Flew my Hotspot for the first time yesterday, Awesome!!!! but I'm having problems with the airbrake programming on my 9Zap.

I am trying to mix in about 15% of up elevator when the airbrake is deployed and so far the only way I can do it is with a pmix for flap to elevator and then a second pmix flap to up aileron, does any one know of another way?

Set up is - servo in ch 6(flap) airbake mix active, elevon mix used.

Minch,
Why would you want to mix the speed brake to elevator? I did not notice much pitch change if any with the speed brake deployed on my Hot Spot.
Al

Minch,
Same here! Why would you want to mix the elevator in? From my experience, the Hotspots do not pitch up or down with full speed brake deflection. Just fly it to the runway. It's distinct delta design makes it difficult to make nose high approaches if that's what you're after. Also, the up trim with speed brake may get you too draggy on the approach and out of options just when you decide you need more elevator deflection!

The reason for programming in a small amount of elevator is that this is what it says in the instructions, mix in approx 15% of up elevator when airbrake is deployed. Also when the model was test flown by Mark Leavesley he agreed that a small amount would be needed to maintain level flight, as the model dropped the nose slightly when the airbrake was deployed.

I flew it on friday, without the airbrake (couldn't get the mix with the elevator working) and it landed ok, she came in fast so a little walk was needed. Friday was the first time I have flown turbines so it was my first experience of residual thrust and the amount of slowing down required.


Anyway I have sorted out my problem with the mixing, I had an elevator to flap mix active which was affecting the other mix, once inhibited the mixes worked ok.

Minch,
As they say, "Your Mileage May Vary". Perhaps your CG is different compared to other examples that do not exhibit the down pitch.

Minch,
Since no one here actually answered your question I will chime in and give you the answer that you desire. This is a very simple solution. What you do is use your condition menu(s).

Copy the default condition into one of the free conditios for that model.

Go into the trim settings and set your elevator trim to be separate and not combined. This is annotated next to each trim control in the menu by either a C for combined or a S for separate.

Then set your second condition to be on when you flip the switch to put up your airbrake. By doing all of this you don't need to do any fancy mixing with the pmixes and by setting your elevator trim to be separate from one condition to another you can have separate trim settings in each condition.

I know it sounds kind of difficult but if you need help just email me and I will be more than happy to walk you through it on the phone.

patrick.