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Official Black Horse 2425mm Antonov An-2 ARF Thread

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  • Official Black Horse 2425mm Antonov An-2 ARF Thread

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    Antonov An-2 2425mm (95.47") Wingspan from Black Horse - Balsa Wood ARF - BHM1015-001


    The Antonov An-2 biplane is a Soviet aircraft produced from 1947 to 2001, and is a popular choice for military and civilian operators worldwide. Famous for its ability to take off and land from difficult runways, its durable airframe and impressive payload capacity are ideal for forestry, agriculture and a variety of other purposes. Variants of the An-2 include crop-dusters, water-bombers, flying ambulances, seaplanes and lightly armed combat models.

    The model is scaled to approximately 1:5 and attention was paid to a true to original appearance and best flight characteristics. The model can be operated using an electric power system or with an internal combustion engine about 30-35cc displacement.
    Factory Weathered Printing

    The printing on this model has a realistic weathering complete with rivet and panel line detail that elevates the model to a whole new level of scale appeal.
    Naca Airfoil Design For Improved Airflow

    The Antonov An-2 utilizes a Naca airfoil design which maximizes airflow above and below each wing for increased lift and performance.
    Electric Power

    The Antonov An-2 uses an electric power recommendation with ample room for your electronics but can accept a gas power setup as well.
    Large Wingspan

    The impressive 95.4" wingspan offers impressive presence both in the air and on the ground.
    Features:
    • High level of prefabrication right out of the box
    • Lightweight, strong, laser cut balsa and plywood construction
    • Panel lines and details printed directly onto the pre-applied, high quality covering
    • Recessed hinges on all control surfaces
    • Pre-drilled hinge mounting holes
    • Heavy-duty pin hinges on all control surfaces
    • Large easy access fuel tank/battery/servo access hatches with spring loaded latches
    • Painted and detailed cockpit, pilot and interior included
    • Fiberglass control horns with ball link connector
    • Comprehensive control and fitting accessories included
    • Four-piece, plug-in wings simplify transportation and assembly
    • Fiberglass cowl
    • Mounts for both electric and gas power options included
    Includes:
    • Black Horse Antonov An-2 2425mm (95.47") Wingspan - ARF
    • Instruction manual
    Requires (Electric):Requires (Gas):
    • Engine: 30-35cc gas
    • Gas Propeller: 25x10.5
    Customer Note
    Black Horse ARF models are constructed out of balsa wood and plywood. These are not foam models. The assembly of balsa wood ARF aircraft requires basic model building skills including the installation of servos, ESC, and motor (or gas engine). Product Specifications:

    AGE LEVEL :14 and up
    SKILL LEVEL :intermediate
    BUILD TIME :6+ hours
    Model Scale 1:5.5 Scale
    Wingspan 2425mm / 95.4in
    Length 1710mm / 67.3in
    Weight 9600g / 21.1lbs
    CG (Center of Gravity) Refer to manual
    Wing Area 130.12 dm2
    Wing Loading 73.78 g/dm2
    Power System 180Kv Brushless Outrunner Motor or 30-35cc 2 or 4-stroke (required)
    Electronic Speed Control HV 120A (required for electric)
    Propeller / EDF 24x14 for electric, 25x10.5 for gas (required)
    Servos
    • Electric - 10x 45g standard (required) - we recommend HRC32645S
    Landing Gear Fixed
    Required Battery TWO 6 Cell 22.2V 5000-5500 mAh LiPo Batteries with EC5 connector in series (required for electric) and 2x 2S 2000-3000mAh LiPo or LiFe receiver packs
    Required Radio 12+ Channel (required)
    Ailerons Yes
    Elevator Yes
    Rudder Yes
    Flaps Yes
    Lights No
    Hinge Type Nylon Heavy Duty pin hinges
    Material Balsa and plywood
    Skill Level Intermediate
    Build Time 6+ Hours
    Recommended Environment Outdoors
    My YouTube RC videos:
    https://www.youtube.com/@toddbreda

  • #2
    Has anyone built this yet? I just got this for my 13 year old son and I got the P-40. I'm going back and forth with Motion to find the correct prop. The MFG recommended motor and prop are different than what Motion is recommending etc... I'll have to do some serious bench testing. I got stuck with a $17 electric prop they recommended for the P-40 in error. :-(

    Comment


    • #3
      So you did not get the 24 X 14 prop? Did you get the Castle 160 with fan? The motor pulls 140 amp peak. Of course, 120 max ESC is probably fine since the weight is only 21 lbs, but I like to size to the motor in case I use them on another plane in the future.

      Comment


      • #4
        Originally posted by tclaridge View Post
        So you did not get the 24 X 14 prop? Did you get the Castle 160 with fan? The motor pulls 140 amp peak. Of course, 120 max ESC is probably fine since the weight is only 21 lbs, but I like to size to the motor in case I use them on another plane in the future.
        I'm finally building this. Lots of issues. The motor doesn't really fit well into the motor mount. I was able to CAD up a motor mounting template and grid down 1.59mm of the motor mount to fit it nearly perfect. I'm printing it now to drill it and mount the motor and do an draw/amp test to see if I'll need to order the 200a ESC. Also need to mount the cowl absolutely perfect and barely on the edge of the fuse. Also I needed to print a 6mm bushing for the wheels to fit. I might just print some custom ones out of foaming TPU when I have time. I'll probably also use a 3D printed cowl from my Corsair model from 3DLP. It looks great in the cowl.

