Printable Version
  > Jakadofsky Jet Engines  >  PRO-X Turboshaft Turbine

PRO-X
Turbine Engine

This engine has been improved beyond the obvious increase in power output. The new AECU and Kerosene ignition system is an excellent indicator that Jakadofsky has identified and is actively developing better systems for their turbines. The audible double beep after the starter battery is connected and the new programming procedures are all targeted at reducing the complexity of turbine models.

PRO-X  Turboshaft Turbine Engine w/Machined Wheel  $12,280.00 

Turbine models do not use the throttle channel on your transmitter because the turbine engine speed is completely independent from your collective pitch. The PRO-X turbine control consists of a single channel (3 position switch) on your transmitter for the turbine switch. This single switch replaces the two switches needed for the RS & PRO series turbines.

Normal Turbine Operation = Fixed Turbine RPM

The turbine engine is started and automatically spooled up to an operating RPM with the helicopter's blade pitch in neutral. Once the operating RPM is achieved the turbine will signal the pilot using the auxillary LED and the pilot can lift the helicopter off the ground. Once in the air, the turbine speed remains very constant reacting only to the largest changes in pitch. The turbine's fundamental operation guarantees a constant rotor-head speed which can be fine tuned in the AECU.

Receiver Connections for Jakadofsky PRO-X Turbine Models

The following table shows the most common receiver configuration for turbine models. Depending on your transmitter, channel 7 or 8 normally has a 3 position switch which would be used for the turbine switch.

From experience, we do not actively change the turbine RPM during flight. Many factors contribute to what that flying speed should be including fixed elements like the model weight and rotor blade type to variable elements like the air temperature and humidity which change day to day. It is not necessary to reduce speed at all, however the most compelling reason when the model is flown in a different location, where the altitude is 1000 feet different than where you regularly fly or the air is more or less humid.

Turbine Autostart Procedure

The turbine switch is the only way to start or stop your Jakadofsky turbine engine and can be used at any operating speed in an emergency. To achieve the best performance from your turbine, always return the engine to IDLE and allow it to run for 30 seconds before switching the turbine to OFF. The engine will automatically follow the next procedure during shutdown to ensure the engine cools off to a temperature below 80 degrees to avoid damaging internal components.

Turbine Autostop Procedure