Cold Steam Tesla Turbine - Open Source


We are a team based in UK & USA completely dedicated to delivering this open source technology to the people of the world, so that we all have the chance to thrive with access to cheap, clean energy and transport.



Nikola Tesla invented a cold steam implosion engine and a cold steam explosion engine in 1909.

They are well known as a Tesla turbine and Tesla pump but massively misunderstood!

The fact is both are capable of a four stroke cycle along an inwards (female) spiral path for the turbine and an outwards (male) spiral path for the pump.

They are four stroke cycle engines that are powered by a phase change of water vapour in air causing implosions (female) in the turbine and explosions (male) in the pump.

Either version delivers power / torque to the axle via the high viscosity of cold steam.

Wind mills, water wheels and solar panels can be replaced by Nikola Tesla’s most misunderstood invention which harnesses nature day and night, even when there is no wind, water or sun!

Ambient heat energy can be harvested 24/7/365 from the atmosphere using Nikola Tesla's cold steam engine which he postulated in 1900 and then patented in 21 different countries by 1913.

Nikola Tesla didn’t patent any of his other inventions in as many countries as he did with the cold steam engine.

In fact, 8 of the 21 counties it was his only patent. Japan, Australia and India are three of those 8 countries.

20 of the countries patents featured the turbine and pump together in one patent. Part numbers 1-29.

In USA the patents were separated and this has caused some confusion.

The British and Canadian patents came to light thanks to a great researcher called Bruce Perreault who obtained them from the British patent office and kindly put them into the internet public domain.

The British patents revealed new truths about Nikola Tesla’s work and how he developed this machine with aviation as the ultimate goal.

His work from 1909 was pretty much dedicated to developing every component, instrument and safety device needed for what he saw as “the perfect flying machine”. It was his childhood dream!



Our work is open source which means it can be freely shared, copied, replicated and improved by anyone in the world.

We offer transparency and embrace collaborations. Many brains coming together with the same goal is superior to just a couple of guys with a vision for a better world.

Our work is published, transparent and copyrighted, which protects the work from being claimed by any individual or company anywhere in the world and most importantly keeps the designs in the public domain ready for anyone to use and improve.



We have worked full time on the project for over a year.  During that time we have built and tested around 20 prototypes to understand Nikola Tesla's cold steam engine.

Many of these prototypes can be seen on our Youtube channels.

UK Youtube channel = Grav Inert :

US Youtube channel = iEnergySupply:

We would like the project to remain open source and for the benefit of everyone, rather than it getting shelved like many other technologies that could of furthered our human progression.

The reason this technology never made it to the mainstream in Nikola Tesla's day is because his machine features an extremely simple design with one moving part and has no planned obsolescence built in. In fact quite the opposite, there are no parts to need servicing or repair.

Nikola Tesla let people believe it was a machine to be run from superheated steam knowing that one day, when the time was right, someone would figure out that cold steam has a much greater viscosity than water, can move easily at supersonic speeds and is a very safe fluid to work with.

Safety was of utmost importance to Nikola Tesla!

Inside Nikola Tesla's cold steam engine it has no, pistons, vanes, blades or oil. It is frictionless and features atmospheric air bearings and a steel rotor keyed to a shaft.

We have found that the steel used for circular saw blades is an ideal material for the rotor and there are a number of steels suited to the axle.

The casing is best to be cast from aluminium and then mating faces machined flat.

Even the most novice mechanic could assemble and dissemble this engine.



We have studied Nikola Tesla's patents and built the machines to understand the wording. We have then produced more advanced prototypes based on the test results.

We have tested single stage and two stage versions of the turbine and pump.

Both turbine and pump  use the principle of adhesion and viscosity to lever the rotor. Cold steam is 1.7 times more viscous than water and 85 times more viscous than air.

The cold steam levers the rotor at the edge ensuring torque and power at the axle.

The starter motor is turned on and the rotor is spun up to the speed of sound. As soon as the rotor periphery is travelling at the speed of sound, a continuous sonic boom is started. This releases an enormous amount of energy and a large vacuum is created causing a cold sink that provides a draft for the latent heat from the atmosphere to flood into the engine and continuously implode if using turbine or explode if using pump.

A generator is attached to the shaft of the rotor and provides clean electricity with zero emissions and very little noise.

Our experiments have taught us both the turbine and pump can be used as rotary engines using this method.

The turbine and pump require completely different starting methods in order to get them to supersonic speeds. The turbine needs to be propelled and the pump needs to be spun by the axle.

We have tested various different starting methods including, motors, compressed air, compressed C02 and water.



Did you know that thunder is the sonic boom of lightning?

Lightning happens in open air whereas the continuous sonic boom in the cold steam engine is in a partial vacuum which greatly muffles the sound energy.



The engine can use regular bearings, however, using air bearings the engine is 100% frictionless and therefore highly efficient (90%+) as no energy is lost by friction.

If you look at the photograph below with the top of the casing removed, Tesla uses an egg shaped lump on the axle to allow the air or cold steam to support the axle and prevent up and down movement as well as side to side movement, enabling a 100% frictionless stable design.



The whole world will benefit from the discoveries myself, Paul Townley (Plymouth, England) and Jeremiah Ferwerda (Idaho, USA) have made recreating the mechanical machines invented by the Serbian genius Nikola Tesla.

With your financial help we can speed up the process of building prototypes, making quality videos and publishing our test results to our youtube channels.

Progressing this technology swiftly to a point of a system being available that is far more efficient and cheaper than a solar installation is less than 6 months away.

We have worked out the design for Nikola Tesla’s twin implosion turbine used in his flying machine patents.

The engine needs to be manufactured from metal and with your help we can build and demonstrate flight in a way no one has seen before.

We have also designed the mechanism to point the engine in the direction of travel to enable the aviator to choose the direction in which they wish to go.

With funding in place the first flight could take place on a small scale within a few months and on a larger scale soon after.

How quickly we make this happen depends on how quickly we get financial support. 




Using the frictionless cold steam engine technology we can produce:

a) Clean electricity with zero emissions 
b) Clean and safe transport using propulsion
c) Clean water 
d) Clean air conditioning
e) Clean heating
f) Clean and safe aviation using vacuum implosion which is safer than any jet turbine.

With collective funding, this technology will swiftly be available at a low cost.

This goal will be easily be achieved by many people donating a small amount!

We will continue to keep the technology in the hands of the public!

Together we can swiftly create a better world!

Many thanks to all the people that have supported us so far in our quest!


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Paul Townley 
Plymouth, South West England, United Kingdom
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