New Nose Bowl Plug – #4201-B


Here is an update on the story of my new nose bowl for STOL Corvair powered planes. This is the original story from seven weeks ago: WW- ‘STOL Bowl’; A new nose bowl available this month, Pn. #4201-B.


In the original story, I projected having completed parts on hand by now. It was reasonable from speaking with my mold shop, but there have been delays on his end, and we are just getting to the molds now. I have known him and worked with him for more than a decade, he is pretty good on timelines, but not in every case.


I deal with it because his quality is good and the work from his shop is a good value to homebuilders. In my last 29 years in business, I have dealt with many suppliers, and have always sought out quality, and accepted some delays to get it. The new projection based on today’s face to face meeting in his shop is 3 weeks to deliverable parts.  I’m a little too old to believe in Santa, but still optimistic about what I want for Christmas this year.



Above , a view of the topside of the finished plug, the inlets have built in rings and are more than 5.5″ in diameter.



Above, a view of the bottom of the new plug. It has been check with elaborate contour tooling, it is polished next in preparation for making the molds from it.




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.

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