8S Gripen Dance! ✈️ Aerobatics with Thrust Vectoring
26These were a few pretty cool aerobatic flights with my 8S-modded RC JAS-39 Gripen from Freewing Model. Nothing like a nice Gripen Dance to improve your day, wouldn't you say? :D
Don't forget to check the last landing... that came out real smooth! :D
After some crashes and complications for the past year, the Freewing Gripen is finally back in the air and here go a few cool clips of the most recent flights after finally solving the issues that were causing me to suffer so many accidents :)
On the downside, the plane is now way too nose heavy for my likings (which you can notice from the ridiculous amounts of elevon deflections used to perform turns and maneuvers) but I'll eventually fix that. The important thing is that she's back and she's rocking again! ^^
Shameless plug: if you want to contribute to my work, please consider having a look at some of my merch! ;)
airguardian.creator-spring.com
These were flights 137th to 139th on 'Jana'.
Pilot: RC4ever
Ground video: Luis Ibáñez
Airfield: Club Els Cards
SPECS (Reflecting my setup):
Model Scale: 1/9th
Wingspan: 882mm
Length: 1613mm
Weight: 2350g (w/o batteries)
TOW: 3400g
*CG: 40mm aft of factory recommended position (molded into the wings)
*Current CG is temporarily more nose heavy.
Material: EPO
Motor: HET-1865kv inrunner motor (added as a mod)
EDF: 9-blade 80mm Jetfan (added as a mod)
ESC: Freewing/Hobbywing Flyfun 150A 8S (added as a mod)
Servos: Stock servos on the canards, ALZRC DS452MG on TV yaw, JX servos on elevons, rudders and TV pitch. (added as a mod)
Landing Gear: Electronic retractable w/ aluminum trailing link struts
Receiver: FrSky X8R (user choice)
Gyro: Hobby Eagle A3S3 (added as a mod)
Canards gyro: GWS PG-03 (added as a mod)
Separate UBEC: Freewing 8A (added as a mod)
Receiver battery: Rhino 2S 610mAh (added as a mod)
Main battery pack:
- HRB 2x 4S 4200mAh 50C
- Turnigy Nanotech 2x 4S 3300mAh 70C
The jet is powered with an upgraded 8S 80mm Jetfan EDF with a 1865kv HET motor. I had to cover the cheater hole with a mosquito net to protect my expensive investment from an otherwise inevitable FOD considering the conditions of my gravel-dirt runway so the jet isn't even displaying it's full thrust potential. This obviously has an effect on performance and current draw. Sadly this setup is too amp hungry and can only get two and a half to three minute flights with throttle management and 3Ah packs. The batteries also struggle to deliver the amps, despite being Panther packs that are pretty heavy/capable. Overall the Jetfan is indeed an improvement in performance over stock setup, but the short resulting flight time kinda defeats the purpose, need to go to higher capacity batteries, and using lower-C packs to keep the weight in check.
More setup details:
https://www.rcgroups.com/forums/showpost.php?p=46318505&postcount=2099
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