle gave up
2L Merinda/Fanta bottle - ~80PSI
2L Thumbsup bottle - ~100 PSI
2L Coke again with cap reenforced - 116 PSI

Happy to help
Bilal