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![]() | Home > Technical > Dual (now triple) compressor, air tank & water trap |
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Lightwater Member Since: 21 Aug 2014 Location: Sydney Northern Beaches Posts: 4934 ![]() ![]() ![]() |
Thank's for your comments. I like more mechanical side of things & if reasonably possible quite happy to modify & improve off the shelf items where I see poor design. As long as I don't have to get my hands too dirty! Getting older! Procrastination, mankind's greatest labour saving device!
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mikehzz Member Since: 04 Sep 2009 Location: Springwood Posts: 749 ![]() ![]() ![]() |
Mate, I'm already old |
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juarodri Member Since: 01 Sep 2015 Location: Argentina Posts: 48 ![]() |
Hi lightwater, nice job! Congratulations
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Lightwater Member Since: 21 Aug 2014 Location: Sydney Northern Beaches Posts: 4934 ![]() ![]() ![]() |
The tank is not necessary but while between actually pumping up each tyre or double checking tyre pressure. The pump can continue to pump and store air so the overall process is a quicker.
I have used some camera mounting plates to clip the compressors in place as it was easier to do this than screw the compressors in as a whole unit, & electrical plug connectors at every connection so if a compressor fails I can easily replace it. Having two compressors I have redundancy as well. I have 6 AWG wire 4 metres to connect to the battery. So positive & negative totals 8 metres, at 13.85 volts, 60 amps there is 4.6% loss. 4 AWG would have been better at 2.9% loss but the cable connectors would have to be larger. Procrastination, mankind's greatest labour saving device! Acoustic insulation ARB TPMS 3xARB air compressors After cooler Air tank On-board OCD pressure air/water cleaning Additional 50L fuel Carpet in doors ABE 2x1kg Waeco 28L modified fridge Battery 4x26ah Solar 120w Victron MPPT 100/20 DC-DC 18amps 175amp jumper plug Awning 6x255/60R18 |
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Lightwater Member Since: 21 Aug 2014 Location: Sydney Northern Beaches Posts: 4934 ![]() ![]() ![]() |
Here is a replica of an old fashion dual compressor setup. I prefer the electric version!
Acoustic insulation ARB TPMS 3xARB air compressors After cooler Air tank On-board OCD pressure air/water cleaning Additional 50L fuel Carpet in doors ABE 2x1kg Waeco 28L modified fridge Battery 4x26ah Solar 120w Victron MPPT 100/20 DC-DC 18amps 175amp jumper plug Awning 6x255/60R18 |
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Lightwater Member Since: 21 Aug 2014 Location: Sydney Northern Beaches Posts: 4934 ![]() ![]() ![]() |
Added a venturi blower which can be used as a vacuum. The vacuum works with short bursts, I might add a second 4 litre tank. Adding more compressors would be better but it's getting a bit expensive! The blower works well when you need a large volume of air but it is only for short bursts of 5 seconds & volume then has to keep up with the compressors.
Acoustic insulation ARB TPMS 3xARB air compressors After cooler Air tank On-board OCD pressure air/water cleaning Additional 50L fuel Carpet in doors ABE 2x1kg Waeco 28L modified fridge Battery 4x26ah Solar 120w Victron MPPT 100/20 DC-DC 18amps 175amp jumper plug Awning 6x255/60R18 |
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adywicaksono Member Since: 05 Jul 2013 Location: dxb Posts: 67 ![]() ![]() |
Overkill setup for LR2 but nice |
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Lightwater Member Since: 21 Aug 2014 Location: Sydney Northern Beaches Posts: 4934 ![]() ![]() ![]() |
2018 Update, rather than starting a new thread:
Also, if you want a nice clean car & you intend on keeping it, it might be worthwhile pulling out a few trims & getting stuck in with the vacuum! Procrastination, mankind's greatest labour saving device! Acoustic insulation ARB TPMS 3xARB air compressors After cooler Air tank On-board OCD pressure air/water cleaning Additional 50L fuel Carpet in doors ABE 2x1kg Waeco 28L modified fridge Battery 4x26ah Solar 120w Victron MPPT 100/20 DC-DC 18amps 175amp jumper plug Awning 6x255/60R18 Last edited by Lightwater on 25th Feb 2018 9:20 am. Edited 1 time in total |
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Lightwater Member Since: 21 Aug 2014 Location: Sydney Northern Beaches Posts: 4934 ![]() ![]() ![]() |
Getting the ugly bits out the way. I am a bit surprised at the amount of dust behind the trim I have removed, to try & find a suitable mounting position for the air line outlet.
Work in progress. I have had the system up and running, but waiting for some proper wire loom tape to turn up. Don't want to use the rubbish from China!
