E-flite Viper 90mm EDF Jet 🐍 Maiden Flight & Review

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- Get your Viper90 here ➡️ https://www.turbines-rc.com/fr/jets-electriques/3003-e-flite-viper-90mm-edf-bnf-as3x-safe-select.html?aff=4

🐍 🐍 🚀 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

Jeti 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!
I will Maiden at 17mm and….???

CG 17mm:
- HRB4000 60C (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 50C (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 are a bit bigger than in this video):

-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



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