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Official Freewing B-2 Spirit Bomber 86" Twin 70mm EDF Jet

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  • Hi Balsa Bob,

    I operate off hard surface only. No departures from the “straight” has been my experience during take-off or landings….with an out of the box configuration for the nose gear set-up.

    You should be safe to fly it as is.

    Remember….Glide in w/o power, get it down to a few inches high then SLOW HER DOWN / hold her off before touching down. Landing with minimal energy is the key that I’ve learned from several hundred landings.

    Don’t flare high or she may drop a wing as she slows down. Flare when about a foot high then descend to a few inches and HOLD HER OFF. She won’t drop a wing in ground effect. Sometimes she touches with me holding full up elevator….like a Cub! My CG is by the book.

    Also, fly only in 5 mph winds or less if you want to avoid landing incidents.

    This week has been amazing in north Texas. I’ve made several B-2 flights every day this week at sunrise in cool, crisp air and almost calm winds. I estimate 25 landings this week.

    I launch 15 min before sunrise for the first flight. The strobes HELP! She looks like a UFO / UAV in the pre-sunrise sky. Such an awesome looking bird!

    -GG

    PS….Yawn! But this weather won’t last forever. Gotta take advantage of it.

    PPS Now flying with SMC 6200 Graphine Extreme TruSpec LiPos. Great batteries! However, I got 14 months on the prior set of Admiral Pro 6000 batteries before I began to see indications of aging/use. Not bad! No complaints! And they got TONS** of use.

    **Estimated 300 to 400 cycles per battery.
    Use profile…FYI:
    - Not flown below 50F unless warmed first
    - max of 3600 to 4000 mAh consumed
    - 70% (F-4) to 50% (B-2, AL37, PJ-50) mixed throttle flight profile with a little 100% during acrobatics
    - Charge rate = 4 amps
    - Aging signs = slight swelling, internal resistance increasing, and one battery refused to charge above 3.5 volts/cell
    Not saying the above is gospel, but it seems to work.

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    • Thank you for the response/information !

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      • Originally posted by xviper View Post
        You should give it a go as is. You may not have any ground tracking issues like a few of us. I think not everyone has this problem. No harm done if you do have problems. Just don't try to take off. Check out some of the early YouTube videos and decide for yourself.
        My experience is that tracking problems appear, and get worse, as the landing gear wears and develops slop. FW retracts are quite poor in this respect, they very quickly develop wear in the trunnions. Some models seem more susceptible than others (for example, the Avanti S has a well deserved reputation for being squirrely on the ground).

        Whenever I encounter a model that doesn't track well on the ground, I put an Assan in it. So far the Assan has cured all of them.

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        • It's not slop. It's more that the B-2 has wide main gear spacing and short main to nose spacing. It makes accurate steering alignment a bit picky. And just like all airplanes could benefit from a flight gyro all planes COULD benefit from a steering specific one. But just the same some may choose not to use one or the other in some aircraft...

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          • If this isn’t UFO / UAV looking, nuttin’ is. Early morning before sunrise. (square fiber mat is my knee cushion).

            A cool 42F this calm morning.

            -GG

            PS You might notice a lot of nose-up trim….that’s my take-off and landing trim setting. This goes back down to the standard 8 mm / 4 mm for flying around.

            Click image for larger version  Name:	6C208E45-2B29-4552-914D-D6DC762FFA89.jpg Views:	0 Size:	147.1 KB ID:	359318

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            • Here's a nice recording of one of my flights some weeks ago, just after I balanced both fans.

              My B-2 had a great sound already but thanks to the balancing I did , the whine at higher revs almost disapeared, it's all whoooooosh now :)

              https://www.youtube.com/icarusthe2nd

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              • If Any body thinking about fpving this I’d like to hear your opinion about it

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                • Originally posted by Cptcc View Post
                  If Any body thinking about fpving this I’d like to hear your opinion about it
                  FPVing….might be a real challenge. I believe I saw an FPV report on YouTube with the B-2. In general, read the following:

                  My opinion….short summary:
                  1) Awesome crowd pleaser
                  2) Must fly in 5 mph winds or less
                  3) Flies great….landing without damage is tricky. But easier if flown in light winds only
                  4) Buy a spare nose gear assembly plus servo to have on hand when a landing goes bad. Once a crow hop starts, damage follows. It WILL happen!
                  5) Not a beginner’s EDF.

                  I have flown mine several hundred times and always look forward to a calm wind day so I can fly it again. I love to fly the B-2. It is not my favorite because of the skill needed to land without a bounce. My favorite all-around is the PJ-50 WITH AN ADDED GYRO. It is FAST, acrobatic, easy to land, handles STRONG winds great and no gotcha characteristics.

