pinny Posted April 22, 2009 Share Posted April 22, 2009 as the title says im looking at converting a lorry air tank into a tyre bead reseating tank i know i can buy the proper tank has any one made one the only thing ill have to buy is the 2 inch valve any views appreciated,chris. Quote Link to comment Share on other sites More sharing options...
landmannnn Posted April 22, 2009 Share Posted April 22, 2009 Since they cost £150+ surely there must be more to it than a tank and a couple of valves. Quote Link to comment Share on other sites More sharing options...
steve_d Posted April 22, 2009 Share Posted April 22, 2009 Since they cost £150+ surely there must be more to it than a tank and a couple of valves. Yes, it's called a certificate. Steve Quote Link to comment Share on other sites More sharing options...
jacks906 Posted April 23, 2009 Share Posted April 23, 2009 i'm sure they hold something like 200psi then you just open the valve an it blows down a tube an into the tire to blow it onto the rim i'd buy one if the pressure was right dave Quote Link to comment Share on other sites More sharing options...
freeagent Posted April 23, 2009 Share Posted April 23, 2009 not a lot too them except a charging valve, a PRV and a nozzle with a shut off valve on it.. ..and as others have said, a pressure cert to confirm it shouldn't blow up. Quote Link to comment Share on other sites More sharing options...
bobtail84 Posted April 23, 2009 Share Posted April 23, 2009 Its called a Cheetah and a tyre person will be along soon to tell you all about it. Jeff Quote Link to comment Share on other sites More sharing options...
pinny Posted April 23, 2009 Author Share Posted April 23, 2009 i used one last week after trying to reseat a tyre on a rim you can fill it to whatever your compressor will produce normally 120psi i know some tyre ftters compressors will go to 150 but a lorry air tank is tested/plated to a test pressure oviously my welding wont be but i see no problem if i get a good weld if i buy the pressure relief valve the 2inch valve and a pcl coupling for filling i figure it will cost about 35 quid if i can get the tank for nowt. chris Quote Link to comment Share on other sites More sharing options...
ciderman Posted April 23, 2009 Share Posted April 23, 2009 When I did my HGV Fitters apprentiship many years ago we were told to never heat or weld a pressure vessel ,This seriously weakens the vessel , The jobs like this were always to fit replacements or as a last resort to be repaired by a coded welder . If you want a quick blast of air to reinflate a stricken tyre and dont want to buy a Cheetah ,then use a gas or diving cylinder . Quote Link to comment Share on other sites More sharing options...
freeagent Posted April 24, 2009 Share Posted April 24, 2009 repairing a pressure vessel is fine providing; it is done by a coded welder it is re-pressure tested, and strength tested properly afterwards. As a rule i'd say leave them alone, we do weld on pressure vessels at work but all work is done by a coded welder then tested using helium- and a helium detector. if this method is good enough for her Majestys submarines, i'm sure it would be OK for other areas. Lorry tanks will be harder to work on as they are only thin metal... Quote Link to comment Share on other sites More sharing options...
Dave W Posted April 24, 2009 Share Posted April 24, 2009 One of the tool warehouse places (Northern tool or machine mart maybe ?) used to do one of these for around 40 quid, might be worth having a look around. Personally I use a ratchet strap, never failed yet but will admit it's more fiddly than being able to blow the tyre back on but I work on the principal that if I use the same technique at home as I might have to do in a field in the middle of a competition then I'm better practiced at it and will find it easier when I'm against the clock. Quote Link to comment Share on other sites More sharing options...
trekker Posted April 24, 2009 Share Posted April 24, 2009 if your feeling brave do it like these guys will only cost you a couple of quid. Quote Link to comment Share on other sites More sharing options...
landmannnn Posted April 24, 2009 Share Posted April 24, 2009 if your feeling brave do it like these guys will only cost you a couple of quid. Thats not the way to do it, you spray into the tyre then spray a trail on the ground. Lighting the trail is then much safer since you are further away.... Quote Link to comment Share on other sites More sharing options...
jacks906 Posted April 24, 2009 Share Posted April 24, 2009 or when it goes wrong or when heath and safety comes in to it or when you use too much gas dave Quote Link to comment Share on other sites More sharing options...
missingsid Posted April 25, 2009 Share Posted April 25, 2009 or when it goes wrong when you use too much gas dave I loved this one. Put far too much in then just in case go back and add some more Shame we could not see the tyre afterwards. Marc. Quote Link to comment Share on other sites More sharing options...
Disco-Ron Posted April 25, 2009 Share Posted April 25, 2009 I simply use the tyre inflator off my compressor...... not available when you're out though i guess,............... Quote Link to comment Share on other sites More sharing options...
soutie Posted April 25, 2009 Share Posted April 25, 2009 Gigglepin fitted for me a lorry air tank as a reservoir. I have used this numerous times to reseat tyres. The compressor is under the driver seat with the air lines plumbed into the air tank. It has a cut off fitted to the pump like a normal compressor to cut the compressor off when filled to a set pressure. If you want I can take photo's and post them here. I will also post up what pressure the compressor is set to to cut out at. Quote Link to comment Share on other sites More sharing options...
jacks906 Posted April 25, 2009 Share Posted April 25, 2009 I loved this one. Put far too much in then just in case go back and add some more Shame we could not see the tyre afterwards. Marc. dont think they knew were it went either i'm sticking to foot pump an soap to reseat tires (fairy liquid works best) not valve in tire an just keep pumping, altho you need to have a sit down after it works dave Quote Link to comment Share on other sites More sharing options...
landmannnn Posted April 25, 2009 Share Posted April 25, 2009 If my memory serves me correctly, don't CO2 fire extinguishers have a schrader valve? A google search - yes, many do. Could it be as simple as flattening the trumpet, charging it with compressed air and using it as it comes? Quote Link to comment Share on other sites More sharing options...
pinny Posted April 25, 2009 Author Share Posted April 25, 2009 If my memory serves me correctly, don't CO2 fire extinguishers have a schrader valve? A google search - yes, many do. Could it be as simple as flattening the trumpet, charging it with compressed air and using it as it comes? i can see where your coming from and this has crossed my mind but i dont think you could get the volume of air through the half inch tube unless you could charge the cylinder to 3000 psi but ive thought of using a 9 litre foam extingiusher as a tank mounting a 2 inch valve on the side chris Quote Link to comment Share on other sites More sharing options...
discomikey Posted April 25, 2009 Share Posted April 25, 2009 farmer down the road from us, who does lorrying aswell has made one all it consisted of was an old propane tank, cut and shut (be careful with that ) and a couple of valves, he puts air in until the compressor srtuggles, probably 230psiish ? and open the valve into the tyre, which is an air tap welded to a tube that hasbeen flattened at the end. I borrowed this to put one of my insa turbos onto its rim, as it was the last one and wouldnt go on, its very effective, even if it sometimes has to be aided withsilage wrap to create a better bead seal mikey Quote Link to comment Share on other sites More sharing options...
pinny Posted April 26, 2009 Author Share Posted April 26, 2009 old propane tank i thought of that but after a previous experience that idea is still scary im now looking at a 9 litre fire extinguisher there is a fire extinguisher dealer near me im going to see what thay have,chris Quote Link to comment Share on other sites More sharing options...
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