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Official Freewing Twin 80mm F-14D Tomcat Thread

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  • Originally posted by Kurtzz View Post
    Houston (xviper) we have power. Yes, the lead with the extra wire is the BEC lead. I recruited my Secretary of Finance (wife) that can become the Secretary of War real fast, to lend a hand. I lowered the trim setting as suggested whilst she hit the bind button and I plugged both batteries in at the same time, worked like a charm until I powered it down and reinstalled the ply battery tray. Went to fire it up again and beep, beep beep real fast again, no power to the motors, control surfaces worked fine. Sooooo, powered it down, plugged both batteries in at the same time, work like a charm, repeatedly. My A10 is not as particular on plugging the batteries in at the same time, go figure. You mentioned calibration, is that possible without any additional hardware or cards? Thanks xviper!!
    Good you got it figured out. The throttle calibration is something that should be done right after binding with any and all electric planes. To do this, it is necessary to plug both batteries in at the same time, so help is needed here as well.
    To do T. Calibration ................................. TX on. Throttle stick to full throttle, throttle cut NOT activated, plug in both batteries at exactly the same time. Listen for the first beep tones, then immediately lower the throttle stick to the bottom. You should then get the usual start up tones and the cell count beeps. You're now done and you don't ever need to do this again until you change RX and/or TX. This is how the ESCs know what zero throttle is and what 100% throttle is and for a multi, this is how the motors sync to each other and run the same. For planes that you've never done this, even though the ESC/motor seems to run and even though your TX monitor tells you that the throttle goes from 0 - 100%, the ESC doesn't actually know this. As an example, your ESC may actually be going from -5% to 90%. This does not optimize your throttle reaction.

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    • I didn’t get it figured out, I had help! Wow, I guess I’ve just been lucky on all my electrics, have never done this, not even on my A10, but I will now. I have noticed on my 59” AJ Slick when I switched it over to my DX9 the motor does not activate until 1/4 throttle or so, found out almost too late, brought the power back setting up for a landing, decent head wind, then wings started rocking, I was low, short, and wagging. I knew if I could get the nose pointed up my next move was firewall the throttle. The day was saved, thanks again xviper. Now going to set throws by the book and get a maiden in the next few days or so.

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      • On your Slick, a throttle calibration will resolve that right away. On multis, if you've ever done a fly by and heard a kind of harmonic resonance sort of sound, that means the motors are not in sync. They are running at slightly different rpm at any given throttle position. Calibrate and you should never hear it after that.

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        • Ive been meaning to join this thread for awhile now. I have finally come around to it. here is my FPV F14 tomcat. It is still a work in progress however when completed she will have the ability to expend freefall ordinance and will be out fit with a dual suite for both the pilot and the RIO. my plan is to have the RIO along in the backseat so I can take up my friends and or to have them do some of the work with things like the wing sweep, bombs and gear deployment so I can focus on flying the plane. The display is the non flickering version of RC gauges G1000 air data display. mine displays airspeed, altitude, attitude and distance away from the home point so I can ensure I don't fly out of range. I did have to adjust my Air-unit camera lens to get the display to focus but now the lens shows crystal clear instrumentation.
          Attached Files

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          • Good luck with the project - it's already a very heavy plane so try to keep additional weight to a minimum.

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            • Amazing setup, latebloomer! I have the Motionsic BAG FPV setup as well, but in my Viper 90mm. As kallend mentioned, weight can be an issue, but as long as you can make CG you'll never have a problem as long as you're aware of the minor changes in flight characteristics. But judging by the experience required to even have your setup, we're just preaching to the choir.

              One thing I would like to recommend, If you haven't done so already, is upgrade your motors. I put two FMS 3665-2000kv 80mm motors in my F-14 and I can literally accelerate straight up after takeoff when clean. The cans are just a smidge bigger than the freewing motors, so I put a sander on my dremel and shaved out a bit of foam for a snug fit. Trust me, you won't regret it.

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              • latebloomer98 great mod and nicely done as well. Like seeing unique modifications. 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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                • Originally posted by Dougcarr73 View Post
                  Amazing setup, latebloomer! I have the Motionsic BAG FPV setup as well, but in my Viper 90mm. As kallend mentioned, weight can be an issue, but as long as you can make CG you'll never have a problem as long as you're aware of the minor changes in flight characteristics. But judging by the experience required to even have your setup, we're just preaching to the choir.

