wind junkie
Posts: 982
Joined: 11/16/2002
From: N. Syracuse,
NY, USA
Status: offline
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A BME 105? Wow, I'd love to see that! Isn't that more than a pound heavier than a DA 50?
Since I've never actually seen one fly yet in person, and I don't even know how mine balances with the DA 50 on it, I can only speculate, but I imagine you'd need tailweight (1/3 lb?) even if you moved the battery into the tail. Did you see the model airplane news article with the DA50?
http://www.rcguys.com/RC%20Guys%20Pitts%20-%20Click%20Trip%20-%20Model%20Airplane%20News.htm
Mine should be around 15 lbs with the DA 50. I've got a lot of aftermarket parts and hardware to get that weight (carbon tailwheel, LG, light servos, Lipos all around). I figure that's a good 3D weight for a DA 50. I've also got made new tail parts (larger surfaces, counterbalanced rudder, and extended ailerons into prop blast) to allow 3D control. Not sure if 3D is your goal too, but it added several weeks of build time for me.
The ARC is a very light plane, and I know you'd need to reinforce the front end and probably the LG mount area for a bigger motor. It may end up ruining the reputation of this plane as a "biplane floater", but who knows for sure. I would think your combo would still be lighter than the 1/3 scale GP Pitts that everyone likes and is ~18 lbs.
If you've already got the motor and hardware and don't mind kit bashing, I'd say go for it. Either the ARF or ARC is a good value, and if you feel comfortable with modifying bigger birds of this size, and know how to handle extra power, it should be a really fun ride. But, as you must know, be prepared to land her more hot as you would expect for heavier loaded birds.
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RE: Andy Sheber's Pitts ARF by RC Guys - 
