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Old Apr 04, 2010, 08:32 PM
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Sydney, Australia
Joined Oct 2007
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Futaba 12FG: Relationship between Servo Travel and End Point

Recently graduated to the 12FG from the 8U and I'm having difficulty coming to terms with the difference between servo travel and end limit.

I don't see the need for the two of them - if you know the the servo throw limit or the mechanical linkage limit (end stop) which parameter do you adjust, servo travel or end limit parameter? If you adjust the end limit parameter (say), then what do you do with the travel parameter, leave at 100% or 140%?

But if you adjust the end stops with the servo travel parameter, what do you leave the end limits at?

Thanks in advance...
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Old Apr 04, 2010, 10:04 PM
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DougV's Avatar
United States, FL, Miramar
Joined Dec 2007
1,245 Posts
I'm going to quote something for you here:

"Travel" is the amount movement you get when you move a control from one extreme to the other. So this is the full movement from one end of stick travel to the other, plus trims; full movement from knob rotation's one end to the other; or a switch from one side to the other.

When you add mixes, such as V-Tail, you can add the travel amount of two channels together. This can cause problems because the servos may try to drive too far for the linkage, control surface, or the servo itself. "Limit" is the maximum amount a channel can move when it is driven above the travel amount by a mixer. Normally, the system defaults are all you need. You can make the Travel and Limit amounts larger or even the same, but it all depends upon how your model needs to be set up.

Hope it helps,
Doug.
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