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Old 07-20-2019, 12:59 PM
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soundiceuk soundiceuk is online now
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In the video I’m using my 5 axis machined acrylic casing currently running a 1/4” BSPP with 3mm straight port and a 1/2” BSPP 5% diverging nozzle.

It strangles the flow unbelievably!

I know this simply because my 3D printed casing had the same port but the 3D printing blocked the hole a bit.

I drilled the 3D printed casing port out to 4mm and the top speed was 23,000rpm

The same stainless steel 316 rotor can only do 18,000rpm using the 3mm port and exactly the same compressor.

I have the acrylic casing currently being modified on a 3 axis.

The new design has a 1” port and 1” 40% diverging nozzle.

I would have gone bigger if I could.

Atmosphere is the battery. Atmospheric pressure is the voltage, the volume of air is the current.

This pump was running two 12.5kg mild steel discs in the video.

The 1/3hp motor has 1400rpm top speed.

The flywheel freewheels for 32.5 minutes with no turbine and the flow is good.

With the turbine on top the turbine started spinning at around 800rpm.


I didn’t measure how long but ran for as I could instantly see the vacuum was strangled massively.

Currently it’s like having a resistor on the port and small negative resistor on the nozzle.

The new turbine inlet is going to be like having 0 gauge wire instead of 18 gauge and huge resistor!

The new diverging nozzle is going to create very fast flow. A huge negative resistor.


How long will it run with a metal balanced rotor and the new inlet?

I would say until you block the inlet or until the bearings break!

That’s how Tesla designed it! No planned obselence here!

This is Tesla’s Niagara Falls Mk2 !
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