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Old Oct 27, 2012, 08:18 PM
PhysicsDude55 is offline
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Getting Myself and My Dad Back Into RC Planes

Ok, small background here, I graduated a few years ago with a bachelors in Electrical Engineering and Physics, and am currently emplyed as a low voltage control systems engineer. I have some modeling and basic RC experience, and lots of motorsports (cars, trucks, motorcycles, boats) experience, so I'm quick to learn the details of RC planes. Don't be afraid to throw out complicated terms and jargon.

My dad used to be very much into aviation and RC planes, but hasn't done much in the hobby for about 20 years. I thought it would be really cool to buy a nice RC plane for him for christmas that we can fly together. I have my heart set on a multi-engine warbird. The first model me and my brother build with my dad when we were young was a B-17.

I don't mind buying a RTF or ARF kit, but I'd rather build a kit and choose my own motor/battery set-up. I plan on buying 2-3 more planes (probably 1 every christmas), so I want to get a battery and TX that I can use on several different platforms. I don't really want to get a "trainer" plane, since my dad will do most of the flying, and he's very experienced, and I want something that I will continue to fly, not something that will collect dust after my next build.

I have my eye set on the B-25 kit from HobbyKing:
since I want something with flaps, retracts, and bomb bay, and I suspect it will fly pretty easily. Its $99 for the KIT, or I can get a ARF (minus batteries & RX/TX) for ~$300.

I've put some preliminary choices together for a complete package with the KIT and I think I can save quite a bit of money, and build a better plane with the KIT over the ARF version, but I'm nervous that I'm headed in the wrong direction.

My EE gut tells me to get higher voltage batteries (4s, 5s, or 6s), and powerful motors, but I'm not sure if I'm headed in the right direction with this train of thought. I'm thinking I want larger batteries (3300Mah or so) with larger motors for more power and longer flight times. But maybe that will just weigh too much and I'm better off with something lighter? One reason I'm thinking 5s or 6s batteries is I want to do an EDF build in the future, and it seems to me high power EDF motors often take higher voltages.

I'm also not sure if more powerful motors (700-850W range) are any good for this aircraft, since it comes with 3 blade propellers, and I'm not sure where to source higher pitch ones to make use of the extra power, and I don't want to weigh it down to make it hard to land. I'm just the kind of guy who wants the biggest/baddest/fastest thing. Sometimes I need to be reminded to take a chill pill.

If anyone actually read my whole post, I would really appreciate some pointers, or motor suggestions, or if a twin engine warbird is too ambitious, or that there is no advantage of doing a 4s, 5s, or 6s system over a 3s. My budget is flexible, but I was planning on spending $400. Thank you!
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Last edited by PhysicsDude55; Oct 27, 2012 at 08:24 PM.
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