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Official FlightLine 1600mm B-25J Mitchell PNP Thread

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  • Originally posted by Elbee View Post

    FNL. Outstanding detail. Nicely done, Sir. Best, LB
    Thanks! My 1st foray into wheel design, but I am satisfied with the way they came out. Wish the plane would show up so I could see them on her... Soon enough

    Comment


    • Originally posted by Fast N Light View Post

      Thanks! My 1st foray into wheel design, but I am satisfied with the way they came out. Wish the plane would show up so I could see them on her... Soon enough
      I took some photos of the B25 wheels today at the Cleveland air show. Yours look great!

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      Marc flies FW & FL: AL37, MiG-29, T45,F4, A4, A10, F104 70 and 90, P38, Dauntless SBD, Corsair, B17, B24, B26 & P61, Lipp.P19, ME262, Komets, Vampire, SeaVixen, FMS Tigercat, FOX Glider & Radian XL.

      Rabid Models foamies, including my 8' B17 & 9' B36... and my Mud Ducks! www.rabidmodels.com

      Comment


      • Great looking and great fit on this ship. Preliminary shots will get runway shots soon.

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        • Nice weathering there Manfred! She really flies nice. Flights 7-10 for me yesterday. I really like this B-25. VERY predictable. I haven't noticed any bad habits from the plane although I have plenty of bad habits. The wind does like to push her tail but with two big verticals that is to be expected. I have not had to change anything from the book recommendations. Initially I thought the flaps might need a bit more, but the book settings have worked out just fine. Now that I am more than satisfied that she is setup (for me) and flying great, I'll start dressing her up with some high quality custom graphics.

          Comment


          • Originally posted by themudduck View Post
            I took some photos of the B25 wheels...
            TMD, great reference photos. I thank you, Sir.

            MANFRED-Nicely Done. I think that livery is the best of the 3 provided.

            Best, LB
            I solemnly swear to "over-celebrate" the smallest of victories.
            ~Lucky B*st*rd~

            You'll never be good at something unless you're willing to suck at it first.
            ~Anonymous~

            AMA#116446

            Comment


            • Not to argue LB but I created a poll asking which scheme people like best.

              Flightline 1600mm B-25 Mitchell decal schemes - RC Groups

              Comment


              • Evan D, I zipped over and voted. Great idea, Sir. Best, LB
                I solemnly swear to "over-celebrate" the smallest of victories.
                ~Lucky B*st*rd~

                You'll never be good at something unless you're willing to suck at it first.
                ~Anonymous~

                AMA#116446

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                • Is there any info/tutorials on the random servo movement generator (30 years in the hobby and I've never heard of one). Someday I hope to receive mine and do this mod.

                  Comment


                  • Originally posted by Fast N Light View Post
                    I have taken these wheels as far as I can...
                    FnL, Thanks again for your great design work.

                    Clever use of the "hex" as a key. Width easily modded to adjust to Robart tires.

                    Alignment hash line, axle cover, well thought out and executed, Sir.

                    Printed the NG wheel.

                    Stats: 0.75mm layer height, 0.4mm nozzle, HatchBox Silver PLA, Prusa 2.6.1rc Slicer, "Snug Supports," Mk3S, Satin Build Sheet.

                    Best, LB

                    Click image for larger version

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                    I solemnly swear to "over-celebrate" the smallest of victories.
                    ~Lucky B*st*rd~

                    You'll never be good at something unless you're willing to suck at it first.
                    ~Anonymous~

                    AMA#116446

                    Comment


                    • Originally posted by Evilmike View Post
                      Is there any info/tutorials on the random servo movement generator (30 years in the hobby and I've never heard of one). Someday I hope to receive mine and do this mod.
                      EM, Welcome aboard "The Squawk" Sir.

                      The RC Geek (Chris Wolfe) sells a version and might be the originator of the design.

                      I presume one could accomplish something similar using an Arduino/Arduino Clone and some simple 'sketch' code tinkering.

                      I do not know whether the RC Geek's is a series of lines of code or something more intuitive.

