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00:00 Intro
00:18 Presentation (CG and LiPo…)
1:35 Take-off
1:57 Half throttle pass
2:22 Fast pass
2:40 Let it glide
2:50 Immelmann
3:12 Knife-Edge
3:40 Dedication pass
3:57 Inverted (Half throttle)
4:10 No throttle
4:27 LOW pass, full flaps
4:44 Climb out
4:54 Perfect Loop
5:04 Cruising
5:21 Full throttle break
5:40 Landing
6:03 Timers, Voltage Check
6:40 THANKS 🙏🏻
6:49 Photos (LiPo placement)

🐍 🐍 🚀 E-flite Viper 90mm EDF Jet
Wingspan 1400mm, long 1281mm, weight 2500gr empty, with HRB4000 3100gr, RT4400 70C 3177gr, HD4000 3182gr, CNHL4000 70C 3190gr, HRB5000 3245gr, CNHL5000 70C 3340gr
-FMS EDF 90mm 12 blades nylon composite (3.550kg THRUST) weights 340gr
-Motor: 3670–1950Kv Brushless Inrunner 4-pole (SPMXAM1400)
-ESC: AvianTM 130 Amp Brushless Smart ESC (SPMXAE1130A)
-8 Digital Metal-Geared servos

REX7 Assist
190 km/h top speed !

-Book CG is between 3 to 17mm (on the upper surface of the wing) from the back edge
of the front plastic wing mounting structure with model INVERTED, GEAR DOWN!
Maiden flight at 17mm and perfect!

CG 17mm:
– HRB4000 (605gr) all the way front
– RT44000 70C (677gr) 15mm back of front foam wall
– HD4000 60C (682gr) 25mm back of front foam wall
– CNHL4000 70C (691gr) 25mm back of front foam wall
– HRB5000 (745gr) 35mm back of front foam wall
– CNHL5000 70C (840gr) 45mm back of front foam wall

Rates: Aileron and elevator are Measured at the inside end. Rudder is Measured at the base.

After 3rd flight here are my rates:
My Low: aile 11mm (45%), elev 7mm (35%), rud 13mm (35%)
Mid (book’s low): ail 11mm (45%), elev 10mm (50%), rud 19mm (50%)
High (book’s high): ail 16mm (80%), elev 14mm (75%), rud 25mm (80%)

Flaps: 25/50mm without elevator compensation (4 sec delay)

-Flights and LiPo:
1st+2nd: CNHL 5000 70C 4m47 (3m49 motor) 3.87v
3rd: HRB5000 4m00 (2m36 motor): 3.86v
4th: CNHL5000 70C 3m34 (2m19 motor) 3.87v
5th (filmed): CNHL5000 70C 4m24 (3m08 motor) : 3.84v

#jet #viper #eflite #rcplane #aerobatics #edf