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Multi Stage Tesla Turbine Assembly Instructions

Multi Stage Tesla Turbine Assembly Instructions

Model of one multi stage tesla turbine

Model of one multi stage tesla turbine

[notice]Please use safety goggles when operating these turbines – they have been measured spinning at up to 80000 RPM[/notice]

Thank you for purchasing the EpicPhysics.com Multi-Stage & Pumping Tesla Turbine. Please ensure that each individual turbine kit contains the following  –

  • turbine body and base
  • 3 fixing screws
  • exhaust manifold
  • 1mm to 2mm connector (fits most small electric motors)
  • 1mm to 1mm connector (fits to other tesla turbines central shafts)

If not, please contact us at epicphysics11@gmail.com and we will resolve the issue asap.


[important]Please read all instructions outlined below very carefuly to avoid damaging the turbine [/important]

You will notice that we have purposely left the central shaft bare, this is simply because we are unaware what you would like to use the turbine for and therefore we leave the choice up to you. When placing either the 1mm to 1mm or 1mm to 2mm connectors onto the central shaft please do so with extreme care as pulling at the central shaft may dislodge it from its bearings, not to mention that the interior 1mm central shaft is extremely delicate – any imbalance in the central shaft will severely hamper the performance of the turbine.

To add a connector onto the central shaft –

Adding or removing connectors

Adding or removing connectors

  • gently grab the central shaft with a pliers near the turbine
  • slowly twist your chosen connector onto the shaft trying not to apply lateral force
  • repeat this process to remove and replace connectors.

Although your turbines will arrive fully assembled, they will still need to be affixed to a solid working platform by you. In order to have your turbine(s) function in a safe and proper manner, please follow the instructions below regarding installation and the setup of the turbines.

Please note, i have used computer generated images as it makes explanations easier and i can also show certain parts of the turbine in more detail using this method.

First off,you will need to decide which way you are intending to run the turbines as the process involved in setting them up is different in each case. Please read all three sections below and decide which setup suits your needs best.

 RPM Testing

[notice]Please note: It is advisable that all turbines are super glued to the white base from underneath – the gyroscopic forces created by these turbines are very strong. Unfortunately we are unable to do this at the manufacturing stage due to shipping/postage restrictions in certain countries[/notice]

Setting up the turbines for RPM testing is the simplest of the all the setups. The most important part of the setup is to ensure the turbine is fixed to a strong work surface. An individual turbine should easily reach 30,000 rpm with compressed air and should reach 7000-10000 rpm using human lung power – dependant upon the lung capacity of the human :).

The three fixing holes should be easily visible on the base of the turbine, you will need to mark the location of these holes onto whatever you intend to use as your working surface – workbench, table etc.

multi stage turbine mark the location of fixing holes

If you are affixing the turbine to a wooden base it is a simple matter of screwing the turbine to the wood with the screws shipped with the turbine.

If you are affixing to a workbench that is not wooden –

use a 1.8 mm (to ensure the screw has to self tap) drill bit/end mill, drill these holes down through your workbench, then simply fix the base to your work surface using 2mm  screws included in the kit.

Once you have the turbine strongly fixed to the work surface you can begin RPM testing, full details on how to do this using a laser tachometer and reflective tape are outlined on this page – Tesla Turbine RPM testing with a laser Tachometer.

Multi Stage Setup

 Tesla turbine multi stage 3

Tesla turbine multi stage 3


[important]In the multi stage setup the unused inlet port should be blocked off completely, this will ensure that 100% of the air is continuing on through the exhaust ports to the next turbine[/important]

In the multi stage setup the first turbine is to be powered by compressed air, this air is then re-used to power subsequent turbines. I will show one way to set the turbines up for this purpose. Firstly you should have affixed the turbines to the solid base as mentioned in the preceding paragraph. Once you have that done you can begin to attach the RC Fuel tubing which will be used to power the turbines. As you can see from the image below, the RC Fuel tubing is shown in green. The highest of these in the image below is the air inlet, this is where you will force air pressure into the turbine, whether it be by air compressor or the power of the human lungs. The lower two sections of fuel tubing are to be connected to the two exhaust ports of the turbine, these two tubes should then be joined using the Y-shaped manifold supplied with the turbine – this joins both exhaust streams into one stream which can then be connected to the air inlet of a second turbine using another length of fuel tubing. Repeat this process as necessary depending upon how many turbines you have, the images below will explain more than 1000 words can –

Multi stage tesla turbine

Multi stage tesla turbine

multi-stage two turbines

Studying the images above and below you can see how this can be set up to incorporate 4 turbines. The front left turbine is connected to the air compressor, the air passes through this turbine and ends up at the exhaust.Multi stage tesla turbines

Tesla turbine multi stage 1

Tesla turbine multi stage 1

The exhaust then leaves this turbine and powers the one directly to its right, this is then connected to the rear left turbine which then connects to the rear right turbine. We have managed to power 4 turbines from one compressed air line but the results are variable from turbine to turbine for reasons we don’t fully understand at the moment, we fully encourage you doing your own experiments.

Turbine/Pump Hybrid

The versatilty of the Tesla turbine above all other machines can really be shown when two turbines are connected by a central shaft to one another – one turbine powered by compressed air and the other being spun by the compressed air powered turbine, the second spun turbine can then operate as a pump. In this section i will outline the setup of the turbines so that they operate as a turbine/pump hybrid.

Unlike the previous two ways of setting up the turbine/pump hybrid must be approached in a different manner –


  • If you have the turbines fixed to the work surface you will need to remove two turbines from the workbench completely – undo the fixing screws.
  • Place the 1mm to 1mm connector (supplied with the kit) onto the central shaft of ONE of the turbines, PLEASE DO THIS VERY CAREFULLY as the central shafts are easily bent as they are just 1mm in diameter – a bent central shaft will result in poor performance of the turbine, a serious loss in its efficiency and an increased risk of catastrophic failure of the rotating parts.
  • Next, offer up the central shaft of the second turbine to the connector and very gently ease it into the connector, once again please be very patient and careful when doing this. Both turbines should now be connected at their respective central shafts.
  • Place both turbines back onto the workbench and mark all 6 fixing screw locations simultaneously, try to do this without moving the turbines.
  • Drill out the marked locations and fix both turbines to the workbench again.


In the image below the furthest turbine from our perspective is to be powered by compressed air. This turbine will then spin the turbine nearest us by means of the central shaft. Unlike the normal turbine setup, the exhausts of the pumping turbine will now become the inlet ports – liquid will flow into the exhaust ports and be expelled out of what would usually be the inlet ports.

tesla turbine pump

For efficient pumping to occur the pumping turbine (the one nearest us in the image above) must be primed. This involves you placing some RC Tubing onto one of the inlet pipes of the pumping turbine, you must then suck water into the turbine and fill it completely. During experimentation of this setup you will find that the most efficient pumping occurs at quite a low speed, we would imagine that this is due to cavitation occuring at higher speeds which would result in lower pumping efficiencies.


Please handle the turbines carefully as they are very fragile. Always use safety precautions with machinery rotating at high speeds and above all, have fun :).