Nitrogen in Tyres

Air is 78% Nitrogen anyway.

(And that important plant food, Carbon Dioxide, is 0.04%.)

another 1 here ross

Absolutely!
Nitrogen in tyres is one of the things that aircraft use. Reason for this is the really stressful "instant acceleration" the tyres undergo on landing - they go from standing to full rotation in under a second, and the temps go from sub zero in the air to really really high in the same time frame.
For that application, Nitrogen (being an inert gas, not prone to ignition) is an absolute benefit.

Unless you are intending to start flying your van, and landing it at around 300kph, I'd suggest that the Nitrogen fill is pure and utter marketing bull.

As suggested above, the free air from a servo (or your own pump, come to that) is mostly Nitrogen, anyway!

Johnat
Nearly all aircraft spin up the tyres to a reasonable survivable speed by a finned accelerating device or they drive them via a servo motor. They don’t begin from a stopped position. If totally stopped a large aircraft simply shreds the tyres and they then have no tyres to land on.
I agree the “nitrogen” idea is a great money income for caravan dealers and auto dealers. Anyone for cream if you can get it?

I call BS on everything just about all the salesman's reasons related to the "That's why they put it in aircraft tyres".
None of ours 'spin them up', other than using contact with the ground.

Its put in aircraft tyres because it is dry, its also used in the oleo struts (suspension) for the same reason and its a bonus it comes conveniently in a 3000psi cylinder so you don't need a expensive mechanical compressor out on the tarmac that will struggle to reach the 200psi+ you need to inflate them in the first place.

You can be confident that when you check the tyres in the morning that the tyre and strut pressures will be pretty close to what you set them at to account for the aircraft's weight when it lands after everything has been soaking at -30 for a few hours.

Water when heated can take up 1,700 times its volume when at room temperature, which can make it a bit difficult to accurately set the pressures in the morning when doing the Before Flight servicing. Pump them full with hot, humid air in Townsville and the tyre will be well under inflated when landing in Melbourne.

A spin-up device? What bollocks. Mate, I fly the Boeing 737, and I can tell you none of the wheels are turning at touchdown. Nor have they on any other plane I've flown in the last 38 years.

You've been watching too much Thunderbirds :D :D

The tyres don't get hot in a split second, either. The majority of the heat generated depends on the brake setting used and the weight of the aircraft at touchdown.

I've landed in Adelaide at 60T, used minimal braking, taxied in, and the tyres are barely warm when you check them.

There have been experiments from the '40's through to the '60's, I think, to test spin-up devices on aircraft wheels. None have got off the ground, so to speak :-)

There are all sorts of reasons propounded: impracticality, expense, weight, complexity, gyroscopic forces possibly affecting aircraft controllability just prior to touchdown, tyre manufacturers buying up patents so they can sell more tyres (surely not :-)) etc, etc.

The top post in this link offers a credible reason.

Some corporate jets have offered a nosewheel spin up option for operations off gravel runways, supposedly to reduce debris being flung up and possibly damaging the aircraft's underside skin, or worse, entering aft-mounted engines.

But in general, no manufacturers employ pre-landing spin-up of main gear wheels.

Well, you didn't read the question well then, did you. I didn't ask for you opinion on the pros and cons of using it. Just asked if there was a DIY kit.

yes there is

Perfect response given his ungracious replies Hoyks.

For those interested in the issue rather than the specific question, here's another detailed report by Robert Pepper at PracticalMotoring. Unlike many motoring scribes Robert generally does his homework, as his in-depth vehicle tests show.
SHOULD I PUT NITROGEN IN MY TYRES DEFINITIVE ANSWER

Well, you didn't read the question well then, did you. I didn't ask for you opinion on the pros and cons of using it. Just asked if there was a DIY kit.

Well, you didn't read the question well then, did you. I didn't ask for you opinion on the pros and cons of using it. Just asked if there was a DIY kit.

I dunno, Swampy - Don't ya reckon, some of these blokes might be using nitrogen in the tyres, to get a slight race advantage?! [;-)

Cheers, Ron.

Well, you didn't read the question well then, did you. I didn't ask for you opinion on the pros and cons of using it. Just asked if there was a DIY kit.

Well, you didn't read the question well then, did you. I didn't ask for you opinion on the pros and cons of using it. Just asked if there was a DIY kit.

There you go NITROGEN INFLATION KIT, 2 minutes on Google.

Wow just had a look at the cost Shaker posted for the tank plus refill plus you need to add on for a tyre valve pump going to be expensive especially over the long term.

Glad I set my 12v Bushranger air compressor up 15yrs ago with no ongoing costs.

Another 1 here ross

No but it does sucks money out off your wallet

The link I posted mentions that issue Michael. Dot points from Robert Pepper's article:
* Some racing cars apparently have two valves to reduce the "problem" - one to purge, the other to fill.
* As he explained, in practical terms a nitrogen-filled tyre will be ~90% N while an air-filled tyre will be ~80%N.
* There is no data to back up any significant performance/ride/handling improvement claims for "normal" use. N- and air-filled tyres perform the same.
* N-filled tyres still have to be checked and re-inflated.

Air contains water vapour so if you intend to pass your wheels down through multiple generations perhaps N2 is your gas of choice. Add some oxygen for a laugh or two.

You will probably get better value filling your tyres with helium,

It will reduce your GVM and give you better fuel economy :)

Also beneficial if you want to talk like a chipmunk...

Not to mention some added excitement Alby. You coud try using Hydrogen for even more bang for your driving buck, but you'll probably only get one opportunity to enjoy the experience