Specifications
Page 3
This section describes our recommendations to help you in deciding which types of accessories to purchase for your new aircraft.
QTY. 1 Airtronics RDS8000 FHSS 2.4GHz Radio Control System
QTY. 1 Magnum XL 1.20RFS Four-Stroke Engine
QTY. 4 Airtronics 94162z High-Torque Metal Gear Ball Bearing Servos
QTY. 1 Airtronics 94358z High-Torque Metal Gear Ball Bearing Servo
QTY. 1 Airtronics 94102z Standard Servo
QTY. 4 Airtronics 12" (305mm) Servo Extensions*
QTY. 1 Magnum 2-3/4" (70mm) Aluminium Spinner
QTY. 1 APC 16 x 6 Composite Propeller
QTY. 1 Thunderbolt 4-Cycle Glow Plug
QTY. 1 Magnum Fueling Valve
QTY. 1 Global Silicone Fuel Tubing
QTY. 1 Du-Bro 1/4" Foam Rubber
QTY. 1 Monokote Opaque White Covering Material
OUR RECOMMENDATIONS
WHAT GLOW ENGINE SHOULD I USE?
HERE'S A LIST OF WHAT WE RECOMMEND TO FINISH THE YAK 54 ARF
WHAT RADIO CONTROL SYSTEM AND SERVOS SHOULD I USE?
To get the most out of the aircraft, we suggest using a higher-end digital
programmable radio control system, such as the Airtronics RDS8000 FHSS
2.4GHz radio control system or the Futaba 7C FASST 2.4GHz radio control
system. Either of these two radio control systems will provide the advanced
features that most iers want for this type of aircraft.
Because of the size of the aircraft and the large control surfaces, you must use
high-torque ball bearing servos. For crisp, positive control, we suggest using
high-quality, dual ball bearing servos with a minimum of 100oz/in of torque on
the ailerons and the elevator halves. We suggest using a high-quality, dual ball
bearing servo with a minimum of 150oz/in of torque on the rudder. For throttle
control, a standard ball bearing servo can be used. We suggest using Airtronics
94162z servos for the ailerons and the elevator halves, an Airtronics 94358z
servo for the rudder, and an Airtronics 94102z servo for the throttle. Both the ailerons and the elevator halves use dual servos*.
*If your radio control system is not capable of mixing the two elevator servos to move the same direction, the use of an electronic servo
reverser will be necessary.
There really isn't too much else that you'll need to nish your Yak 54 ARF. You'll need a fueling valve, a 2-3/4" (70mm) aluminium
spinner, and propeller and a glow plug to suit your engine. You'll also need typical modeling supplies, such as foam rubber to protect
your receiver and battery. White covering material will also be required to seal the aileron and elevator hinge gaps.
WHAT OTHER ITEMS DO I NEED?
*The Yak 54 ARF allows the option of mounting the two elevator servos in the back of the fuselage (if using a heavier engine), or under the cockpit deck
(if using a lighter engine). If you mount the elevator servos under the cockpit deck, servo extensions should not be necessary.
The Yak 54 ARF can be own using either a 1.00 to 1.35 size two-stroke engine or a 1.20 to 1.40 size four-stroke
engine. The aircraft will y great using either type of engine within the recommended size range, although for
the best aerobatic performance, we suggest using an engine at the high end of the suggested size range.
For the best ight performance, we suggest trying to keep the ready-to-y weight of the aircraft as light as possible.
Using an engine that's bigger than recommended will only add extra weight to the aircraft, negating any of
the extra power from the larger engine and increasing the wing loading. In most cases, you'll get better ight
performance from a lightweight but powerful engine, than from simply a higher displacement engine. We don't
suggest using an engine that's outside of the recommended size range.
Whether you're going to use a two-stroke engine or a four-stroke engine, the engine will be mounted on
its side. If you're using a two-stroke engine, you will need to use an after-market Pitt's style mufer
to direct the exhaust out the bottom of the cowl. If you're using a four-stroke engine, the exhaust
header on most engines can be rotated down to allow the stock mufer to exit the bottom of the
cowl, so no after-market mufer should be necessary.