ORIGINAL: rideon67
I was afraid of the lack of vertical with a 120. The published numbers tend to be fiction in most cases, but these area to weight ratio numbers appear to have quite a bit of leeway for a great wing loading. Did you try running your 120 on 30% fuel?
Also, how did you get "crow"? Separate flaps and ailerons?
Thanks for the tip on landing gear. I'll replace the wires to start with. Any other weak spots?
Let's see 30% helo fuel will soon be over $30/gallon, so it won't take too many gallons the pay for a gas engine or a cheap glow engine that will run on either FAI or 5%nitro, at less than half the price of 30%. Don't know what's going on with Nitro here, but price is skyrocketing to make the higher nitro fuel way too expensive for those who like to fly allot.
I think if you beef up the firewall, one of the less expensice gas 26cc engines would fly the airplane pretty well. The ST2300 is being sold by Tower for $139.99 right now, so it is cheap and reliable and runs great on 5% nitro. That engine with an APC 17X6 or 18X6W prop will give nearly unlimited vertical. Since you won't be flying at full throttle much, since throttle management will be paramount, it doesn't burn too much more than the 120 4S.
As far as the crow set up, if you are using a 9C, go to the Futaba website, questions and answers
http://www.futaba-rc.com/faq/faq-9c.html and look up the crow set up, with separate elevator servos. If you follow that, it is pretty simple, if you really understand the radio. I have the same setups on my GB Wildstik 120's and will also use it on my new GUCD, when it arrives from Tower this week.
Well, gotta get back to my class, don't want students waiting on me. Good luck, Mike Boyd