Michel,

thanks for your interest in the conservation project. I was about to send you a PM but I see that you've had a chance to read the thread.

We have been on a temporary hiatus in progress on the project due to personal reasons but expect to resume in the near future.

Thanks also for the info regarding the Curare airfoil - something that we were interested in finding out but hadn't looked further into it. Do you know if the max thickness remains constant at 30% across the span of the wing? Or does it transition in its chord position?

Indeed it would be interesting to know what airfoils Prettner used on all 8 of his designs as well as the airfoils chosen by the Japanese (Yoshioka, Kato, Naruke, Akiba, etc.) on their designs.

Please post some pictures of your Curare 20 if you have some.

David.