STOL Bowl close to product stage


Winston Churchill had a saying about critical weapons production in wartime:

The First Year; None,

The Second Year; A trickle,

The Third Year, All you want.


While developing new Corvair parts isn’t quite as difficult as perfecting the manufacture of Liberty Ships, it does test one’s sense of persistence. I often remind myself that if it was fun and always worked exactly according to schedule and plan, it wouldn’t be called “work.”


Although we have had significant delays getting this part to production, I’m now pleased with the results, and we are really, really close to having them on the shelf, and when we do I will release the price and availability information. A builder asked why I don’t yet know the cost, and I pointed out the process of getting the production molds took making two plugs and two sets of test molds, each one tuned, and only when we are 100% of the way through will I begin the savage multi hour negotiation with my composite guy to settle how exactly the pile of man hours in development get amortized into the product or paid for outright. We are friends, and this all part of the game of entrepreneurial fun. We always shake hands when it is done, but the middle part looks like a verbal knife fight in a phone booth. This fun should start this Friday afternoon.



Above, the new STOL bowl with enlarged inlets with built in inlet rings. The cam gear and the Gold hub give a good idea of just how big the new inlets are.  This is a proof of mold model, it does not have flanges to join the top and bottom, this was done to allow us to quickly verify the fit of a flying Zenith 601XL. It is an exact match, and thus can be retrofitted to any plane with our standard nosebowl without altering the cowling sheet metal nor the baffelling.


More news soon.


Older story on this part:

WW- ‘STOL Bowl’; A new nose bowl available this month, Pn. #4201-B




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.

2 Responses to STOL Bowl close to product stage

  1. David says:

    in the immortal words of the Offspring (the more you suffer the more is shows you really care)!!

  2. David says:

    Thanks for caring!

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