We are proud to introduce you the first biplane in history of KRILL Aircraft - fullcomposite kit


ULTIMATE 300KS was developed by our team in co-operation with Sebastiano Silvestri (It.).

Original kit Ultimate 300 KS was developed by our team for patern and 3D flying too. Kit has had great flying characteristics, but not sufficient for top competitive flying.

We decided to improve it‘s flying characteristic and in cooperation with great Italian pilot Sacha Cecconi was created new version Mk2 built on strong base of current kit and test it with our pilot Marek Plichta. And what are the differencies? At first, we put close together top to bottom wing and engine axis is now right in the middle of the wings. At second we enlarged ailerons on all wings at depth and lenght too, overall area is now bigger to original more than 60% ! Kit get uncredible flying agility also during harier tricks. Look at flying video below!

We also decrease overall weight at the same time reinforced wings (new wing spar) for higher drain during aggresive 3D flying . New is fixing of cabane inside the fuselage, new interplane struts , new holder of tanks and already instaled rudder servo tray. Holder of main landing gear is also redesigned, Gabriel horns are used on all control surfaces, as well as new builder friendly servo fixing on the wings. 

Kit is designed for patern flying and 3D aerobatics too. Slim wings with unique thin sharp airfoil allows to use gas engines from 110 to 125 ccm and final dry weight achieves promising 15 kg.

Description of airframe

- One piece top wing
- Bottom wings connected by strong wall C/F tube
- 4 ailerons on top surface textile hinges
- Central hinged elevators and rudder
- Fusselage with integrated ribs of Herex, Alutex and Aicraft plywood.
- Stainless steel thin wall tube cabane
- C/F interplane struts, no additional flying wires required !
- quick field assembly
- C/F landing gear with composite covers
- Holder for the fuel tank included



Standart content of the kit:

Airframe (fusselage, cowling, rudder, stabs with elevators, clear canopy glued to the frame), wing and elevator C/F tubes, stainless steel cabane , both C/F interplane struts, C/F landing gears with composite covers, landing gear covers, wing screws, wing strut screws, wheel axis, canopy and cowling screws, black G/F set of horns, fuel tank  holder.

Recomended accessories to be ordered:

-       Spinner ULT 125mm 6/s
-       SLH wheels 100/32
-       SEC tail wheel V3
-       RC equipment/rudder servo holder with ALU rudder arm

Engine/RC equipment:

- Strong Engine - with possibility run 30x10' or 30x12" prop. size. 
Higly recomended is MVVS 116 NP with JMB specially designed mufflers or any other gas engine
like DA120, DLA116/120, 3W110ib2 etc.
It is possible to use 4cyl engines as 3w140B4  or DLA128B4 too. 

Note: Using more powerfull engines in size as 150 ccm and more leads to lost warranty of the airframe.

- Servos:
JR servo DS8411HV - 7 pcs (4 - ailerons, 2 - elevators, 1 - throttle)
JR servo NX8921 - rudder