- Thread starter alfapat
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We`ll call it the pipe that delivers the discharge pressure from the compressor then 
I guess its down to costings again the use of the least possible materials to try and get the job done, on some of the older ones which run at nearly half the rpm of this one they used to curl the discharge/delivery pipe around the crank pulley side of the compressor before running to the check valve to at least try and cool the air temp as well as to give more room for the motor to come up to speed. The short discharge means that the non return valve works at a higher temp resulting in why its one of the major faults found on these modern made compressors.
I guess its down to costings again the use of the least possible materials to try and get the job done, on some of the older ones which run at nearly half the rpm of this one they used to curl the discharge/delivery pipe around the crank pulley side of the compressor before running to the check valve to at least try and cool the air temp as well as to give more room for the motor to come up to speed. The short discharge means that the non return valve works at a higher temp resulting in why its one of the major faults found on these modern made compressors.
Cret
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Thanks for that. Will have a look into that potentially. Got to find a source of the same pipe and the compression olive that goes on the end though - not sure if Sealey will help with that or not.
I suppose before doing anything like that (if I end up having to anyway) I should try smaller vessels to see what's actually needed in terms of volume, so that the corresponding pipework wouldn't be miles longer than it actually needs to be.
So it may not necessarily be a bad thing to do a mod like this anyway to give the motor an easier life in terms of startups in general?
How do those work exactly? I've always had the vague impression that Clarke and Sealey stuff is more or less the same, just re-badged, but I may be completely wrong.
Cret
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Bah! I think the pipe in question is perhaps 3mm bore or so. So I worked out that basically a metre of that would equate to a mere 7.065ml.
So to get a 2L bottle worth I'd need a whopping 283m of the pipe!
Think that's out! Even at 10mm bore (which is pretty thick pipe), I'd need 25m of the stuff to give 2L, (unless the online calculators I used are wrong or I put a decimal in the wrong place or something!).
Of course if it turns out I only actually need a tiny fraction of the 2L bottle's volume it might be more realistic, but otherwise it'd have to be a proper pressure tank of some sort, and that makes me concerned about £££.
So to get a 2L bottle worth I'd need a whopping 283m of the pipe!
Think that's out! Even at 10mm bore (which is pretty thick pipe), I'd need 25m of the stuff to give 2L, (unless the online calculators I used are wrong or I put a decimal in the wrong place or something!).
Of course if it turns out I only actually need a tiny fraction of the 2L bottle's volume it might be more realistic, but otherwise it'd have to be a proper pressure tank of some sort, and that makes me concerned about £££.
If you do put in an expansion chamber arrangement remember it would need a drain or set up in a way that moisture doesn't collect in it but drains down to the receiver, say for instance you used an old fire extinguisher you could tee that off and mount it upside down to drain the condensate water.
But really like you and other posters on this thread we want to know what the problem is with it as it stands not device a way around it, as there shouldn't be a problem with a in guarantee unit.
But really like you and other posters on this thread we want to know what the problem is with it as it stands not device a way around it, as there shouldn't be a problem with a in guarantee unit.
Cret
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- 150
Ahh ok.
Thanks for the points about the pressure vessel eil - have to admit I hadn't even thought about condensation etc.
Well, I was just on the phone to Sealey tech bloke #2 and explained about the compressor and my pepsi fix etc.
He didn't even laugh, although I bet he's telling his pals this very minute about the dangerous hick doing bodges to fix his machine.
He reckons a faulty valve in the control unit so he's sending me a new one (it's the whole switch/control unit), along with new plastic pipe for the stuff I chopped, and compression olives for it. Top man.
Excellent to be able to deal with someone at a big company that is given the discretion to use common sense and enthusiasm in getting a problem sorted for once. Tops marks to Sealey tech support so far!
So once that is here I'll swap it out and we'll see. I can't help but think it's still going to misbehave since I've tried so many things now, but then these valves seem to be bane of a huge proportion of compressor issues, so here's hoping....
Thanks for the points about the pressure vessel eil - have to admit I hadn't even thought about condensation etc.
Well, I was just on the phone to Sealey tech bloke #2 and explained about the compressor and my pepsi fix etc.
He didn't even laugh, although I bet he's telling his pals this very minute about the dangerous hick doing bodges to fix his machine.
He reckons a faulty valve in the control unit so he's sending me a new one (it's the whole switch/control unit), along with new plastic pipe for the stuff I chopped, and compression olives for it. Top man.
Excellent to be able to deal with someone at a big company that is given the discretion to use common sense and enthusiasm in getting a problem sorted for once. Tops marks to Sealey tech support so far!
So once that is here I'll swap it out and we'll see. I can't help but think it's still going to misbehave since I've tried so many things now, but then these valves seem to be bane of a huge proportion of compressor issues, so here's hoping....
Cret
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I think a lot depends on the profile of the tyre doesn't it?
Anyway, cut out on this machine is 145psi from memory and tyres are really REALLY not fun when they burst (I had a perished boat trailer tyre burst near my face a few months ago at something like 30psi, and it stunned me for a fair while/gave me tinnitus for a few hours!), so I don't think I'd fancy me chances with that.
No idea what a fire extinguisher or 'handy size' argoshield bottle or whatever would hold but I'd guess they'd perhaps be better.
Will revisit this sort of thing if the new control box doesn't help (fingers crossed please everyone).
Anyway, cut out on this machine is 145psi from memory and tyres are really REALLY not fun when they burst (I had a perished boat trailer tyre burst near my face a few months ago at something like 30psi, and it stunned me for a fair while/gave me tinnitus for a few hours!), so I don't think I'd fancy me chances with that.
No idea what a fire extinguisher or 'handy size' argoshield bottle or whatever would hold but I'd guess they'd perhaps be better.
Will revisit this sort of thing if the new control box doesn't help (fingers crossed please everyone).
Does depend on profile but even the 65 tyres on my old Xantia are 36 PSI on the front.
Saw a safety vid once where a fitter dismantled a truck split rim without deflating the tyre first, it was quite a mess and was fatal !! Best thing to do would be to install a safety valve.
Saw a safety vid once where a fitter dismantled a truck split rim without deflating the tyre first, it was quite a mess and was fatal !! Best thing to do would be to install a safety valve.