The heat sinks on this compressor I had actually ordered before I did the previous compressors but they took so long to turn up I bashed out some heat sinks from some LED light fittings. The compressor (as other two) is mounted on a quick release photography bracket. It does add a bit of cost but it does make life a lot easier while installing the compressors & if there are any redundancy issues I can easily replace a compressor. I have a second 4 Litre tank as I was not sure which way to go, so I might just keep this as an inline addition when running the compressors in the garage for maintenance. I will still use the 50 amp Anderson plugs. The 50 amps is a rating for hot swapping, unplugging while power is on. I have no intention to unplug the compressors unless it is an emergency. The plug will handle 120 amps using 6 AWG wire, maximum gauge in the 50 amp plug. The tank can be easily removed for draining by unscrewing the two allen bolts & disconnecting air line hoses. Procrastination, mankind's greatest labour saving device! Acoustic insulation ARB TPMS 3xARB air compressors After cooler Air tank On-board OCD pressure air/water cleaning Additional 50L fuel Carpet in doors ABE 2x1kg Waeco 28L modified fridge Battery 4x26ah Solar 120w Victron MPPT 100/20 DC-DC 18amps 175amp jumper plug Awning 6x255/60R18 |
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Lightwater Member Since: 21 Aug 2014 Location: Sydney Northern Beaches Posts: 4934 ![]() ![]() ![]() |
Compressor #2 disconnected to allow more access for wiring for compressor #3. Pulling air hose & wire loom must be half the effort of any job! But it will be worth it in the end.
Bottom right corner of photo is the Anderson plug to the spare wheel well, & small wire running to fan cooling supply of #1 compressor.
In the above photo if you squint you can see the same quick release leaver/handle Manfrotto photography bracket on the #1 compressor. The brackets are very old without the built in level bubble of the new ones (394) so I relegated them to the car & bought new ones for the camera. The two front compressors have ducted forced cooling via 3 vents! Procrastination, mankind's greatest labour saving device! Acoustic insulation ARB TPMS 3xARB air compressors After cooler Air tank On-board OCD pressure air/water cleaning Additional 50L fuel Carpet in doors ABE 2x1kg Waeco 28L modified fridge Battery 4x26ah Solar 120w Victron MPPT 100/20 DC-DC 18amps 175amp jumper plug Awning 6x255/60R18 |
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Lightwater Member Since: 21 Aug 2014 Location: Sydney Northern Beaches Posts: 4934 ![]() ![]() ![]() |
The third compressor is bolted to a block of timber with a nylon M6 nut at the bottom edge of the timber.
Slight reconfiguration of air lines connections.
2 Noctua 80mm fans (from old computers), I might swap them for 92mm to increase air flow, but I need some fan guards.
The easiest position for the moisture trap, no need for an extra bracket. I should have thought of this earlier!
Air line outlet, then to moisture trap which should be as far as possible at the end of the line.
3 compressors running, maximum draw is 85 amps while engine is running at about 14.4 volts. Even allowing for resistance in the power supply cable of about 6.5%, it is not too bad. For comparison the starter motor in 238 amps!
If I can only find somewhere for the second tank! Nevertheless the one 4 litre tank fills from 70 PSI to 90 PSI in 7 seconds. This is a vast improvement over the twin compressor setup. Dusting out the car with 3 compressors does provide a reasonable continuous air supply, 4 compressors would be nice, but this is already getting out of hand! Two compressors was not enough! Procrastination, mankind's greatest labour saving device! Acoustic insulation ARB TPMS 3xARB air compressors After cooler Air tank On-board OCD pressure air/water cleaning Additional 50L fuel Carpet in doors ABE 2x1kg Waeco 28L modified fridge Battery 4x26ah Solar 120w Victron MPPT 100/20 DC-DC 18amps 175amp jumper plug Awning 6x255/60R18 |
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Largered Member Since: 10 Jul 2016 Location: UK Posts: 1978 ![]() |
On your recent travels "We drove about 9000km around Victoria & SA"......... did you have cause to use the compressed air set-up ???
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Lightwater Member Since: 21 Aug 2014 Location: Sydney Northern Beaches Posts: 4934 ![]() ![]() ![]() |
I had one puncture about 100 km from a town! I also did not have my second spare wheel as we had not intended to go very remote.
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Lightwater Member Since: 21 Aug 2014 Location: Sydney Northern Beaches Posts: 4934 ![]() ![]() ![]() |
I will also add that you don't have to be that far from civilization. 100 km, +45°C, not much water left & 2 flat tyres! I have had 2 flat tyres in one go & it really makes you sit up & think about basic survival! I have driven all over Italy, France, Germany, England etc. The Australian outback at the best of times is a whole different situation!
Chambers Gorge photos link: https://www.freel2.com/forum/topic30929.html Procrastination, mankind's greatest labour saving device! Acoustic insulation ARB TPMS 3xARB air compressors After cooler Air tank On-board OCD pressure air/water cleaning Additional 50L fuel Carpet in doors ABE 2x1kg Waeco 28L modified fridge Battery 4x26ah Solar 120w Victron MPPT 100/20 DC-DC 18amps 175amp jumper plug Awning 6x255/60R18 |
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