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Introduction
The FMS 90mm Viper is an upgrade from the best-selling 70mm
Viper, designed to provide the look and performance of a jet
fighter with the stability of a low-wing sport aircraft, so that more
pilots of all levels can enjoy the fun of EDF aircraft.
The combination of FMS high-efficiency 90mm 12-blade EDF
unit, high-power 3670-KV1950 inner running motor and
high-quality 120A ESC provides unparalleled performance to
the aircraft, and the throttle can respond instantly, making the
sound very immersive. When paired with 6S 5000– 6000mAh
45C battery, the top speed could hit 120+ MPH.
The 90mm Viper has a superior structure, which complements
the power system, enabling it to perform well in both high-speed
and low-speed flight. It can fly leisurely, fly fast, and even
aerobatics - the 90mm Viper is extremely manoeuvrable and
can effortlessly perform most aerobatic maneuvers such as
rolls, somersaults, and side spins
The 90mm Viper adopts the latest assembly structure and
techniques, such as screw-together airframe, ball-linked control
surfaces, high strength spars, multi-connector, so that it can be
assembled in a very short time. In addition, the electronic
retracts in the locked-rotor mode and the CNC-processed
kneeling structure metal landing gear set are used to effectively
resist violent landing; the large-sized durable tires are used to
facilitate the take-off and landing on various grounds such as
cement roads, grass, sand, etc.
Kit contents
Before assembly, please inspect the contents of the kit. The
photo below details the contents of the kit with labels. If any
parts are missing or defective, please identify the name or
part number (refer to the spare parts list near the end of the
manual) then contact your local shop or email us: support
@fmsmodel.com.
Specifications
Wingspan: 1400mm /55in
Overall Length: 1280mm /50.4 in
Flying Weight: Around 3250g
Motor Size: 3670 KV1950
Wing Load: 107.6g/dm²
Wing Area: 30.2dm²
ESC: 120A
Servo: 13g X 8
Recommended Battery: 22.2V 5000-6000mAh 45c
No matter whether you have collected Vipers before, this newly
launched FMS 90mm Viper EDF is very worth looking forward
to. It can give you a refreshing experience in terms of details and
performance. It is the best choice for players to experience
large-scale aircraft.
Features：
• Electronic configuration: high-quality 120A ESC, high-power
3670 KV1950 inner running motor, high-efficiency 90mm 12
-blade EDF unit, high-precision metal digital servos.
• The extremely wide performance range and speed range
can be used for leisure flying and aerobatics, and the overall
take-off, flight and landing process is easy and smooth.
• The locked-rotor mode electronic retracts with overcurrent
protection function and the CNC-processed kneeling structure
metal landing gear set, effectively resist violent landing
• Functional navigation lights.
• Functional flaps
• The buckle structure design effectively prevent the cockpit
from falling off during flight.
• The large size battery compartment is convenient for placing
batteries of different sizes from different manufacturers.
• Large size durable tires for taking off and landing on rough
ground.
• Preinstalled ball-linked control horns for accurate and
precise movements.
• Screw assembly structure, , eliminating the trouble of
applying glue
A.
B.
C.
E.
H.
A:
Nose Cone
E:
Horizontal Stabilizer
B:
Fuselage
F:
Ventral Fin Set
C:
Winglet Set
G:
Vertical Fin
D:
Main Wing
H:
Wing Tubes
3
D.
F.
G.
I.
I: Screw Set
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