Zen Vair discussion group update, notes on joining


24 months ago, We started the ‘Zenvair’ information board, a place where we could collect and share a large database of information on Zenith aircraft powered by our Corvair Conversions. Initially, we restricted the participants to those with flying Corvair powered Zeniths, and Zenith builders who had reached the point where their engine had been run. The logic was to build up the data base with people with first hand experience, and those who had already been though our engine build process. This phase is now complete, and we have made the decision to open the membership to all Corvair- Zenith builders. The only requirement is they must have a Zenith kit or set of plans, and they must have a Conversion manual from us.


Above, Phil Maxson with his Corvair powered 601 XL at Corvair College #24 in Barnwell SC. He has worked tirelessly as the moderator of our ‘Zenvair’ discussion group. Like our ‘PietVair’ group, the content is not secret, but it is private, available to group members only. Inside, the discussions are technical, but friendly. This is driven by the fact that there are no anonymous people, every single member has a profile and uses their real name. Many of the members already know each other from Corvair Colleges, and the groups reflect the positive attitudes of the Colleges. 


If you are a Zenith Builder, you have one of our Conversion manuals and would like to be part of the discussion group,  please contact Phil or myself by email.  Signing up is simple and it is absolutely free. There are no costs nor ‘donations.’  Please be advised that if anyone contacts Phil with an email that says “Sign me up, I’m Flyboy26@gmail” they are not getting access, because all real builders are going to send an email that looks like “My name is Mike Smith, I am building a Zenith 650, Kit number 6524, and my corvair conversion manual is #9923, thanks.”


Phil’s email is:    zenvairforum@gmail.com,

Mine is: WilliamTCA@aol.com


Before anyone asks, The group is specifically for supporting our Corvair conversions, and therefore we don’t extend memberships to people who chose other engines or are stuck with engines from now defunct LLC’s.  This is nothing new, although I have been in business 26 years and know a lot about flight engines, builders understand  that I have a strict personal code of never offering advice on an engine or installation which I have not personally worked on.  The internet is full of “engine guru’s” who claim to be able to offer valid advice on any engine, not just ones they have worked on. In my book, that is not a morally nor logically defensible position. My work is just to share what I know from first hand proven experience. The subject of building and flying planes can have serious consequences, select those that would advise you carefully.




To read the stories about the original formation of the Zenvair group, read these two links:

‘Zenvair’ Information board formed


‘Zenvair’ information board, part #2





Above, Phil and I in my front yard the night we finished his 3,000 cc engine as an upgrade for his 601XL, which had flown on a 2700 engine since 2006. Phil is a pretty smart guy, but truth be told, it is his son who has the PhD in physics from Cornell. Phil just has the shirt.



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