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Home Made Air Tank?

Posted: Thu Apr 21, 2005 11:17 pm
by alien
Will search shortly, bust first i need to know... will a 4.5kg LPG tank be a perfect compressed air tank? and if so, how much PSI are they generally rated to? google seems to tell me the release valve is about 250-300psi?

If this is the case - technically, before a trip, if i pump up the lpg to 220psi, i should have enough air to fully pump up all my tyres to get back on the road? =)

Just a thought... but the PSI rating seems to be the most worrying part. would hate it to heat up and go boom in the back of the zuk! 200 odd psi to a 4.5kg tank is a LOT of pressure to be coming at the back of my skull!

Posted: Fri Apr 22, 2005 12:49 am
by alien
found the answer on the side of a bottle! 3.3Mpa. This translates to about 369psi! Hence running 200psi in an expired tank will likely be pretty safe, as its only 2/3 the capacity.

correct?

Posted: Fri Apr 22, 2005 9:10 am
by mtzook
found out today that some guys over here are using scuba tanks. A few thousand PSI, and not as big as a propane tank....

Try filling some tires up with that!!

Posted: Fri Apr 22, 2005 10:05 am
by HRZOOK
I have home made tank

100 x 150mm RHS welded ends and a quarter inch fitting

Works a treat

Posted: Fri Apr 22, 2005 10:20 am
by droopypete

Posted: Fri Apr 22, 2005 11:33 am
by sierrajim
fire extinguisher bottles also work.

Posted: Fri Apr 22, 2005 3:52 pm
by DeWsE
This should be in general tech, not zook related

Also search, as this topic has been discussed in depth in general tech.

Hope this helps

Cheers

Posted: Fri Apr 22, 2005 4:13 pm
by nicbeer
Thought I would add zook tech to this.

Where have people mounted their airtanks? Underneath the pass seat? chassis on in the rear area.

cheers

Posted: Fri Apr 22, 2005 4:23 pm
by alien
another option which appeals to many is converting the roll cage to an air tank - although probably a scary option should it actually roll and crush the tube (BOOM!)

Best mounting spot i reckon is outside the zuk, probably on the rear end.

Posted: Fri Apr 22, 2005 4:28 pm
by HRZOOK
nicbeer wrote:Thought I would add zook tech to this.

Where have people mounted their airtanks? Underneath the pass seat?


Yep mine is under passenger floor

Posted: Fri Apr 22, 2005 4:45 pm
by DeWsE
alien wrote:another option which appeals to many is converting the roll cage to an air tank - although probably a scary option should it actually roll and crush the tube (BOOM!)

Best mounting spot i reckon is outside the zuk, probably on the rear end.


Also condensed air also creates moisture, so if it like most cages it is built from mild steel, it will rust internally. This happens quite quickly! Just use a air/water separator on the end of an air hose, and you will see just how much is produced.

Again please, search as you going over stuff that has great tech available.