Hi,

In answer to your all balsa blades. Yes, they will work good. I have flown several gyros with just balsa and no covering or paint. However, I did add some lead shot in the tip of the blade. Adds a lot of stability and keeps the blades from flexing. I also agree, use the SG6042 blades profile. Make your Clark Y blades and use something like a dremel router or a small power hand planer to cut the under camber.

Phil