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IMHO - based on what I have read here from others as well as some personal longer distance flying experience, i.e., 550 yard fairways etc. 1) Best to always have GPS mode active when flying at a distance as it gives you several safe return options that are otherwise not available to you such as...

Any mechanical or structural engineer will tell you that the tube configuration is recognized as the optimum configuration to maximize strength to weight ratio of the motor arms. While a tear shaped tube will create less drag in it optimum orientation to wind, your MR orientation changes which...

Using MRs for parcel delivery might seem ridiculous right now.... but who knows where this technology will be in a few years...... One thing for sure is that a potential business incentive like that helps to drive further development in the same direction and it is an energy efficient solution...

Not true.... the extended shaft provide no value for MR flying. You will see that most motors sold for MRs do not have the extended shaft which is simply parasitic weight. Keep in mind that Sunnysky motors are an excellent choice. Much depends on your current and future plans for MR AUW. Also...

All that work since 08-06-2013 with your new Mantis Octo Hybrid! Excellent aerial video from my perspective. So are you still using the 14 inch props with 21lb AUW?

SMP.... I am having 2nd thoughts about the retractable landing gear concept although they sure look cool. Still assessing the overall relative cost, weight, availability and other factors. Retracts must be strong enough to handle the AUW and protect the camera yet not shift the CoG up and down...

Laws of Physics favor the pancake style motor for weight efficiency when it comes to increasing torque. Here is one that I use a lot.... http://www.hobbyking.com/hobbyking/store/__26962__Turnigy_Multistar_4830_420Kv_22Pole_Multi_Rotor_Outrunner.html I have 15 of these and no issues so far...

Thanks all for the input......both look great but the Droidworx takes the lead on fast assembly/disassembly.....And agreed.... more competition needed in this department. Seems that Cinestar offers their MR airframes at a really low price, then skyjacks the pilot when it comes to buying their...

There are many Youtube videos on how to do SimonK firmware updates to the Turnigy Multistar Opto ESCs..... you just have to buy the kit and download the free software/firmware. eCalc does not accomodate the new and more efficient pancake style motors and the matched carbon fiber paddle...

I am thinking of buying the Droidworx retractable landing gear but for my Cinestar 8..... should have bought the Droidworx MR apparently. I don't like the hanging tripod landing gear concept at all $$$$ and too much weight. In any case can someone in this are suggest where I can buy this item...

Looking for something similar to the S800 retracts but a bit more robust to handle the weight of a Cinestar Octo c/w SLR camera. I prefer this type or retract over that hanging/rotating tripod that Cinestar offers. Anyone have any suggestions?

All these batteries have been sold now with the exception of two remaining and brand new 5S batteries........ never used!!!! (last row in the table above).

Your RC radio choice looks favorable to me. Bart is correct re: Nanotech batteries - 1st or 2nd best available on the market at this time. eCalc for Multirotor allows you to specifically select battery C rating, number of cells, maH capacity etc. but not the option to select according to...

The Futaba RC systems seem to have a stronger future migration path with DJI products not just because of s.bus. The Futaba T8FG Super is actually a 14 channel Tx but comes with an 8 channel Rx.... However the Rx is pricey when compared to the Frysky TFR8SB which is 100% equivalent to the Futaba...

As Kloner says.... buy the Futaba T8FG Super....... and if you have an opportunity to buy it without the R6208SB....... buy instead.... the Frysky TFR8SB 8 channel receiver for much less cost as it is 100% equivalent to the one provided by Futaba. And should you ever decide to move up to the DJI...

Welcome to MRF and thanks for the head's up on Quadrocopters.com. I dropped by there offices a couple of times but never bought from them.

Droider.... I had similar issues with the WKM where the switchover to/from gimbal control made basic and attitude gains go weird and/or activation of RTH caused the MR to buck like a bronco. UAVProducts provided me with the info I needed to resolve these issues, i.e., I can't quite recall but...

Zaxxon..... When upsizing stock motors to higher power, the motor and prop balancing becomes far more critical..... The DJI IMU sensors are renowned for being overly sensitive to vibration issues leading to a wide range of flight control problems including flyaways! Just my opinion based on...

http://ca.news.yahoo.com/video/world-first-electric-helicopter-takes-160404518.html

Is it safe to assume that the issues you have experienced are related to an attempt to use the DJI A2 gimbal functions? It is my intent to use the A2 for flight control without going near the built-in gimbal functions, in which case I am hoping all FC functions will work properly. Please advise...