The Hoskin blades are the cheapest to manufacture being they are made of plywood. The other are made of spruce and birch with the rear section of balsa.
Construction was done by a router rail type jig set up for a 8H12 airfoil. This method takes a lot of labor out of the equation and makes accurate duplication easier. If I were to do it over, I would go for the CNC type machine so cord and length could be adjusted by computer.
Now I'm working on the next part in toward the hub. An elastomeric strap made of 304c stainless steel laminae, .009" thick. This eliminates the alpha and delta hinges leaving only the lead-lag hinge to design.
I have a huge 3-phase industrial shaper that could easily shape to 6" or maybe more.. I'd have to look.Sorry, that's the type of moulder that I have. Mine is made by Jet and is relatively small compared to industrial ones. I have been told that some have up to a 9 inch cutting capacity. That would give you a good range of airfoil cords.
No...not really.Hey, I just saw a 1932 Ford, all original, operational for $9500.00.
Then I saw a 2002 BMW for $9750.00.
Im just sayin....GET IT?
Yes Don. There have been a few failures. Rare and sometimes hard to find the reason why.I have a question regarding rotors. Has there ever been an inflight failure of a rotor blade? Especially the newer designs, like the Dragon Wings? Thanks.