Mostro 700 Electric Kit

The most advanced 700-sized helicopter in the market is available now. The Mostro 700 electric RC Helicopter by Avant RC.

Front-Left view

Right Side View

Front Right View

Left Side View

Front-Left View

Front Left Elevation View

Back Left View

Left Side Canopy View

Front Left Elevation Head View

Font Left Proifile View

Back Right View

Tail Blades Closeup

Tail Pushrod guide view

Boom Logo View

Tail Pushrod Guide view. Notice the adjustability to allow to adapt for either side of servo mounting.

Tail blade grip view. The Mostro uses tail blade grips with counterweights that lower the forces required by the tail servo to change the pitch.
This lower force makes the movements faster and the servo works significantly cooler.

Tail view

Tail fin and left side of tail case.

Top mechanics details

Back right view no canopy

Top mechanics closeup

Top mechanics closeup showing servo arm pin screws.

Motor mount slider plate.

Motor and ESC

Easy access sliding battery tray

Beefed up high strength belt drive.

Built Mechanics.

Swiveling Air Diverter Plate.

An Air Diverter Plate directs the airflow from the Naca Air inlets around the ESC an Motor for cooling efficiency and low drag.

The Mostro Monoblock. This is truly a new approach that we are introducing in the market.

In the design of the Mostro we wanted to have all the mechanics connected by rigid elements without flexible elements
being part of the system unless they needed dampening. The result was the design of what we call the Mostro “Monoblock” ( single block).

In the Monoblock design all elements of the system that affects the gyro sensing are mounted in a rigid superstructure.
No part of it rests on the flexible frames unless it needs dampening.

Receiver detail

Tail Servo Detail

Wide contact area boom clamp and Tail Servo.

There’s a second one about 6 inches forward for very high boom rigidity.

Yoke logos detail. (Both DFC and Follower arm heads use the RigidCore dampening system).

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Assembly pictures

Here are a few pictures of interesting assemblies.

New Spring-Loaded locking bracket used in to lock the sliding battery plate in place.

View of the Spring-Loaded locking bracket used in to lock the sliding battery plate in place.

You can see it in motion in this video.

Very large capacity battery area for up to 8000mah packs.

Servo with the support pin screw installed.
The kit comes with both for M3 JR/Spektrum servos and Futaba M2.5 servos.
All other servo brands are included in those two standards.

Servos with their support posts. 

Servos with their support posts detail and radio trays area.

A lower plate with spring-loaded tensioner pulley and fixed idler pulley assembled. They can be assembled for clockwise and counterclockwise main rotor rotations.

Gear and slider plate.

You can see how smooth the system runs in these videos:

Tail Servo frame mount (Default)

Another view of the Tail Servo frame mount

Landing gear is easily replaceable by removing two long screws.

As always our products are proudly made in the USA

Recommended Motor and ESC:

From flying prototypes and testing experience we have found the combination of the Kontronik Pyro 750-50 and the 750-56 depending on what head speed you’re looking for and the Kontronik Kosmik Cool 160 or 200 to be the best power combo we have tried on the Mostro for 12 cell configurations. For applications where very high power is needed we have found that the Pyro 800-48 competition is a power monster.  Other configurations and brands will also work great but these are the ones we have tons of experience on with fantastic results.


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