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Permalink Reply by David Leigh on February 1, 2012 at 5:00am

I had a similar problem last week.  I found that I had one motor down on power and replaced it.   But I found in previous experiences a slow increase in throttle at the start of flight is does not do as good a take off as a more aggressive setting.

David

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ModeratorPermalink Reply by Graham Dyer on February 1, 2012 at 11:04am

I think your expectations of how your quad will fly may be a little high, it generally has to be controlled most of the time especially if it hasn't been tuned, even then expect drifting when hovering and constant throttle changes to maintain the same height. A quad is easier to fly than a RC helicopter but only just. A few seconds normally is the most you can take your hands off the controls, unless in loiter or one of the other navigation modes.

Throttle slowly is the correct way to take off, I normally throttle up until it just lifts off, controlling it's attitude all the time, I then keep it low in ground effect for a few seconds just to make sure everything is fine and then increase the throttle slowly until it's at head height and out of ground effect. It flies a lot better up out of ground effect.

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Permalink Reply by Haikal Pribadi on February 8, 2012 at 9:46pm

thanks for the input guys..

I manage to fly it last week (then took a break from it for a while)

So Graham, I completely get what your saying now. So when you say "... if it hasn't been tuned", how can we tune it?

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Permalink Reply by Dusty Starbucks on February 9, 2012 at 12:18am

I had the same basic problem, but mine was a miswiring of the power distribution board to the ESCs. Once I fixed it, I took off nicely. No tuning has been done other than trimming it out on the radio. I don't think your expectations are that high or you are asking too much. It should take off and your tuning (other than trimming) should be done once you see adjustments it is making that are either overshooting and ringing or not as quick as you would expect. Fundamentals like hovering and other manual controlling shouldn't require massive tuning.
If you are new, I wouldn't even tune it for quite a while, but concentrate on build quality. My two cents which may be only worth a cent and a half after I ran mine into the ground. Maybe less. But that was a comedy of errors. Cheers.

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