This is an exceptionally well designed and well built ARF.
The photo on the box doesn't do this airplane justice, it's really a sharp looking airplane having clean lines and precision fitting componernts. The engine requirements are conservative in my opinion, as you will see in my airplane. The airframe is rock solid and will support more powerful engines. It will mandate some precautions if you go the bigger engine route though. My Corby Starlet is equiped with an OS 1.20 AX engine and it fits perfectly!
First and foremost is, the wing and firewall really need to be fiberglassed to handle the additional stress of the high-powered engine. Make sure you remove the covering before you glass the joint as depicted in the photo. The remainder of the assembly can be completed per the manual.
The 1.20 AX fits perfectly and the engine cowling completely encloses the massive engine. This setup balances the Corby perfectly on the recommended CG. So, no tail weight will be needed. It's imparative that the CG and control surfaces be set per the manual at least for the first few flights. This airplane is very responsive and twitchy if its not set up correctly. I would highly recommend using exponential, lots of exponential! I set mine up with -50% on the elevator and -30% on the others. This will make it smooth and predictable to fly.
After I get some stick-time with it, I will complete the graphics.
I flew the Corby twice today, and it's a BEAST! The manual wasn't lying
about using lots of EXPONENTIAL. I used 30% and it was barely enough. BUT, it flew very
good inspite the short coupling. The AX effortlessly lifted the airplane off the ground at
1/3rd throttle. It took some trim but it wasn't very far off. At full throttle it's very
fast, extremely agile, and WILD. I think I'll re-set the CG a little more forward and take
some of the twitchy elevator out... it's really HOT!!
I might note here, that this airplane is
not for beginners or even intermediate flyers. This is a very agile
and responsive airplane and one could get into trouble real fast if you lack extensive
stick-time. HOWEVER, in the hands of a skilled pilot this airplane will perform magic in
the sky unlike anything you've ever flown!