12FG setting dual ailerons with differential - RC Groups
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Apr 22, 2012, 09:41 AM
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12FG setting dual ailerons with differential

Just a query on the best way of setting up ailerons with one servo each on a 12FG. It's probably the same procedure on an 8FG and a 14MZ.

In the Linkage menu model type screen I have set wing type as 2AIL. I believe I could have just allocated aileron again on another channel on the function menu if I had left the default wing type of 1AIL Not sure if one method is better than the other.

Ailerons, on channels 4 & 5, both needed reversing to get the correct direction of travel.

In the end point screen I have set the limit values to the point just before things start to bind and make nasty noises. Now for the first query. I have set the travel for each aileron to 100% up and 50% down to give me the correct differential. I think I should have set it to whatever the Limit values are set to. But it is set to a greater value than I need. I have then set the AFR values to reflect the correct control surface movement. Should I have left this at 100% and set travel values in the linkage menu to reflect the correct amount of control movement. Also was I right in setting differential in the Linkage/Travel menu or can it be done in the Model/AFR settings.

I wasn't sure of the best method of a motor safety switch. This is for electric, not IC. A switch that when set prevents accidentally knocking the throttle lever while adjustments or carrying a model to the flight line. In the end I used the Throttle Cut in the Linkage menu setting the cut position to 17%when switch SF is on. I know this only becomes active if the throttle stick is below 1/3. I thought of the Motor setting in the Model menu but wasn't sure how that worked. The other idea was to use a condition and set the throttle curve to a flat line of -100 when the condition is active. Would I use the same method for a motor inhibit on a helicopter also?
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Apr 22, 2012, 11:57 AM
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DonA's Avatar
The 14MZ, 12FG and 8FG have a built in programming function for aileron differential. See page 81 of the 12FG manual. No need to try to program differential thru End Point or AFR.

Apr 22, 2012, 01:45 PM
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Thank's Don. Thats another new thing I have learnt. It also has the advantage that can be changed with conditions whereas using the linkage/travel method I had used can't.

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