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    Long Range FPV

    Flight duration is always about weight. The less mass you are suspending in the air, the longer you can do it with a given amount of power. But obviously that is balanced by the amount of energy you are lofting, the amount of thrust you can generate from it, and at what efficiency. The video...
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    Beginner's Hubsan X4: Difficult to keep it at a certain height

    I don't believe very small quads, at least the ones for sale today, CAN be trimmed out. With little mass it takes less variance in thrust from any prop to send it off course. Every component in a <$60 quad is specd. right on the edge and every corner is cut for weight reduction. Brushed...
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    Long Range FPV

    A recent HobbyKing video introduces their line of "extreme" motors intended to get you flight time by using very high voltage batteries.
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    First Quadcopter build started - video diary

    Battery connectors are polarized, so how did you manage to connect it backwards? I'm glad you like the SunnySky motors. If I have the scratch, I'll never buy anything else. I remember when I first changed the battery connector and made the mistake of cutting both leads off the old...
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    Noob Quadcopter Builder.

    It's a 500mm quad frame, so lower kv will result in longer flight duration, and better payload if you want to use this setup later.
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    first build help!!

    It's not really a "learner's" frame, is it?
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    Noob Quadcopter Builder.

    Well take a look at the motors I linked. Stick with the nice cheap plastic props. And don't worry about buying a couple of 3S Lipos. They work well as ground station power after you build a 4S or higher quad.
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    Noob Quadcopter Builder.

    I really like Afro ESCs for the SimonK firmware. I'd offer that generally NTM motors are not known for having the most reliable bearings around. If you look at comparisons online, they degrade quite a lot quicker than most others. I'd go with anything else! I'd even go with a little lower kv...
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    APM (and all flight controllers) logic with regard to sensors incl. GPS

    With regard to the phenomenon known as "Fly-away", where a multi-rotor craft seems to just take off on a strange course and crash or get lost, I think the most likely culprit is the GPS. I have seen "fly-away" happen on the bench, using an APM 2.5.2 controller and LEA-6H GPS module. With good...
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    Can GPS Software be Programmed?

    You can do that with APM using waypoints.
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    I would think that shaped wire landing gear would be light , durable, repairable & shock absorbing S

    I can see how four legs, where each leg has two nylon parts with a piece of, say 14ga. spring wire in a 'U' shape in the middle, would remain fairly light, but also absorb the shock of landings. One nylon end would be attached to the frame, the u-shaped spring would be oriented horizontally...
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    Hubsan X4 h109S pro or DJI phantom 2?

    There are a lot of choices with those features or potential features. It sounds like you want something ready-to-fly. There's a guy right here on this forum who builds a Hornet! Heavily integrated units like the DJI look neat, but they leave very little opportunity for upgrades, and few...
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    New Build Advice

    You'll also need a charger. I like the Turnigy AccuCell 6, but there are plenty to choose from. HobbyKing has a lipo finder applet on the right side of their main page. A 450mm quad works well with anything between 2,200 to 3,000mah. You'll wind up buying more than one battery, and 3S LIPOs...
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    New build, FPV problems

    At least you know what the problem is, and you have a pathway to improved short and long range video quality. It could be something wrong with that receiver you can diagnose and fix, and if not, any problem you can fix with a few bucks isn't really much of a problem.
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    New build, FPV problems

    I looked further up the thread and saw where you ordered, but wasn't sure what transmitter(s) you got. I'm not sure what the reception angle of the crosshair antenna would be, but if you're on target, I'm surprised it isn't excellent.
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    New build, FPV problems

    Wow! You don't mess around man! That rig should get you out to several MILES! How far are you flying? And the last I heard you had 5.8GHz tx on your quad. What do you have now, and how much power is it pushing? The crosshair is more directional than the cloverleaf. They're usually used on...
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    Long Range FPV

    DragonLink makes good long range gear. Most people who do long range do it on a fixed-wing platform. I'm not sure how you'd get a quad to fly 10km anyway.
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    HELP I HAVE NI IDEA WHAT I'M DOING!

    No. All you have to do is calibrate the ESCs using a simple procedure, but you have to do that with any of them. The only reason you need to program them is if you want to upgrade the firmware or a different profile, and that's a really fine-tuning sort of thing. On the battery, visit the...
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    Nano Q4 Quadcopter

    This looks like several that Flyin' Ryan reviewed on YouTube. I like his reviews, but he flies them in his kitchen which is a little odd.
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    New build, FPV problems

    It sounds like you're having fun there. Yes, 5.8GHz provides less range for the same power than 1.2GHz, and doesn't penetrate trees well, or buildings really at all. My 1watt 1.2GHz tx is a beast, and even my 1/2 watt transmitter gives me everything I need. I also use CP antennas. I'm looking...
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