                      Best, LB
                      I solemnly swear to "over-celebrate" the smallest of victories.
                      ~Lucky B*st*rd~

                      You'll never be good at something unless you're willing to suck at it first.
                      ~Anonymous~

                      AMA#116446

                      Comment


                      • Originally posted by Evilmike View Post
                        Is there any info/tutorials on the random servo movement generator ...
                        This would be easily accomplished on any of the Open Source radios which include a scripting language, e.g. any FrSky Taranis running OpenTX or RadioMaster running EdgeTX, both of which include a built-in Lua scripting interpreter. Lua's standard math library includes the math.random() method that would allow for all sorts of random motions to be easily generated. Just write a Model Mixer Script and assign it to the turret channel and one of the radio switches. Since the code is running on the transmitter, there would be no need to add anything special to the aircraft.

                        I wouldn't be surprised if someone hasn't already done this.

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                        • Originally posted by Tom View Post
                          Update - As of this evening, we are now 12th in line to be inspected.

                          Unfortunately, the wait is MUCH longer than expected 🤨. At this point there is a possibility the 3rd shipment of B-25 may arrive before the first. It looks like the total transit time is going to end up about 3 months by the time this container arrives. Normal is 4-5 weeks right now.
                          The government spends a month inspecting a container of model planes while they let anyone or any thing come in across our southern border without any inspection.

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                          • P2vguy. I couldn't have said it better myself.

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                            • Tom, any updates on the inspection schedule? I know that yesterday was a holiday which probably means the inspectors are going to ease into their work today.

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                              • I understand the problem you are having. This is probably the most dysfunctional government in my lifetime (and that spans more than a few decades). Perhaps you might rethink the charging a customer full price on their credit card at the time of order and charge them instead at the time of shipping. Motion RC has had my money for over two months. If I were to charge credit card interest rates to MotionRC, they would now owe me +\- $100.00.
                                FMS P-51B 1400 mm
                                Durafly T-28
                                1875 mm B-17 (lost in midair with FW-190 at Bomber Field)
                                Flyzone DE Havilland Beaver
                                Durafly 1200 mm F4U Corsair

                                Comment


                                • Originally posted by Fighterpilot View Post
                                  I understand the problem you are having. This is probably the most dysfunctional government in my lifetime (and that spans more than a few decades). Perhaps you might rethink the charging a customer full price on their credit card at the time of order and charge them instead at the time of shipping. Motion RC has had my money for over two months. If I were to charge credit card interest rates to MotionRC, they would now owe me +\- $100.00.
                                  Pre Orders are what they are. If you pay your CC bill off every month you would avoid those interest charges. This isn't Motion's problem.

                                  Mike
                                  \"When Inverted Down Is Up And Up Is Expensive\"

                                  Comment


                                  • You should get a better rate on your card. Considering you don't pay interest for the first month but still did for two months since you said over 2, you are paying 114% apr.




                                    Originally posted by Fighterpilot View Post
                                    I understand the problem you are having. This is probably the most dysfunctional government in my lifetime (and that spans more than a few decades). Perhaps you might rethink the charging a customer full price on their credit card at the time of order and charge them instead at the time of shipping. Motion RC has had my money for over two months. If I were to charge credit card interest rates to MotionRC, they would now owe me +\- $100.00.

                                    Comment


                                    • you guys need to read with a little more comprehension. I pay off my credit card every month, so I don't have to pay interest charges. You missed the point all together, that If I were to charge Motion RC the same rate as credit card interest for having my money for two months, they would owe me +/- $100.00. I hope you understand that. I don't normally allow people to charge my credit card and not deliver the product for two months. I understand this is out of the control of Motion RC; however, the situation could be remedied if your payment method was debited upon shipment, not upon order. Simple fix. Hope you guys that commented on my previous now understand and I hope the government gets their act together and releases this shipment.
                                      By the way Evan D, 20% interest would be about $100.00. I don't understand how you get 114%.
                                      FMS P-51B 1400 mm
                                      Durafly T-28
                                      1875 mm B-17 (lost in midair with FW-190 at Bomber Field)
                                      Flyzone DE Havilland Beaver
                                      Durafly 1200 mm F4U Corsair

                                      Comment


                                      • APR… $100 for a year is 20% but for two months you need to multiply by 6. you miss the point of my jest.

                                        Comment


                                        • Originally posted by Fast N Light View Post
                                          I have taken these wheels as far as I can without the plane. If someone wants to give them a try, I just posted the .STL files.

