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For cooling, do you taxi with the doors up?

I'm making plans to go see one of the completed 640's in the next couple of weeks. It sounds like if the performance is really 125 kts true and 1400 fpm climb that it'll be a good match for my family ...

Just thought I'd see if there are any 640 builders who care to check in. I'm beginning to think that about 3 of these things have ever been built. Let's see who's in the community.

Year completed ...

Thanks for the new list. My wife and I are hoping to start a 640 quick build this August. There don't seem to be very many 640 builders out there. Anybody have a clue as to how many of these kits h ...

Thanks Matt. Will there also be a CH640 list? Sorry if this question has already been asked.

Haven't been able to connect with the zenair.com web site for a couple of days now. Anybody else having troubles getting their web site to open up? This could make a guy feel very lonely.

Thinking about starting a CH640 project this summer. Any advice on how much to budget for a mid time O-360 with a solid shaft? Thanks.

I'm new to the group here so hope this goes out correctly.

My understanding is that not too many CH640's have been completed as of yet. For those builders who have..... Can you confirm that you ...