RPM test of my selfmade Tesla turbine with generator and light bulb

How I build this tesla turbine ►►► www.homeconstr...
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This is the second test of my selfmade Tesla turbine (with a generator and a light bulb). For this test a compressor was used, which actually had too little power and which pressure (8 - 10 bars) unfortunately drops very quickly. So only a short test was possible.
The rotor of the turbine exists of 73 discs out of HDDs.
On my blog you can find a detailed description.