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If you are examine the details on Quadrocopter USA website for the ARF Cinstar kit you will see they are pushing a $700 power distribution kit complete with 8 ESCs and an ESC programming module. The same can be achieved for well under $400 by purchasing Turnigy Multistar OPTO 45 amp Escs and a...

I purchased the Cinestar 8 from FamousHobby Shop via AliExpress and could not be any happier. I suspect these come from the original manufacturer consigned to built these for Cinestar or FreeFly. Quality is absolutely tops. But if you dig in to the total component pricing there is not much of a...

Here is a high quality Hexacopter airframe hub in your price range..... http://www.aliexpress.com/store/product/Free-shipping-by-DHL-Fedex-6-Axis-hexacopter-Center-Plate-SET/109347_930816543.html With this you can always select some cheap aluminum tube from your local hardware store, build a...

Why would you want to remove the ratchet style...... the plane mode is the one that all Multirotor pilots use (NOT THE HELICOPTER MODE)!!!

I would recommend avoiding some of the cheaper carbon fiber airframes and holding off until you can afford the Cinestar 8 Octo basic frame that is sold on AliExpress.com..... search for octocopter and look for the one called cinestar 8 sold by FamousHobby shop in China........ But until then for...

Yes..... I am 100% satisfied and it seems to be a preferred RC radio judging by the DJI preference to use the Futaba s.bus, and the hundreds of DJI and related videos where it most frequently appears. And here is some excellent videos on how to set it up with DJI products...

That is an excellent question but it has a very elusive answer...... Each type of material has it's own natural resonant frequency with carbon fiber composite being substantially higher that wood or polymide etc. and the dimensions also play a roll. Much depends on which frequency is affecting...

The primary reason for a larger frame is to allow for more prop diameter which makes it possible to improve increase both the maximum flight time and weight of the payload. A smaller airframe forces you to select higher motor rpm and/or props with more pitch (both are less efficient) Use eCalc...

Custom Multirotors are plagued with additional challenges as the missing component is sound engineering in the design. One issue that stands out is that the motor KV seems too high.... lower rpm motors with greater torque are more efficient. The flying characteristics you describe also appear to...

Video link broken or video unavailable now....

I had similar issues with my F550 as a consequence of upsizing the motors. The flight controller cannot figure out what to do when the IMU sensors are affected by heavier vibration. As a test case simply use for Kyosho Zeal tape to isolate the IMU sensor from the airframe..... if the problem...

Some more technical data on coax but within ducting...... http://www.personal.psu.edu/faculty/c/x/cxc11/papers/Double_Ducted_Fan_0903_Detailed_Description.pdf

Yes..... several flight without issue and with a larger size Hex no issues. But always carry your Li-Po batteries onboard with you at 50% charge and carefully packed to prevent shorting, damage etc. A fire in the passenger section can be noticed and brought under control. But a fire in baggage...

Unfortunately not all risks can be controlled...... consider geese, at over 10,000 feet ASL that have brought down aircraft...... You might someday be able to put a transponder on a MR, but you can't put them on all the geese!!! http://en.wikipedia.org/wiki/Bird_strike Not saying I disagree...

Keep in mind that DJI has over 40,000 posted messages on Multirotor forums whereas the other manufacturers have very few relatively speaking. That suggests that DJI has captured the lions share of the market over and above even MultiKopter from Germany. But within those 40,000 posts you will see...

Excessive and ill-conceived regulations stifle innovation and eventually a country's economic prosperity..... Meanwhile this technology is being used freely in some other countries, now for aerial toll road traffic reporting!!! Here is the video. DETAILS: Date taken : August 6, 2013 (D-2 to...

There is a posting somewhere on MRF listing a wide range of firmware versions that someone has had the foresight to save on their hard drive....... if I can locate it I will pass it along..... I don't recall what fw I used before 5.20. The range and elevation limit feature work well...

Looking for primary cause only (not contributing causes) please select one only.

Use your RC radio system to activate pre-recorded comments on a playback device install on your MR....... eliminates the problems associated with adding another receiver and corresponding RFI or EMI issues on your MR.... and you will need a small amplifier on the MR as well to boost the audio...

quote:- "About 8 min into the flight, I noticed it was acting a little weird, the motors would get something like a power surge for a few quick times. I landed immediately, but left the motors idling. I decided to take off again real quick and just hover low just to see if the motors would surge...