robb_h
Posts: 117
Joined: 12/1/2002
From: WARREN,
PA, USA
Status: offline
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FR,
Both of your engines probably provide more power than my .15 FP, and should be OK. However, I'd use the extra power only for takeoffs and climbs. I'd also use the heavier of the two, and watch your C.G. closely. I have my engine as far out as it will go, the radio equipment crammed in the fuel tank compartment, and I still had to add quite a bit of lead to the nose. The plane still came out light, and flies great.
The plane easily loops, and spins around on itself with the rudder. However, that's about it, given the polyhedral. Mine was built exactly per the instructions, and I've had no problems. Even throwing it around on full throws didn't seem to faze it at all. If I recall, the people who reinforced their wings were using like .40's. This is ridiculous, and defeats the purpose of the plane. Buy a .40 size trainer if you have a .40.
As far as ROG'ing goes, I'd start in no wind (or very light), and work your way up. If in doubt, don't fly it. Our field is almost always windy during the day, so I fly it after 6 P.M. Make sure it's pointed directly into the wind, and it will takeoff straight as an arrow. You might not have enough speed and control if you try taking off in a crosswind. If hand launching, have someone else do it the first couple of times. It's a big plane, and is near the upper limits of something I'm comfortable with hand launching. The ROG'ing is much safer IMHO.
I've built close to 40 planes, and I've never seen a more complicated building sequence for such a simple plane. I counted close to 270 steps!! It's not something you're going to build in a weekend. Take your time, and it'll turn out fine.
Regards,
Robb
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anyone flying a Dynaflite Butterfly? - 
