What's the difference between Lite and Compact Package?

As the ECU is mounted on the engine somewhere is needed to plug the battery into and make some sort of display for data to the outside world and this presents us with two options:

Lite package uses a small stamp size (42x24mm) shrink wrapped module which we call the "HUB", which the engine cable, battery, fuel pump and if you have one - the telemetry adapter, plus an external colour ECU display. This full colour graphics display has a touch sensitive screen which is bright and small enough to be mounted in the model, or can be unplugged when not required (its not needed for running).

As the colour display is quite expensive, it's useful that you don't have to have it permanently fixed in the model. The colour display also records the last 66minutes of operation and has a micro USB slot to install a micro USB card to offload the data to be examined on a PC easily, as it uses basic comma separated values that can be read in a spreadsheet.

Compact package combines the function of the HUB and display to a single unit. It's a boxed (35 x 46mm) black and white text type display with click action buttons. This eliminates the need to have a plug-in separate display but means you have to put it somewhere you can get your fingers to and it stays in the model all the time. The battery and engine also plug into this as does the fuel pump, and you can add the Xicoy telemetry adapter.

As this screen does not have any colour graphics or data recording it is the cheaper option.

You can add either type display later as an option if you choose.

I have two models, can I swap the one engine between them?

The "X" Series engines hold all the essential running data on the ECU mounted on the engine, even the radio settings. So it is easy to use the same engine between two or more models by simply adding a second fuel pump, plumbing and wiring to the 2nd model.

We saved you the hassle of listing the requirements by calling the complete set a "2nd Install Kit" which you can buy anytime and contains all the bits needed to fit out a 2nd model ready for you to swap the engine over.

The engine will control the pump just the same and there is no additional setting up to do when swapping them over, just prime the fuel tio the engine and it will take care of everything else. You can even have a different setup, you don't need to keep to Compact or Lite as you had in the 1st model.

Just be sure to order the 2nd Install to suit your correct engine size, simples!

What's so special about the "X" Series fuel pump?

The fuel pumps used on all the X series are very special. Don't try to connect it to any other brand of turbine.

The pump consist of a brushless outrunner type motor driving tiny gears, connected to a dedicated electronic controller, all squeezed within the tiny pump casing. It receives a command signal from the ECU in the form of a serial digital data stream, not an analogue voltage.

As soon as you connect it to the ECU, the ECU identifies it and if it is the wrong pump for the engine, it will refuse to drive it and will send an error message.

If you try to drive it with a regular ESC type control to prime or cycle it, you will blow the electronics inside immediately!!

The three connections are +, - and a 32bit serial data stream, NOT three wires of a typical 3-phase motor.

Make sure the plug is pushed fully home or it may show "pump not found

Can I derate the engine for 1st flights, the model is a bit fast and only 30N recommended?

This is sooo easy to do on the "X" Series.

In the RUN menu the MAX RPM reading also shows the Full Power thrust in N and in pounds (L) for that particular rpm.

If you dab the "-" button you can reduce the Max rpms and see the corresponding reduced maximum power the engine will produce. So its a cinch to reduce from say 95N to 80N without having to do any mental gymnastics to work out what the new rpm setting needs to be, just dab the button until you see the power setting you want.

The ECU will rescale the rpm range so 100% throttle will now equal the new maximum you have set.

Later on when you need, you can adjust it back up to maximum or anywhere in between by pressing the "+" button as you require.