                  Fly the B-2 in wind and you will bust a landing. The only times I have gotten nose gear damage is when I have ignored my wind speed limit.

                  Read my review….B-2 Revisited - Again / Tons of Flights and also read what others think at:

                  https://www.motionrc.com/products/fr...t-pnp-fj31711p


                  -GG

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                  • Hi All .Could some one possibly help with the set up of the assan ag61 gyro for the B2.(diagram) or instruction . I have seen a few posts but they seem to be different set ups .(y lead required?)Thanks in advance..

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                    • Originally posted by Wren54 View Post
                      Hi All .Could some one possibly help with the set up of the assan ag61 gyro for the B2.(diagram) or instruction . I have seen a few posts but they seem to be different set ups .(y lead required?)Thanks in advance..
                      You're talking about the steering gyro, right? If that's the case, then here's what I can tell you ............................. Not sure which part you need help with so here's the whole thing. It's gonna be long. Also, read the Assan instructions that come with the unit. It contains pretty much all the information you need to do this.
                      First, because the B-2 uses very high (100%) gain on the RUD channel, it is important to isolate the nose steering servo from the control box. You don't want 2 gyros working in series. The Assan comes with instructions with a diagram so have a good look at it. The unit should be mounted somewhere just behind the cockpit and over the nose gear. Secure it with a double sided sticky pad and add a piece of tape over the whole thing to ensure it stays nailed down. All wires to the rear. The Assan has 4 leads - 2 in and 2 out. One set for steering (Assan calls it "turning") and one set for the retract, so it's not that easy to get them mixed up due to male/female ends. The Assan kills the steering when the nose gear is up. If you don't care about this, then don't bother with the retract leads.
                      Trace the steering servo back to the box and unplug it. (Nothing gets plugged back into that now empty slot.) Bring it forward and plug this free end into the Assan lead that is for the steering servo OUT.
                      Now this is where the Y comes in. From the RX, unplug the rudder lead and install a Y. Put the thing you just pulled out of the RX and plug it into one side of the Y. The other side of the Y gets a short extension. The other end of this extension goes into the Assan steering ("turning") IN.
                      Now, trace the nose retract lead back to the control box and unplug it. Plug into that now empty slot, a short extension that will reach the Assan. Plug the Assan into that extension (gear IN). Bring the retract lead to the front and plug that into the Assan (gear OUT).
                      That's it for the wiring connections. Check that the retract works via the TX. Check if the steering works, along with the drag rudders. If not, don't worry about it. This is when you do the "auto config" thing. Deploy the retract and unplug the plane battery. Read the instructions to see what to look for in the Assan blue light. Power on the plane and watch the blue light. It should begin a sequence of blinks. Within 30 seconds of that blinking, you must move the rudder stick (throttle cut ACTIVATED, so no accidental throttle input) FULL left to right as fast as you can at least 10 times (5 each side), with rudder rates at 100%, stopping with the stick on the left and holding it for several seconds (can take 10 to 15 seconds) until you hear a servo work to one side. That should do it. If not, power down and repeat because you didn't wait for the proper blue light or you didn't work the rudder stick fast enough. Now test the rudder input for both steering and drag rudders. You'll notice the steering is quite sluggish to return to neutral. That's the way it's meant to be. The actual steering gyro test is to move the nose of the B-2 left and right and see that the nose wheel goes the other direction to try to keep the plane straight. Now you can go back and use lower rudder rates if so desired. Keep the stock gyro rudder rate at 100%. In fact keep the stock gyro rates as they are out of the box.
                      There should not be different ways to set this up. If you've seen a different set up, that means that the owner did not isolate the steering servo from the stock control box and kept the signal running through the stock gyro. This only meant that the steering signal going through to the Assan is so dumbed down that it is virtually ineffective.

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                      • Originally posted by Icarus the 2nd View Post
                        Here's a nice recording of one of my flights some weeks ago, just after I balanced both fans.

                        My B-2 had a great sound already but thanks to the balancing I did , the whine at higher revs almost disapeared, it's all whoooooosh now :)

                        Nice flight. I just posted 2 flights of my buddy's B-2 over in the plane chase tread. chk it out

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                        • Thank you Xviper . Yes it is for the steering gyro. Thats very valuable information done in great detail.I really appreciate.Cheers.

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                          • Cool calm winter day….allowed me to set a personal record with the B-2.

                            I made 25 B-2 flights!!! Ran outa daylight.

                            Total for the day was 35 (P-38 and F-4 flights, too).

                            Won’t get many days like today in north Texas. Made 10 flights at sunrise and 29 F. Then the wind came up. Waited until 45F after lunch and calm winds to complete the talley.

                            Living the dream.

                            -GG

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                            • Very impressive!

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                              • Thanks! Had fun…

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