Nitrogen engine.

[Methusala]

Also to inflate pneumatic tyres.

[planedriver]

It must be very, very expensive. A doctor at a medical centre wanted to charge me $90 for a 2 or 3 second burst of it to freeze a little something off the back of my hand.

I had to laugh, and then told him what it costs per litre. then went elsewhere and they did it for free. 

 

Edited Friday at 10:55 PM by planedriver
spelling mistake

[danny_galaga]

On 04/04/2025 at 7:38 AM, facthunter said:

You don't have to heat it to turn it into a gas. Nitrogen is used to remove condensation Aircraft magnetos in the Tropics. Nev

I think the idea is you want it to be quite high pressure, and lots of it, so heat is in the mix there. Possibly running through a 'radiator', which in this case is absorbing heat from the air.

[facthunter]

No IT has to be dry and get rid of condensed moisture inside the Magneto by Absorbtion and evaporation. Nev

[danny_galaga]

6 hours ago, facthunter said:

No IT has to be dry and get rid of condensed moisture inside the Magneto by Absorbtion and evaporation. Nev

What is this a reply to?

[Underwood]

I previously spent a lot of time rebuilding and tuning Motorcycle and mountain bike suspension, I used bottled Nitrogen to recharge units that used the gas instead of a coil spring.

Mainly used as its inert so wont encourage internal corrosion

Air is about 3/4 Nitrogen anyway, but its the oxygen that causes strife.

I've always thought that Oxygen is some sort of dark joke from the big guy, we need it to stay alive but its slowly killing us🤪

[planedriver]

When I first posted this thread, I never imagined that it would stir the thought pot so much, but the response has been really interesting from all.

[spacesailor]

So ! , it seems an overlooked fuel engine .

not ' IC ' / CI / EV OR CA ( COMPRESSED AIR / STEAM ) .

NOW ! , Boffins get your idea's working. 

Two stroke " wasteful " , rotary ! .

Four stroke ! Does not need compression. 

Direct injection liquid  over heating element! .  ( High pressure low volume cylinder )

Exhaust into large volume low pressure,  secondary cylinder ? .

four pot ! , ' Two high P ' & ' two low P ' .

CONFIGURATION ? .

who will make their name ? .

spacesailor

 

[facthunter]

You are wasted Here. space.  Nev

[spacesailor]

Yes but looking at my posted specs It is a two-stroke. 

And yes .

my bro & I made a " compound-steam engine " out of ' high-pressure hydrolic piping. 

It worked fine under ' compressed air .

but the powers to be,  said we would need a " boilermakers " certificate to operate our ' home made ' flash water tube ' boiler. End of a dream .

 spacesailor

[danny_galaga]

2 hours ago, spacesailor said:

Yes but looking at my posted specs It is a two-stroke. 

And yes .

my bro & I made a " compound-steam engine " out of ' high-pressure hydrolic piping. 

It worked fine under ' compressed air .

but the powers to be,  said we would need a " boilermakers " certificate to operate our ' home made ' flash water tube ' boiler. End of a dream .

 spacesailor

So get a boilermaker.

[BrendAn]

On 31/03/2025 at 8:24 PM, onetrack said:

There were some buses that used big flywheels for part of their energy inputs, in Europe and in Africa, in the 1950's, but they were ultimately unsuccessful.

 

https://en.wikipedia.org/wiki/Gyrobus

 

I seem to recall there were further experiments done with buses using flywheels operating in a vacuum in a sealed compartment, but ultimately, this idea was not proceeded with, either.

a good example of stored energy in a flywheel would be inertia starters used on radial engines.