        I have the recommended 160a ESC.

        I have the Biela 20 x 14 - 4 Blade Prop that I just drilled. I'm hoping to get the motor assembled and do a bench test tonight, so I can know if I need to order a new ESC for an event in a week.

        Comment


        • #5
          I had to order the Spektrum 200a ESC. I was peaking at 160+ amps with throttle jumps and sustained 120-135 at 100% throttle. Probably could have flown it at 70% throttle and probably could have gotten away with a 160a but now I have a 200a for this monster! It's my son's plane and he likes to fly full throttle. This motor is so powerful, it's insane. Maybe I'll find a use for the 130a recommended ESC from Motion. From now on, I'm not going to just trust their recommendations. Yes, I upgraded to a 4 blade, which increases mass, but it's quite smaller and a 130 is just way too close.

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          • #6
            The manual lists a 35 CC for gas, motion RC recommends 65-100CC! A 35 CC seems way too small for a 95"+ bipe.

            @Davids: Did you weigh it yet? Are you running 12S or 10S? and what capacity?

            Comment


            • #7
              We did use a 4 blade prop, so our amp draw will increase, no doubt with the increased mass. Mostly was around 120-135a draw at near full throttle, but from dead stop to full it peacked at 165a, so I didn't want to lose a plane over that, so I bought the 200a avian esc from spektrum, plus it has a beefy BEC built in.

              We will run 12s x 5000mah packs, to start. I had to majorly dremel and cut away at the battery tray to get everything to fit. The motor motion recommends is the GP-60 and it's not a good fit. I had to CAD a solutoin and 3d print a template to align the motor properly and then dremel and file away 1-2mm of the mounting holes on the motor to get it to fit properly. There's not much room for everything but I was able to get everything to fit. I'll post pics later.

              We are close to the maiden. Unfortunately, the wing struts do NOT fit, not even close. Black Horse is supposed to be making me new ones and shipping them from Vietnam. I can't wait that long, so I CAD and designed my own and 3d printed them out of CF PETG and they work and look great.

              All that's left on the ground is to CG and trim the control surfaces. Due to the large hinge gaps, it's real tough to understand where the control surfaces should be at neutral. I'm just going to align the flaps up to the fuse lines and then match them with the ailerons.

              Hoping to maiden this within the next week! Will keep you posted! If it flies well, I'll be 3d printing some MPX holeders/adapters so that the wings will be push-on connectors. Annoying to have to feed servo wires through the fuse for 4 wings! Will probably save at least 10 minutes of assembly time at the field.

              Thank goodness for 3d printers.

              Comment


              • #8

                Here is my wing strut printed in CF PETG. Stock struts are 37g, this is 47g, negligible and super stiff but still provides slight flex. They should be more than adequate.

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                • #9
                  I've attached the STL for the brace. 2 identical prints will work, or if you are OCD about the plate side of the print facing the outer or inner of the plane, you can flip on X or Y axis in the slicer.
                  Attached Files

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                  • #10
                    So it turns out that the control rod and servo arm geometry shown in the manual is horrible. Im redoing all of it and still trying to keep the wing side hidden. The servo arms should favor a slight forward neutral position and not a slight aft as shown in the manual. This means you will need about 100mm control rods and not 80mm. Waiting for some from Amazon tomorrow and then I should be set. MotionRC support sent me photos and videos of other BH planes and he bent his rods to keep them in the center of the hole as well and it works fine. Much less slop with the new orientation and bend. The stuffed setup is to simply not hide the rods on the wing side and put them out the door covers like most planes.

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                    • #11
                      Great, thx for the info and keep us posted. A great unique subject.

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                      • #12
                        We have successfully flown this AN-2. We got 2 flights so far. The plane flies more easily than expected. Only some minor trim needed. My 14 year old son is the pilot. He said it was quite boring to fly, which I guess was a good thing. He also almost always exclusively flies EDF's the last few months. The first flight was a quick 2 lap shakedown. We set the plane up with slightly more throws than suggested, as we always do that, to make sure we don't get in a position where we don't have enough elevator authority etc...

                        The only major knock is that the landing gear is so stiff that it's hard to avoid a bounce on landing. I'm not sure what can be done about that. The 2nd flight, he landed it quite smooth with only a very minor boune of a few inches.

                        We did the stock CG. I used an angle sensor to get the plane level with about half a degree. I zip tied a 2200 3s battery up inside the tail wheel assembly to achieve this, I think it was about 170g. I custom 3d printed some modular battery trays designed specifically for two 5000 packs. We will be using 7000 packs next. I will attempt to design and print those mounts to achieve the CG without the battery in the rear.



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