This article explains how to set up the Spektrum DX6i transmitter to work with the Tamiya MFU

OK so this may be a little long but persevere as it does work well.

My Spektrum is Mode 2 so this is for that! You can reset the mode ( which sticks do what) but thats another story. Mode 2 is the one you want I think - anyway it works for me.

A bit about Receivers

First this is for the Spektrum DX6i or better. This is a 6 channel set the RX's are a tad expensive but luckily you can get cheap clones.

So I universally use the OrangeRX 6 channel receivers, they work fine and at about GBP10 each you cannot really go wrong.

These receivers do not have any failsafe and you may be thinking that that is not good but it does benefit us as if the TX signal ios lost the MFU will shut down/ When the signal returns it powers back up again!

You can get the Orange RX Receivers from Orange RX UK there is also a twin packe ! On Hobbyking they are also advertising a micro 4ch RX but although it binds I cannot get it to work. So cheap RX done!


Next the MFCU uses trim on channels to access extra functions. The trim on the spektrum is digital and does not go far enough and that could be a real pain. BUT the DX6i spektrum also has dual rates on 3 channels - luckily these are the ones we need - or at least two of them are. This relies on the fact that the MFCU stores the TX settings when you run setup so will accept less than 100% as the full throw, then any extra is trim

Never mind it works is all!

The TX set up

The Spektrum has 10 model memories so you can store settings for each one and you will have to set each one you want. Sounds troublesome but in the setup menu there is a copy function that will copy your settings to a new model.

First you have to reverse the channels as Futaba are always backwards and Spektrum is Futaba like.

Enter the set up menu and locate the travel adjustments - set the travel on the 4 fully proportional channels to 125%

Next enter the set up menu and scroll to the DR/expo settings.
Ensure that all the rate switches are at 0 ( the second column of the display will show 0) then navigate to the third column (should sy 100% if you have not touched it) and scroll the setting to 66%

Now set all the rate switches to 1 ( the second display col will now be all 1's) and make sure the 3 channels are at 100%.

Exit set up and set all the rate switches to 0 (66%)

Final MFU set up

Now we have to go back and run through the MFU setups.

On the MFCU press and hold the button and enter set up mode. now go through the channel set up process. left vertical from top to bottom, left stick hor from right to left , right stick vert from top to bottom , right stick horizontal from right to left. This sets all the channels max throws in the MFCU.

Thats it

Thats it, it should now all work.

On the Spektrum the left stick is vertical throttle and horizontal rudder.
To eg access rev mode move the rudder rate switch to 1 and then move the left stick horizontally all the way to the left.
To change between lights and legs go to the right (sticks reversed!!). This works for the aileron and elevator channels which are the right stick vert and horizontal respectively.
To start/stop the engine then set the rates on rudder and aileron to 1 full right on the left stick and full up on the right.