Doug Selsam's Super Twin at Wulf Field

August 18, 2008

Selsam's SuperTwin has been running in unattended operation since March. The unit is more powerful than turbines tested before and this has required several time consuming and expensive modifications of our test equipment.

Because of other commitments, testing the turbine has not been a priority. Consequently, the tests remain incomplete.

Below is a scatter plot of data points for one period this summer. This is not a power curve and is not the final results. This is an interim measure until I can finish testing to my satisfaction.

March 27, 2008

The SuperTwin was running unattended during several days of very high winds. Power was exceeding the limits of the instruments. This will require some modifications of the instrumentation and diversion loads.

March 22, 2008

Nancy and I raised Doug Selsam's Super Twin on a calm day and it's ready to go.

Doug Selsam's Super Twin installed at the Wulf Field.

Doug Selsam's Super Twin operating in light winds just after installation.

March 13, 2008

Doug Selsam braved a particularly windy day (30-40 mph with gusts to 50 mph) to mount his Super Twin on one of the test towers at Wulf Field. Installation under such conditions is never easy.

We didn't raise the tower because of the high winds.

Doug Selsam tightening set screws on the extended shaft of his Super Twin.

Doug Selsam bolting one of two rotors onto the generator's extended shaft.

Doug Selsam with his multi-rotor "flying" van near Oak Creek Pass in the Tehachapi Mountains.

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