Keith... My Corsair weighs 10 lbs. It's no speed deamon, but I have no problem keeping in the air. Thanks for your comments. It's good to know I'm not damaging the engine.

Michael... The hub is custom made. I reverse-engineered a Soloprop hub and sized it down to 1/8-scale. And yes, I can actually change the pitch (on the ground, during setup). I have more videos of it. See links below.

Walts... As mentioned, the Corsair weight 10lbs. With 10' pitch the theoretical max speed is proven to NOT be a concern. But with a 12 lb model, I wouldn't try anything less than 12' pitch.

More vids (on YouTube):

[link=http://www.youtube.com/watch?v=3pagp2fy97U]How to mount the 1/8 scale hub.[/link]
- See the inside of the hub.

[link=http://www.youtube.com/watch?v=oU0RrCmR7Sc]1/8 Scale Hub: First Run[/link]

[link=http://www.youtube.com/watch?v=-B1iBvwJcbc]1/8 scale Hub. RPM for 18x13 3-blades[/link]
- Note: My tach was incorrectly set to 2-blade mode getting 5760 RPM on 3-blades. The actual revs is 5760/3x2=3840 RPM, with an 18x13 3-blade.

[link=http://www.youtube.com/watch?v=cok9cPH4CYQ]First Flight with the 1/8 scale Hub[/link]
- Please ignore the bad landing. =(

[link=http://www.youtube.com/watch?v=fdA8_Rbj7oM]Big Prop on RC Corsair[/link]
- Same as the video in my original post (but on YouTube).