The high speed ignition miss is gone after we installed an 18 volt
 battery for the complete Motec system including the ignition system.

 The prop tips are going transonic (8000 engine RPM and 2600 prop RPM)
 at only 72% throttle opening and 60 inches of HG manifold pressure.
 The intake manifold blow off valve is probably set to around 80
 inches of Hg.

 More throttle opening and more boost will just fight the stone wall
 drag on the prop tips. The thrust will not increase appreciably.

 Here is the data out of the Motec 800 EFI system. The logged data
 chart is attached.

 The manual waste gate was wide open and there is still a 1.25 inch
 diameter  vent hole in the exhaust manifold. We are still only using
 some of the extraordinary  potential of this engine. I would say
 less than half of the potential energy in the exhaust.

 IMHO the prop blade area is too small. We need wider blades or a 4
 bladed prop.  However it is climbing so fast we may still get the
 record with this prop.

 The airplane was gone out of sight in less than a minute. It got up
 to 5500 feet but we did not have a camera in the cockpit this time
 monitoring the altimeter..

 The RV8 chase plane with Kelly Vogel flying  lost it. It was out of
 sight before he got off the ground. He was delayed by about a minute
  taking off by the tower.

 We are now up to six flights.

 Paul Lamar

Paul, great news.  What is the dia of your prop for it to go transonic?
Neil Unger.

84 inches.

I am thinking of building one of these props.
Relatively cheap Warp Drive blades.
Easy to build the hub.

High static thrust is what we need and this prop has it.

This Coot jumps out of the water with Nitrous Oxide
and about 300 HP..

We can add or subtract blades and adjust the pitch.

Paul Lamar


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