![]() 2208-1250kv Motors (Probably Racerstar as they're very affordable at AUD8 each) - These perform well with an 8038 prop on 3S but if my weight goes up too much there's going to be problems, but ecalc is indicating that prop choice will be most critical.Metal Gear servo (Corona 919 or similar based on RCGroups Trifect thread this is more durable). ![]() So here here's the rough list of bits I'm going to be trying to use. My biggest challenge is to avoid scope-creep and shaping and changing plans on the fly because somethings "on sale" and then ending up with a hodgepodge of bits that work but don't quite come together (like my 250 build). This is going to be a slow build and this post basically serves as an anchor for the ideas and research and then ultimately the shopping and the build. The built weight of these with an GoPro or Mobius on the nose seems to be around the 600g, and some people have got AUWs well past 1.5kg in the air. There's a lot of information on RCGoups and Youtube about some of the design pitfalls and tips and techniques for successful construction. It's got a pretty robust design and the "regular" price of the frame is under AUD50. The Quantum Trifecta sold through Hobbyking is a circa 295mm Tri-copter that folds down pretty small and can run up to 8" propellers. Instead of doing something sensible like building a folding 450 on any one of the dozens of frames I've elected to give myself a different challenge. Measurably under 2kg AUW (say 1.8kg MAX) App support to manage extended functions via iPhone/Android Phone (i.e. Portable design when not in use/Travel friendly. ~20 minutes flight-time with 4000mah battery (3S or 4S) Control functions/modes including Altitude and Position Holds. Carry GoPro or Sony Actioncam in a stabilised Gimbal (up to 200g of Camera) With the basic DJI Phantom3 available for under AUD700 at the moment and numerous competent big platforms like the Hubsan X4 Pro and Xiaomi all being in the same price area complete with camera I figure I need to be built and flying for under AUD350 otherwise it's a bit of an "own goal". Initially I had thought of building a TBS Discovery/Reptile/Alien style 450-550mm design and setting it up for my ultimate use, carting GoPro and GoPro like cameras around as a bit of a slow-moving camera truck type of thing. Not to mention it's getting pretty beat up by my attempts at learning to fly! I've started the thoughts on building my second multi-rotor as I've struck the packaging limitations with my Cheap250 build.
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