RE: NitroPlanes - MQ-9 REAPER
I have both the Predator 63" and the Reaper 98" models. I am building both simultaneously. As these are my first "push" planes, I am not sure which electronics and motor combination to outfit either model. Are there certain motors and ESC's designed for "push" thrust? Or can I simply reverse the polarity on the motor? Will this ruin the ESC? Or is it as simple as buying an inverted prop?
I intend to outfit ($) the Predator first, fly it, then sink ($$$) the majority of my resourses into the larger Reaper. With this in mind, I went "economy" and purchased a Exceed 6 channel G Radio (Nitro) and a 7 channel Receiver; An Esky brushless 25A ESC (Nitro); an EON Xlit 3s 11.1v 2100mah Lipo(Tower Hobbies) battery; Four HS 3004 servo's; and Alpha 400 (3500kv) brushless motor (Nitro). I am concerned that the motor might tax the ESC beyond its limits, although specs say I am just inside the amperage draw. What size prop should I use if I can get by with this electronic package?
Any knowledgable advise on the electronic, motor and prop combination for the Reaper is certainly welcome. I will be buying another Radio (Futuba's new S Bus system, etc.) and will be peaking the limits in battery (4000mah) for the sole purpose of keeping this plane aloft as looong as possible.
The longer the better, and the sky is the limit. I am obviously not looking for a power consuming combination, but quite the opposite...still, I must be able to get this 98" Reaper off the runway and as high as a speck... Again, I welcome any knowledgable advise.
Ok, I have studied both Papa Jacks threads, Predator & Reaper and found several other sourses of info. I found out that that the 3500kv motor was too fast to slap on the Predator, otherwise I was on track. Yet, could I not put in a 3>1 gearbox in place of the 1" nylon spacers and then run the prop at a more resonable 1166kv?
Furthermore, I have now decided to purchase a Spectrum TX RX for the Reaper. Thanks for that advise...
I will be recording and posting the progress during construction, and will video the maiden flights of both planes. I plan on experimenting along the way (as with the gearbox). Anyone following this thread, please send me suggestions. And if you see an obvious errror on my part (like the gearbox experiment) Please inform me!