THEMA:

OK, I do this for you.
The model is a boat with 2 gas engines and mechanical reverse.
I want to use only one stick for direction, both engines and reverse when in mode "slow motion"
Program would be the same for a tank.
It works OK with the attached program, but one channel is missing. Boat is moving in stick direction.

More detailed explanations on Monday

Hallo Gatson,
A tank model has three modes.
1.) Fast driving mode. Only the right engine were mixed (decreased or encreasd), steering witch stick P3
2.) Slow driving mode. The right engine were encreasd and the left engine decreased, steering witch stick P3
3.) The tank stand still and you want to turn it. The right engine were encreasd and the left engine decreased. steering with stick P4.

The engine controll stick is P4, both engine were encrease and decrease together.

You need one function (gas) with two sevos and stick P4 and four free mixer and three flightmodes (single,double and turn), thats all!!!

At evening I can send you a sample file.

With greets

Harald

A boat has a slight difference with a tank, she will not stand still.
At very slow speed if you want to turn right you need to have left shaft forwards and right shaft slightly backwards because rudder has no effect. Different from a tank.

The proportions how fast one motor goes forward and the other backward are not the same! My experience with a Rivarama (sport-boat) are, that one of them must run faster in order to turn in position. Programming in Tx should take care of that issue.

Kai

Yes ! Propeller backwards is not as powerful than forward.
The mix are OK for this.
Have a look at this vidéo (with Futaba T14 radio). Boat is 2.5 m long and 65 kg

Hallo Gatson,
1.)Basic Properties Gas with 2 engine and double Direktion



2.) Function Definition



3.)Servo assigment



4.)Three Flight modes and four mixer.

4.1) Single flight mode
Only the first mixer is activated, controlled with stick P3



4.2)Double Flightmode
The first and second mixer are activated, controlled with stick P3



4.3)Reverse Mode
The third and fourth mixer are activated, controlled with stick P1



5.) Mixer
5.1) The first Mixer work with the left engine. S1=100% and S2 0%



5.2) The second Mixer work with the right engine. S1=0% and S2 100% (same Picture as 5.1)

5.3) The third mixer stop the left engine for revers mode



End Part 1

With greets

Harald