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moglos's Discussions

Cable Cam effect with APM (or manual yaw control during Auto mission)

Started this discussion. Last reply by Randy Feb 22, 2016. 5 Replies

I'd like to achieve the Solo Cable Cam effect with my 3DR Y6 running APM2.6.I'd like to fly backwards beside a road and yaw the copter to film a car as it approaches and passes me. It's all quite low…Continue

Anatomy of a 200km ...crash

Started this discussion. Last reply by moglos Mar 26, 2014. 41 Replies

I've got a Cyclops EPO that I'm setting up with a view to attempting a 200km flight (lovely plane, I'm sure it's capable of it), but I've crashed it twice out of three outings, and I've got no idea…Continue

Tags: A, FBW, crash, km, 200

Flip, Crash on Maiden

Started this discussion. Last reply by moglos Nov 16, 2013. 10 Replies

Hi, I've just maidened my 3DR Y6 into the ground, and I'm not sure why. (This is my first multirotor, I've flown a trad heli and fixed wing up until now.)I got it light on the skids for a moment then…Continue

Airspeed varies by up to 50km/hr

Started this discussion. Last reply by moglos Sep 5, 2013. 1 Reply

Hi, I've just had a flight where my airspeed was way out, it was as much as 15m/s or 50km/hr less than the groundspeed on a very calm day.Can anyone help me work out if it is a leak, a sensor error,…Continue


moglos's Page

Latest Activity

moglos replied to Dronez's discussion 6-7 Hour Flight time over ocean - some questions
Oct 27, 2016
Justin M commented on moglos's blog post Anatomy of a 425km Flight
"Read your previous posts and was excited to read your new record, congrats and thanks for sharing your detailed work. "
Oct 11, 2016
Rana commented on moglos's blog post Anatomy of a 425km Flight
"Supper achievement for battery powered flight ! Pls post your .tlog and .bin files"
Sep 16, 2016
Andrew Rabbitt commented on moglos's blog post Anatomy of a 425km Flight
"Sneak preview for you guys.  This is my modelling based on a Skyfun-sized airframe (circa 8:1 L/D, I think) and a nominal motor sized for the prop chosen.  All theoretical and considers motor, propeller and airframe efficiency but not ESC…"
Sep 15, 2016

moglos commented on moglos's blog post Anatomy of a 425km Flight
"JB, no I don't, not as such. Do you know how to calculate prop efficiency from the telemetry data? Can anyone confirm my understanding of the physics is correct? Whole power train energy cost in level flight is simple, power=drag (or I guess,…"
Sep 15, 2016
JB commented on moglos's blog post Anatomy of a 425km Flight
"moglos Do you have any rough figures on prop efficiency in climb vs cruise I could use to compare? If my above statement is true regarding using gravity as propulsion, then I would have thought that there would have to be a sweet spot between…"
Sep 15, 2016

moglos commented on moglos's blog post Anatomy of a 425km Flight
"I'd be really keen to see your post, and try your idea Andrew. Thinking about JB's comments above, the aggressiveness of the climb might not matter too much. If you were only half as aggressive as ideal (say because of battery power…"
Sep 15, 2016
JB commented on moglos's blog post Anatomy of a 425km Flight
"Andrew this weekend would be very opportune!  Thanks for the info. 10-20% is considerable and worth investigating further. We are doing some range testing this weekend with a competition in 10 days time, where we are allowed to go to 1500ft,…"
Sep 15, 2016
frederic reblewski commented on moglos's blog post Anatomy of a 425km Flight
"@Andrew Rabbitt. I would be interested too to see your approach of the climb and glide.it seems you consider the gain comes from the better efficiency of the propeller in climb vs cruise. why would that be?"
Sep 15, 2016

moglos commented on moglos's blog post Anatomy of a 425km Flight
"Thanks Naish That is 7.8% more power for the same weight. That should give about 35km more range in perfect conditions, about 30km more in the conditions I experienced. 425 km + 30 = 455 km. "
Sep 15, 2016

Reto Buettner commented on moglos's blog post Anatomy of a 425km Flight
"This great achievement got an article on UAS Vision: http://www.uasvision.com/2016/09/15/400-km-flight-on-single-battery-pack/"
Sep 15, 2016
Andrew Rabbitt commented on moglos's blog post Anatomy of a 425km Flight
"JB, the answer is "it depends".  I think 10-20% extra is likely but if you're running a high powered high L/D it could be more.  One thing I want to explore with my simulation is the sensitivity to L/D.  I'll see…"
Sep 15, 2016
JB commented on moglos's blog post Anatomy of a 425km Flight
"@ Andrew Rabbit I'm very interested in any information for climb and glide long range flight. Do you have a rough indication of what sort of range improvement one can expect by flying like this, and roughly the climb pitch that should be used?…"
Sep 15, 2016
naish commented on moglos's blog post Anatomy of a 425km Flight
"Here is the official manufacturer of the GEB batteries  Model N: GEB8043125 Also we did some testing on it, and you can see few plotted graphs that Tridge did…"
Sep 15, 2016

moglos commented on moglos's blog post Anatomy of a 425km Flight
"Thanks for all the support, and suggestions. I'm keen to try a few of them. I actually didn't test half the things I would have liked to. Some because I didn't have time, others because they were too hard, and of course lots that I…"
Sep 15, 2016
Andrew Rabbitt commented on moglos's blog post Anatomy of a 425km Flight
"Congratulations Moglos!  Impressive effort. Rob L makes some good points.  There should be some ESC's out there that use active freewheeling that will drop the part-load power consumption a little more.  I don't know if the…"
Sep 14, 2016

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Heli and fixed wing

Moglos's Blog

Anatomy of a 425km Flight

Posted on September 13, 2016 at 6:32pm 35 Comments

On the weekend I did a 425km flight with my Vigilant C1.