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                                          Scale wheel rims for the FlightLine 1.6m B-25J for use with Robart tires (3.5" Main, 2.25" Front). These rims and tires have been fitted and optimized to fit the B-25. Link https://robart.com/collections/wheels-scale-wheels-2-4Motion RC https://www.motionrc.com/collections/main-wheels?filters%5Bbrand%5D%5B0%5D=RobartThe OEM main tires measure OD 3.33" and the Robart 3.5" measure OD ~3.53". The increased diameter decreases the clearances to the gear strut and doors. Moving the wheel inboard seems to balance these clearances. Removing the OEM 1.75mm aluminum spacer will create space for the outboard gear door to close. A single washer may replace the spacer.The 3.5" Robart mains looks great on the B-25. The fit to the gear strut and outer door is a bit closer than the OEM tire. The Robart tires have ~2mm clearance and do not interfere on my setup.If you want to support my contributions here, please consider leaving a tip https://www.paypal.com/paypalme/ShowmethedenaroMain Wheels Options1) Robart 3.5" Tires on 3.5" printed rims.2) B-25 OEM Main Tires on 3.5" printed rims. Destructively remove the wheel spokes from 1 side of the OEM rim. Remove tire and trim its ID to approximate the printed rim OD. Posted on HobbySquawk https://www.hobbysquawk.com/forum/rc-airplanes/rc-propeller-airplanes/380695-official-flightline-1600mm-b-25j-mitchell-pnp-thread?p=388746#post3887463) Robart 3.25" Main Tires on 3.25" printed rims - This rim appears much smaller and spoils the scale appearance IMHO. It should offer greater clearance when retracted. I don't have this tire so it was not fitted to the rim or plane, but I think it should work. Side by side photo of 3.25", 3.5" and OEM is included in the image set.Robart rim measurements 3.5" OD 47mm, W 23mm. 3.25" OD 41mm, W 21mm.Front Wheel Options1) Robart 2.25" Tire on 2.25" printed G16 rim (G16.2 provides a better grip on the tire)2) TPU Tire on 2.25" printed G17 rim, printed G1 tire - my 1st TPU part design. Pretty basic3) B-25 OEM Front Tire on 2.25" printed G18 rimBuild StepsThe rims are joined with a tapered hex key and are intended to snap together. Recommend securing the rim halves to each other with glue prior to flight. I am planning to use Clear Gorilla Glue (non-foaming) on the OD of the hex pins and along the rim split line inside of the tire ID. Tool Set P04.STL is provided to facilitate clamp fixtures of the Main and Front rims while adhesive is curing.CAUTION: Radial loads on the rims from taxi, take-off or landing may introduce a force which could separate the rim halves. Use your judgement & appropriate countermeasures to ensure this doesn't result in a wheel lockup or wheel separation from the landing gear. This includes blue thread lock on the axle grub screws.Post Print StepsFinish drill the axle holes before installing the tires. Press the hex pin into one half of the rim. Use a fine felt tip pen to accent the timing marks on the OD of the rims and the hex pin peak. Press the second rim half onto the hex pin. The center-line gap between halves should be very small. Step drill the axle holes 3.9, 4.0, 4.1 mm and 4.9, 5.0, and 5.1 mm. Verify the wheels roll smoothly on the axles.Rims are ready for painting if desired.For tire assembly, align the timing marks on the rim ODs and press/snap the hex key into place. Minor cleaning of the rubber flash on the ID of the tires can reduce interference at the rim split line. Hand stretching the tire while squeezing the rim is an effective way to close the gap between rim halves. A bit of strength and a good amount of persistence is helpful. Use a light to verify the split line gaps are same as when axle drilling was performed.I used a single thin metal washer between the rims and the struts both main and front.The front wheel cap is also snap on/off. Removal is best accomplished by using the mushroom head of the installed OEM B-25 axle to apply force from the inside of the cap.

                                          ​Planning to wait until the designs are validated to the plane before sharing on RCG. Special release for the folks here who helped me with them.
                                          i printed with ASA from Bamboo Labs. Parts printed excellent

                                          i think i might have measured the axle diameter a little off, or either the ASA filament shrunk. Most Likely the measurement was off a millimeter on the front and main axle size

                                          mains width at axle fits perfect with the factory supplied spacer.

                                          nose wheel width at axle is tight. Maybe a millimeter on each face of the wheel removed where the axle head and strut side meet.

                                          i also noticed the factory B-25 wheel has brass bushings inserted.
                                          Attached Files

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