4x4 Tyres as Air Tanks for 12V Compressors? Did the Tire Explode? 

They're a great idea!

It sounded like a shotgun at close range, but you felt it in you whole body! Jack was a bloody legend.

@@LockyourHubs4WDing were you worried about stray shrapnel or tyre hitting your zuke that looked close ? I just found my old book Safe outback travel by Jack Absalom.He’d did some cracker paintings.Boy he loved his sigma.

@@stevezurek7281 I had 20 meters of hydraulic hose out to the tyre, I was kinda hoping not to hit the Zook (The better 3/4 would be furious! :) )

Haha, you should have been there!

You should have been there!

I'm still a little jumpy! As you saw, it certainly got my attention, I wasn't hamming it up for the camera at all, I needed a bit of a sit down to regain my composure. Though, I think the data was worth it. I would hate to say it's fine to pump them up to 150psi and have someone hurt, when it's not leaving enough safety margin.

@@LockyourHubs4WDing yes agree mate, I felt you were responsible in your message delivery. I don’t think any numpty will do the wrong thing based on your video👍

Let's hope not!

I felt it through my chest!

RIP Jack indeed. I think it was worse knowing that at some stage it was going to let go, but not when. It was no better the second time!

Thanks mate!

Hahaha!

You could be right.

It definetly grabbed my attention!

I would like to add tanks, just like the LandCruiser, there's just no room, that's what led me to the idea of using tyres initially. If the valves can be made to flow well enough, it might just be work it. The Schrader valve has a strange external thread 8V1-32 from memory, so as soon as the tap arrives I can knock up a couple of adaptors and see if all of the work was worth it or not!

One top engineer I know who was my boss who we did vechicle testing is using his spare as a tank. It's a good idea if you keep in the safety limits. Thanks for the video. Russell

@@RustyCandyAdventures I might be on the right track after all! In the second round, I'll test single and dual spares for the increased valve area, with the valve in and out and see how that works.

Thanks mate, you know I'm going to have to try the coke can thing now.... lol

@@LockyourHubs4WDing sorry mate, it only worked back in the day using the pop-top can! Anyway, you win with a 35 muddy 🙂

Bugger......

Thanks mate, I can't wait now to see if the valve flows enough to make it worthwhile on the 4WD.

You're right, any highly compressed gas holds a heap of potentially dangerous energy. I've seen a higher flow valve used by a couple of aftermarket mobs, though the standard tractor sized valve could be a great thing for 4WDs as converters are readily available if you have to pump up using a standard sized Schrader valve.

@@LockyourHubs4WDing There would no doubt have been someone out there doing larger type valve conversions of tractors in the 4x4 world. Can't really say I've looked into it. I've been more focused on a plug and play setup that allows all 4 (5 or 6 if you tie the spares in) tyres to be inflated or deflated at once instead of doing each tyre one by one.

@@liamcooper6721 I use a Jamec Pem Auto 1000 that's been converted to allow two tyres to be pumped up simultaneously. It works ok, but the hoses are constantly getting tangled! Two is bad enough, I can't imagine 4!

@@LockyourHubs4WDing hahah well its much the same because the way this is done. The Jeep boys put the ARB twin under the front seat and have 2 quick connects (1 on each side of the car) to plug the airline into which has a y splitter that then goes to each tyre. Hook in 4 tyres in one go for inflation or deflation.

Cheers, I'm still a bit jumpy! lol

Not a temporary storage tank?

Glad you like it!

I've found with a decent sized tank setup with 150psi in it, both the valve and the ARB digital inflator were slowing things down. To use them as airtanks, the Schrader valve will have to go.

@@LockyourHubs4WDing would it be possible to adapt the fitting from a tyre deflator that removes the valve and have the "inlet" hose connect instead of the pressure gauge on it?

@@Wdeane1957 I've looked at them and the insert that's used to remove the actual valve uses an o-ring to seal and looks like a potential point of leaks to me. I've got access to machine tools, so I think I'll knock up an adaptor.

The ultimate intention is being able to pump up the spare with a hard mounted air pump while still driving, so you stop to inflate with the spare fully pressurised. With your senario, on the second tyre, the pressure differential will be less and therefore it'll take longer. Though I want to keep the Zook's engine running and the air compressor continuously running. I'm going to have to custom machine an adaptor for the schrader valve stem to an air line that doesn't have any restriction, I can't find anything commercially available, it's a weird 8v1 32 thread.

The resultant pressure would depend on a number of variables, including tyre size, tyre location (under the car in the shade, or exposed in the sun etc) and the starting temperature etc. Though most of those concerns aren't relevant for the use case senario here. Only the ability of the tyre's structural integrity to hold the pressure for a short period of time matters. The senario I would envisage is, you're heading out of the forest/beach and for a few minutes you're able to still drive and pump up the tyre using the on board air compressor. When you stop to pump up the deflated tyres, your tyre/air tank is to the set pressure and ready to go. As to regulatory and insurance requirements, that would depend on the jurisdiction and individuals insure's PDS.

You should have been there!

The tyre was the weak point, the rubber valve was ripped from the rim on the muddy and broke the steel valve in the passenger car tyre. Steel Schrader valves are used in applications of multiple thousand psi of pressure, while they might be a flow restriction, the strength isn't an issue.

So the valve is quite save for these high pressures and won't be dislodged right 👍

@@johndupreez7167 yes, they're fine.

Damn, I would have been hesitant as well!