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Get your Viper90 here ➡ https://www.turbinesrc.com/fr/jetse...

Eflite 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 4pole (SPMXAM1400)
ESC: AvianTM 130 Amp Brushless Smart ESC (SPMXAE1130A)
8 Digital MetalGeared 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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