ArduCopter (traditional heli) user group


ArduCopter (traditional heli) user group

User group for those flying ArduCopter on traditional helicopter platforms

Members: 229
Latest Activity: 3 hours ago

Discussion Forum

Does the GPS (and compass) need to be entirely out from under the main blades?

Started by Thor Larsen. Last reply by John Bond May 18. 7 Replies

Hello.  I am beginning the process of taking a Century Swift 16 (a bit vintage but light and strong - about 550 rotor diameter) and converting it, with a Pixhawk, to an autonomous machine.  I feel…Continue

Tags: gps, heli

APM + X-Plane + Trad Heli Sim ?

Started by emre ayvaz Mar 31. 0 Replies

Hi Guys,I need to be worked  APM, X-Plane and Trad Heli together. But I cant.So the problem is, All of them are connected among each other But Calibration is not well. So When I send a command it…Continue

Setting of extgyro

Started by nobuyuki asai. Last reply by nobuyuki asai Mar 29. 2 Replies

I'm nob.I post the first time.I installed apm2.5 to the trad-heli.About tail-control I want to use avcs mode, but what do I set for apm?I don't know how to use avcs mode,So I equip head-lock gyro…Continue

Trex 450 with APM2.5

Started by Kun-Wei. Last reply by emre ayvaz Mar 23. 5 Replies

Hi all, I have a helicopter with APM2.5. I set the board as the wiki. …Continue

Comment Wall


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Comment by Geoff Levy on January 21, 2014 at 3:19pm

This is my Heli actualy flying (not autonomous)


Comment by Geoff Levy on January 21, 2014 at 3:07pm

I have been watching this project for the past few years. I am waiting for a stable release for my UAV platform.

Here is a pic from the manufacture, not sure where mine are.

  • Length (m): 2.63
  • Height (m): 0.711
  • Main rotor diameter (m): 2.146
  • Tail rotor diameter (m): 0.403
  • Empty weight (kg): 16.5
  • Payload (kg): 13
  • Max take-off weight (kg): 35
  • Max speed (km/h): 90
  • Cruise speed (km/h): 65
  • Rate of climb (m/s): 4
  • Ceiling (km): 2.5
  • Power plant: 80 cc air cooled twin cylinder gasoline engine
  • Fuel (L): 10
  • Fuel consumption (L/h): 4
  • Endurance (min): 120
  • Operating temperature (°C): -20 to 50
Comment by kevin zhou on January 21, 2014 at 3:04pm

@R_Lefebvre: Thanks Rob, as you said 10kg is much more reasonable, do you have some suggestion which heli frame I can use for this 10kg payload. we can use it to make trial first. how much could it cost ?

Comment by Rob_Lefebvre on January 21, 2014 at 2:51pm

Nate, we need to talk. ;)

that Rotor Buzz... looks like a modified Yamaha RMax?

Comment by flyingdragon on January 21, 2014 at 2:46pm

I would love to see an RC helicopter flying 2.5 hours that  big and can carry 30 KG plus it's load will be real hack!

but again the bigger the helicopter is the bigger the blades and the components,

I had Bergen helicopter few years a go I build it for 10 days, here is it, but alas my friend crashed before I even tried to do the first hover:)

Comment by Nate Miller on January 21, 2014 at 2:42pm

We did our work on APM 2.0 - 2.5. Haven't gotten my hands on a 2.6 yet, but they're all nearly the same.

The Rotor Buzz comes with a really low quality autopilot. If you put an APM on it as far as I know that'll be the first.

Comment by kevin zhou on January 21, 2014 at 2:33pm

Thanks all the experience from your guys. 

@Nate Miller:  So you have make all the function you mention below ? quite commercialized stuffs. Do you make these optimazations base on APM 2.6 or base on pixhawk? I am interesting in pixhawk for it realtime system and hardware recovery design, but I have no idea these already implemented or just a plan and hardware ready for it.  Roto Buzz looks really cool, but the price is really hot. I just wondering if they implemented it by APM 2.6 hardware ?

Comment by David Boulanger on January 21, 2014 at 12:19pm

Nate,  I think the latest code has come along way.  I am running 3.0.1 and have had no problems with it.  Flying 1 meter off the ground in loiter without enabling the sonar is no problem.  If I did it for 10 minutes then yes the barometer would most likely give a false altitude.  I think version 2.9 was the initial breakthrough in TRAD HELI.  Try the new versions I think you will be impressed.  My APM sits below the heli frame and my only real issue is my vibes on the Y-axis are about +-.2.  I think it's just a little to far below the center of gravity. I have never seen ground effect turbulence disrupt a extremely slow landing in any of the automodes.


David Boulanger

Comment by Nate Miller on January 21, 2014 at 11:55am

Rob: PM me and I'll fill you in on my experience with my Bergen machine.

David: The Arducopter code, while supportive of traditional helis, has an awful lot of optimizations for multirotors, and when I branched my code at ArduCotper 2.8.1, was full of bugs. I had to re-do how the CPPM mixing was done for swash plates so we could handle an RC multiplexer fail safe, add libraries for rotor speed feedback and camera interface, add a few control laws to govern the rotor speed for gasoline engines, add safety features to kill the gas engine (ground the magneto) in even of electrical system failure, re-do the gimbal library to stabilize better and support more intuitive user interfacing from the GS, adjust the acro mode control laws to account for a flybar, adjust the heading control laws to account for an external gyro so that, in the even of an autopilot failure, the heli can be easily hand flown, completely redo the embedded side of the mission scripting (there were so many bugs there that only navigation command mission items would function properly), and others that I probably don't recall at the moment. I haven't looked at any code since 2.8.1, so it may be better now. There is also an issue with having the baro beneath the rotor blades. Ground effect causes the baro to get some strange readings on takeoff and landing. I never figured out a good fix to that one.

Comment by Rob_Lefebvre on January 21, 2014 at 11:41am

All: These discussions really don't get much attention here.  Please try to discuss things on the new forum:

Kevin Zhou:  Hard to say if it's mature enough, because nobody has done it, but I like to think so.  There really have not been any crash-o-matic bugs for some time.  Most crashes are user error, or hardware failure.

Nitro would not be a good fuel choice.  You should use gasoline.  But 30kg payload means you have a VERY large helicopter.  I'm not aware of anything affordable.  10kg is much more reasonable.

flyingdragon: 2 hours is completely possible.  It's been done on electric even.  World record is 2.5 hours.  With gasoline, it's actually pretty easy.

How do you say there is no firmware available?  You guys are aware Arducopter can fly a heli in full auto, right?

Nate: I'd be interested to hear more about your experiences with Bergen.

Same comment on the code.  A year of re-writing?  This is here now.


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