Bob Clarke’s Zenith run, w/requisite CMP.



Below is a picture of Bob Clarke’s 3,000 cc Corvair, destined for his Zenith 750, running on my test stand at the 25th Zenith Aircraft Factory Open House three days ago. It was a flawless break in run, it started after 2 seconds of cranking.



Above three pictures of the required CMP “The Captain Morgan Pose” , which all Corvair engine builders do when their engine runs. Its something fun which has become a tradition over the years.  To see a previous CMP photo contest, get a look here: “Captain Morgan” Contest at #39 –  read the comments, they are pretty funny.


This all may sound pretty silly, but when your moment of triumph arrives, you also will give in to tradition and silly fun as your peers cheer you on.


Please you the comments section to vote for the ‘peoples choice’ CMP in these pictures.




About William Wynne
I have been continuously building, testing and flying Corvair engines since 1989. Information, parts and components that we developed and tested are now flying on several hundred Corvair powered aircraft. I earned a Bachelor of Science in Professional Aeronautics and an A&P license from Embry-Riddle Aeronautical University, and have a proven 20 year track record of effectively teaching homebuilders how to create and fly their own Corvair powered planes. Much of this is chronicled at and in more than 50 magazine articles.

One Response to Bob Clarke’s Zenith run, w/requisite CMP.

  1. Dan Sheradin says:

    I’ve been to 4 or 5 Corvair Colleges and have seen dozens of engines start for the first time. It’s a very special moment, nearly everyone stops working and gathers around to watch. You’ll never forget the sound and of the engine as it takes its first breaths nor the look on the builders face when it fires and runs perfectly. They come as a builder, out to run their engine, and return as a master of their completed engine.

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