custom made pressure vessel - aluminium...
Posted 02 November 2007 - 11:06 AM
Im trying to find someone who can build me a custome made air tank for my 4x4. I want about 15 litres under the car.
It needs to be able to withstand 180 PSI.
I'm going to use two PX07 12V compressors and the tank will be used for airing up tyres, and for use with on board water storage for pressure cleaning the car and will be regulated down to 100 PSI to opperate either ARB or TJM air lockers (im leaning towards the TJM unit at this stage - though I dont like the wait ) I'll only bew going a front locker to start with as the rear has LSD which is pretty good - especially when shimmed tight which mine is (makes round about interesting in the wet though).
Natually it will be plumbed up with check valves and pressure switches and water seperators etc. I may end up just using smaller off the shelf tanks - does any one know what effect using multiple smaller tanks has - ie will 3 x 3 litre tanks be the same as one 9 litre tank?
Posted 02 November 2007 - 01:47 PM
The Australian Standard is AS1210 (AS1200 for Pressure Equipment, 1210 is specific for vessels). So long as its not fired, or a reactor, it will fall under this standard.
Posted 02 November 2007 - 01:52 PM
Posted 02 November 2007 - 02:22 PM
Any boiler maker could make you one surely.............
Posted 02 November 2007 - 02:51 PM
Plus I reacon 8mm mild steel plate, which is about the lightest we deal with, might be a little heavy
We have made pressure vessels before - but not very often - something that we leave more for shearform and one of our drafties "whispers".
Might still give it a go. Ive got a freind who has a tig and theres a metal spinner a few streets away - might find out if they deal with aluminium.
You wouldnt happen to have a copy of the code any where would you Matt?
Mangrovejack - Personally I dont like the idea of an old fire extinguisher bottle - something about it has just never sat right with me. Corrossion and what not...
Plus im not going to use an endless system. I was going to - I even have a spare york compressor with the mods - but I cent really fir it under the bonnet anywhere with enough belt wrap. And I have a Sanden compressor as well - no mods on that one - but they are easy enough to do. But after receint investigations I dont think i want an "endless" type system - too many failures. Without the freon as a lubricant they seem to get extreemly hot and do rings and seize randomly - not something you want when you've just air'd down to 16psi with 33" claws on and miles to get to the nearest servo...
The PX07 aka the BOSS Grande as sold by Steve Hobbs and Boss Air suspension is good for upto 200 PSI and will restart with over 180 PSI load is fan cooled 750watt motor and flows upto 3.5 CFM with no load.
The endless needs to be doing about 2200RPM to flow 7CFM @ 150-200PSI. So I presonally think 2 of the PX07 compressors should flow a similar amount at those type pressures and far more than the endless flows @ idle and its a compressor that is made to do the task being asked of it...
Posted 02 November 2007 - 05:07 PM
I recall him telling me about a bloke who made his XR fuel tank for him?
Posted 02 November 2007 - 08:21 PM
marks adapters do evrything dont they? NOW DO IT!!!
Posted 02 November 2007 - 09:55 PM
I'm looking at the Marks 4wd adaptors portal kit - but you cant have CTIS (central tyre inflation system) from the hub with them - so Im looking at unimog hubs which can. Either way portals and crawlers on diesel gas should make it a pretty unstoppable machine on or off the road and should make it a very capable tourer. Not sure if I should piss the 4.2T off and stick a 6.5TD chev in yet or not...
Just gotta wait till the lease is up
In the state they put the unimog and volvo hubs in jeeps all the time. I think there may even be someone who builds portals for jeeps with reduction gearing in the hubs
Edited by Komodo, 02 November 2007 - 10:15 PM.
Posted 02 November 2007 - 11:48 PM
Have you tried Brown Davis Automotive Kirk? .... They fabricate all sorts of custom 4WD stuff.
Posted 03 November 2007 - 07:17 AM
best bet is an old extinguisher, or similar. 1500kPa is a bit (unless that's the test pressure?) - most ppl use only about 700-800kPa.
Posted 03 November 2007 - 10:51 AM
What about a call to a mob that do automotive gas conversions, maybe they have an off the shelf tank available or a custom job?
Posted 08 November 2007 - 10:27 AM
Im after a tank of about 15Ltrs However the 15L tanks dont fit dimensionally BUT I have 2 spaces of identical shap and size that are within 450mm of one another.
So the question is if i use two tanks of 8L capacity joined via braided air hose - will this equate to the same as one 16L tank? this SHOULD hopefully enable me to inflate a tyre before the compressor kicks in. And with two PX-07 compressors (the same type of compressor used in BOSS Air ride suspension systems) the tanks "should" be full and the compressors cut out before I get to the next tyre to inflate.
And I think im going 35's now
Posted 08 November 2007 - 10:56 AM
Posted 08 November 2007 - 12:14 PM
Posted 08 November 2007 - 01:12 PM