Setting a new distance record is something I’ve been slowly working towards ever since flying 301km with the Cyclops EPO plane in 2014 



Be careful with LiPos

Posted on March 30, 2015 at 3:24am 16 Comments

This fire in my home town is suspected to have been started by a LiPo. (Though that hasn't yet been confirmed by the fire investigation authorities.)

"A neighbour, who didn’t want to be named, says Les is a member of the Nelson Model Aero Club."

Thankfully the occupants are both…


Anatomy of a 301 km Flight

Posted on May 1, 2014 at 6:30am 61 Comments

Today I flew my Cyclops EPO for an incredible 7 hours and 8 minutes, covering 301 km (301 km !!!) in one flight.

After flying my…


Anatomy of a 126 km Flight

Posted on January 28, 2014 at 3:30am 50 Comments

Last month I detailed my plans and preparation for an attempt at a 100km flight in a blog here.

Well yesterday the weather was ideal and my preparations (nearly) complete so I went for it and achieved a flight distance of 126km in a time of 2 hr 46 min 40 sec.

I can't attach my log file here because it's too big. It's 15MB and there's a 7MB limit. Any ideas how I…


Comment Wall (6 comments)

At 7:39pm on April 23, 2013, Franco Marinelli said…

hi moglos, sorry but I dont have it! 

At 10:45am on July 1, 2013, John Rankin said…

Hi Franco,

I have not been on the site for a while as all of our work is commercial but I do follow what everybody is doing on a regular basis.  Great job everyone you are doing amazing things with the tools that you have.  Although I am the owner of the company I am not the only one in control and the talk in the office is to stop discussing the work we are doing.  There is a lot of competition in this field which we believe is going to expand rapidly in the next few years and we don't want to sell the farm.  To others that have inquired about the software we are using, it is a beta software that is not yet released.  It is not owned by my company; we are simply the beta testers and to my knowledge the only users in North America.  As for the Maja I think I can give you some advice on the airframe.  It is a plane with excellent performance as a UAV platform in most conditions.  It is very stable and flies beautiful straight, flat lines collecting very usable photography. The Maja does have a terrible tendency to stall when banking with a tail wind above 20 kph .  The minimum throttle must be set high to avoid this problem; we keep ours at 50%.  Another problem with the plane is its fragility.  Landing in tall grass or brush can damage the soft foam by cutting into it.  We wish it were made of EPO (Bormatec please listen to us!).  The elevator, rudder, and ailerons are particularly sensitive to the grass shredding them. We have adjusted to this by adding carbon fiber to those surfaces and have since reduced the problem although those surfaces still tend to tear from the frame at the hinge.  Add some Beacon's Foam Tac glue (the best glue we have found on foam planes, bar none) at the hinge and it reduces the issue.  Any hard landing with either the tail or nose first will invariably result in damage.  In our testing we have literally broken three Maja completely in half and one into three pieces.  We have modified the plane by cutting the bottom of the plane in half (with a hot wire) and inserting two carbon fiber rods the full length of the plane on the left and right and then gluing (with Beacon's Foam Tac) the two pieces back together.  Hard landings are no longer an issue and we have not had a problem since, even if we smash into the ground.  The motor mount on the back is also an issue.  We have had the entire motor mount rudder assembly rip off twice while in flight probably due to our high AUW of 3.5 kg.  To fix the mount we cut the mount in half and insert two carbon fiber rods on the left and right, glue it back together and then mount the motor plate with two large nylon bolts directly into the carbon fiber rods.  For extra security we then use 1/2" Velcro straps to hold the entire rudder assembly to the body.  Those white plastic pins often break and are not sturdy enough for our uses.  As for the settings we started with the Conservation Drone's


settings and then did a few modifications as needed.  If you are going to fly with a high AUW ensure that you have a powerful enough motor, esc, prop combo and complete all the re-enforcements of the body or you will be in trouble.  The plane ALWAYS dips precariously close to the ground on launch so you will need a very high launch area.  We hand launch from a pad on top of our field truck and skim the ground on every take off.  I hope this information helps anyone out there and if you have any other questions please feel free to ask. 


At 12:46pm on January 5, 2014, Vince Lang said…

Dear Moglos, 

I've just read Your 100km attempt. I was impressed by the research You did on motor prop confogs. My Maja is on the way from Germany, but I have not yet ordered any electric parts. Im not willing to attempt anything like You, just want to set up a system for FPV maybe later add a PS camera on the plane. Could You give me a good starting point for motor/prop setup: I would appreciate any help.



At 12:15am on January 6, 2014, Vince Lang said…

Hi Moglos,

thanks for the fast reply, I was thinking about that motor too, good to know I wasn't that off with my concept. Im sending some good weather from Europe for your attempt, keep us posted :) Good luck! 

At 3:51pm on July 16, 2014, Al Creigh said…

Hey moglos my email is al.creigh@yahoo.com could you send me your config file for your cyclops?

Also I was wondering if you knew anything about the cyclops C?

At 8:34am on April 11, 2016, Anson Li said…

I'd like to use APM to plan out a flight as well.

Would you mind sharing your radio setup?
I'm using the 9XR with a Frsky XJT module. Will that work with APM 2.6, without any additional telemetry radios like the Sik or 3DR radios that connect to computer?

Thanks a lot!

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