Freewing MiG-29 βοΈ Thrust Vectoring Fun and CRASH!! πππ
80Long overdue, I know! After some tweaking the jet is already flying better but still not quite there yet. One way or another, just when this started to get fun I made a mistake and allowed the batts to drain too much power... so I ended up crashing as I went for a go around and the EDFs stopped. Still, I managed to control the crash to minimize damage and after an intense night of repair works and sacrificing some sleep hours, the jet was ready to fly again the next day ;)
More will come, keep tuned!
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These were AneΕΎka's flights 209th and 210th.
MiG-29 pilot: RC4ever
Ground video: Luis IbÑñez
Airfield: Club Aeromodelisme Els Cards
0:00 - First flight take-off
0:40 - Backflip
1:35 - Beautiful turn half-roll-reversal
1:58 - Kulbit
2:58 - Thrust vectoring abuse! :D
3:10 - Cool, high energy loaded roll
3:45 - First flight landing
4:10 - Second flight take-off
4:25 - Cool thrust vectoring maneuver!
4:45 - Backflip + really bad flat spin
5:17 - Cobra maneuver
5:55 - Better Kulbit
6:05 - Loaded roll into post-stall spin
7:03 - Tailslide (sort of)
7:40 - LVC + CRASH
7:58 - CRASH replays in slow motion
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Regarding my MiG-29 setup:
*QUICK LIST OF MODS*
- CG 15mm behind factory marks on the wings.
- Reflex trailing edge by 3mm flaps, 5mm ailerons (aprox).
- Reinforced stab assemblies to torsion (Epoxy - thick glass fiber laminate).
- Reinforced stabs to prevent deformation (WBPU - thin glass fiber laminate, 18g/m2).
- Replaced stab servos by Corona DS-238MG.
- Replaced stab linkages by 4-40 threaded rod with heavy duty Du-Bro ball links.
- Removed stock BEC.
- Installed separate 20A UBEC that runs from a standalone receiver battery (2S 610mAh).
- Installed ferrite chokes on ESC-Rx leads (next to ESC) and on the stab servo leads (next to servo).
- I am using the old FrSky Redundancy Bus for everything except landing gear, lights, and everything that goes through the ribbon cables (ailerons, flaps, gear doors), as these need to go through the BB.
- Shortened some of the wires, as I installed the RBus in the aft battery compartment.
I was concerned about the structural integrity of the stabs, and stab assembly so I did reinforce them with glass fiber cloth, which is part of the reason why it took me so long to get the jet ready. I'm not a fan of working with composite materials so I procrastinated a bit, lol. After my reinforcement mods, the stabs seem to be much more solid now. π
I took many of the 'well-known' ideas and good practices about this model recommended by other pilot-owners on forums such as RCGroups and HobbySquawk including adding reflex to the flaps and ailerons to maximize top speed and reduce trim drag (unloading the stabs in the process quite a bit) and I replaced the taileron servos by tougher ones, and the taileron linkages by 4-40 pushrods, and FWIW, also installed ferrite chokes on the ESCs leads to the rx as well as the taileron servo leads (to mention a few of the changes).
I also made my own 'quite personal' installation of the electronics and basically rewired the whole thing, changed the placement of the components, added a 20A UBEC, redundancy bus, 2x X8R receivers, the list goes on.
All in all the jet is a superb flier and has an incredible presence. It has some thrustline issues and it is still nose heavy with CG some 15mm behind the wing marks. Good news is, I managed to get the CG there with my heavy Panther Li-Po packs, and before installing thrust vectoring gear, so there's much room for improvement!
*GEAR DESCRIPTION*
Airplane: Freewing MiG-29 dual 80mm EDF + Vectored Nozzles Upgrade Set
Motors: 2x Freewing 3658-1920kV brushless inrunners
EDFs: 2x Freewing 80mm (9 blades)
ESCs: 2x Freewing 100A
Servos: Freewing 17g
Taileron servos: Replaced by Corona DS-238MG
Receivers: 2x FrSky X8R working in D16 mode, one with telemetry
Redundancy bus: FrSky RB16
UBEC: YEP 20A
Rx Battery: Rhino 2S 610mAh
Main Batteries:
- Turnigy Nanotech 6S 5000mAh 35-70C
- Turnigy Nanotech 6S 4000mAh 70C
- Turnigy HD 6S 4000mAh 60C
- HRB 6S 5000mAh 50C
- CNHL G+ 6S 4000mAh 55C
- CNHL G+ 6S 5000mAh 70C
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