I've heard that a deodorant or similar vessel can be transfomed into an air vessle for Pneumatic retract system.
Does anybody know how to do it? how do you get the original tube out? how do you solder the new fitting?
thanx
Ofer

Why don’t you use a Coke bottle and wrap it with tape?

Bill

Go to your local hobby dealer, plunk down 5 bucks and get a safe, reliable and suitable air tank.

Or since you're over in that part of the world, you may have to order one, (dare I say it) "over the Internet"...

Hey y'all, watch this!

DON'T BE STUPID!!! Use a vessel rated for the pressure and application. A commercially-made air tank isn't that expensive. Any vessel rated to hold air will have a coated or galvanized interior. This prevents the moisture in the air from rusting it out from the inside, eventually causing a failure. It will also be manufactured to more exacting standards than your average FDS can. In other words, IT WILL BE SAFE!!!

BillS, that's NOT a good idea. Pop bottles are not made to withstand the pressure, I don't care how much tape you wrap around them. They may have weak or thin spots that will blow out. An expolding pop bottle with 100 PSI in it will DESTROY the plane it's mounted in. I hope none of the pieces hit anyone. I hope the pilot is not bent over the plane when it happens. What's next, BillS, baling wire to hold the wings on?

People, Jeez............you spend hundreds, if not thousands, of dollars on a plane and want to penny-pinch the most important things. Things that may cost you the plane or your health.

Gasoline in pop bottles from pe, and now pressurized air in a Right Guard can...Gawd, I'm glad some of you guys don't fly ay MY clubs!!! Y'all keep this up and we'll find out just how good the AMA insurance really is.

Dr.1

I sort of like using a Coke bottle as a fuel tank. As a test you should fill a coke bottle half full of water and throw it against a brick wall. Throw it harder the second and third time.

Bill

IT is not for feul, but for air.
and it is true - we dont have these tanks here in israel (eben though all regular equipment you can find easily)
ordering from Intenet is OK but i try to concetrate several items so the delivery does not cost more than the itmes themselves...
about the "risks" -what is the point of this hobby if you dont do some things by yourself ah?
i need to know that i've build some of the gear in my model with my own hands.

about the "risks" -what is the point of this hobby if you dont do some things by yourself ah?
i need to know that i've build some of the gear in my model with my own hands.

OK, you go ahead, ofer. Build your air tank from whatever you find over there. Pop bottles, deoderant cans, shell casings, or soft drink cups.

There are always "acceptable or unavoidable" risks. And then there are STUPID risks. Let's all hope you continue to have hands to "build some of the gear in my model".

I'm shut.

Dr.1

....OK, Fellas....lets play nice....

The Robart air tanks only cost from ten to fifteen dollars.

http://www.robart.com/air_systems/airtanks.aspx

FBD.

All good high-pressure designs utilize a pop off valve.

Bill

Gasoline in a Coke bottle gives significant meaning to “Crash and Burn.�

Bill

that has to one of the most stupid things I have ever read:

I don't care if its a joke or not there are people that will read that and think hey what a good idea (NOT!!!) what if the third time that bottle gets a slight puncture?

my 2 cents

Some also might not approve of the two 4oz oval glue bottles that were plumbed this morning for glow fuel.

Bill