                  One thing I would like to recommend, If you haven't done so already, is upgrade your motors. I put two FMS 3665-2000kv 80mm motors in my F-14 and I can literally accelerate straight up after takeoff when clean. The cans are just a smidge bigger than the freewing motors, so I put a sander on my dremel and shaved out a bit of foam for a snug fit. Trust me, you won't regret it.
                  Yeah the weight is definitely noticeable. I'll likely be using the FMS set up you mentioned. I think RC informer and two brothersRC were using the FMS set up. I just need the free time to get that done lol. I'm splitting my time between both fulltime work and full time school so progress has been slow haha.

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                  • Originally posted by latebloomer98 View Post

                    Yeah the weight is definitely noticeable. I'll likely be using the FMS set up you mentioned. I think RC informer and two brothersRC were using the FMS set up. I just need the free time to get that done lol. I'm splitting my time between both fulltime work and full time school so progress has been slow haha.


                    Ahh yes. Those dang priorities tend to get in the way of RC aspirations.
                    ​​​
                    When you get a break check out these vids from "Just Plane Crazy." They show his upgrade to the FMS 3280-2100kv motors, which provides some insight as to what the more powerful 3665-2000kv motor will do to an F-14.

                    In pt 1 I discuss why the upgrade and show test results from my Futura that sparked this mod and show base numbers from the Tomcat. Time lapse the build and ...


                    I upgraded the motors and esc's in my Freewing Motion Rc F14 Tomcat. With the new V2 Platinum 2100kv motors and Predator 100A sbec esc's, I can say the power...

                    Comment


                    • Originally posted by Dougcarr73 View Post



                      Ahh yes. Those dang priorities tend to get in the way of RC aspirations.
                      ​​​
                      When you get a break check out these vids from "Just Plane Crazy." They show his upgrade to the FMS 3280-2100kv motors, which provides some insight as to what the more powerful 3665-2000kv motor will do to an F-14.

                      In pt 1 I discuss why the upgrade and show test results from my Futura that sparked this mod and show base numbers from the Tomcat. Time lapse the build and ...


                      I upgraded the motors and esc's in my Freewing Motion Rc F14 Tomcat. With the new V2 Platinum 2100kv motors and Predator 100A sbec esc's, I can say the power...
                      I have a pair of 3665-2000kV units in mine. It's no slouch.

                      Comment


                      • Originally posted by Dougcarr73 View Post



                        Ahh yes. Those dang priorities tend to get in the way of RC aspirations.
                        ​​​
                        When you get a break check out these vids from "Just Plane Crazy." They show his upgrade to the FMS 3280-2100kv motors, which provides some insight as to what the more powerful 3665-2000kv motor will do to an F-14.

                        In pt 1 I discuss why the upgrade and show test results from my Futura that sparked this mod and show base numbers from the Tomcat. Time lapse the build and ...


                        I upgraded the motors and esc's in my Freewing Motion Rc F14 Tomcat. With the new V2 Platinum 2100kv motors and Predator 100A sbec esc's, I can say the power...
                        I graduate next year so those priorities will pay off soon lol. I am excited to be done with college, finish the project and get back into this hobby. I'll likely be putting those fans in there after the first and hopefully I'll be able to post speed runs and onboard aerobatic results on YouTube from the cockpit. Either way it'll be the closest thing I get to flying any type of Jet for awhile. I want to join the Navy and become an Aviator but they've got a serious wait time going on to start pilot training so I'll have to wait it out until that billet becomes more available haha.

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                        • Don't leave your RIO behind! Lol

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                          • Originally posted by rifleman_btx View Post
                            Don't leave your RIO behind! Lol
                            GIB is 'Checkin' Six'. Tally Ho, Ho Ho, 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


                            • I have a question about the motors on the F-14. Are they counter rotating or do they both rotate in the same direction?

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                              • Same

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                                • Do you think that is causing some of the roll to the right some people are talking about?

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                                  • Are you thinking of the roll that the 40mm Eflite one has?

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                                    • Originally posted by marshallfamily@yahoo.com View Post
                                      Do you think that is causing some of the roll to the right some people are talking about?
                                      I doubt it. I think if people are reporting a roll (and I've not seen these reports), it could be that they haven't trim it properly for each wing configuration. One way to tell for sure, is to trim the plane (wing out) so that it flies "hands off" at medium throttle. Once trimmed, slow down to near stall speed and suddenly throttle up to max. If it rolls, that might be due to motor rotation.
                                      The Eflite F-14 utilizes trimming tied to flight modes for each wing position. This is something that I first heard of when Evan posted it. I was going to follow suit for next season on my FW F-14. Makes a world of sense since we can't be sure that there isn't a bit of wing irregularity (warpage, sweep deployment, control surfaces, etc.) from one side to the other.
                                      PS. Mine rolled left before fully trimmed.

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                                      • Thank you!

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                                        • Will the current ESCs handles the FMS 2100KV motor upgrade or do the ESC's need to be upgraded as well?

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