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Freewing 90mm F-16 - Thoughts anyone?

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  • #81
    Freewing 90mm F16 CG

    The manual is not very clear but is the balance point measured from the tip of the wing? I want to make sure before i fly that i have it correct. Upside down or not for balancing?

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    • #82
      From the wing root, where the wing meets the fuselage and gear down. Balanced up side down, although as its a mid wing this is not critical.

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      • #83
        It's real easy to balance, where the wing meets the fuselage at the very leading edge tip, just measure back from there, I have over 100 flights on mine and it has a large CG range, but here is the problem with that. If you go with the stock CG from the manual anywhere in that range you will find that the F-16 will rotate nicely, the problem with the CG back to far is, it likes to float and pitch up on landing, with the CG forward, it doesn't rotate as nicely, kind of jumps off the runway and it will drop the nose more in the turns but flies great nose heavy, not as pitchy and lands so much better, cut your power on final to low throttle and the nose will pitch up, hold a little up elevator at a nose high alpha and use your throttle to adjust your sink rate and she will glide right in to a nice flare. It will take you a few landings to get it right but once you get it you will love the F-16. Here is a picture where I fly mine, comes out about 110mm-112mm, just put your fingers over the wing spar hole where my pencil is pointing, I balance mine upright and gear down, fly it this way until you get used to landing it, if you fly it tail heavy as per the manual, you will find it hard to land. Your fingers will make a small indent in the foam, makes it so easy, set it on the ground reach under it and feel the holes and waalaaa, adjust your battery to your liking on each flight.
        Attached Files

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        • #84
          Originally posted by DCORSAIR View Post
          It's real easy to balance, where the wing meets the fuselage at the very leading edge tip, just measure back from there, I have over 100 flights on mine and it has a large CG range, but here is the problem with that. If you go with the stock CG from the manual anywhere in that range you will find that the F-16 will rotate nicely, the problem with the CG back to far is, it likes to float and pitch up on landing, with the CG forward, it doesn't rotate as nicely, kind of jumps off the runway and it will drop the nose more in the turns but flies great nose heavy, not as pitchy and lands so much better, cut your power on final to low throttle and the nose will pitch up, hold a little up elevator at a nose high alpha and use your throttle to adjust your sink rate and she will glide right in to a nice flare. It will take you a few landings to get it right but once you get it you will love the F-16. Here is a picture where I fly mine, comes out about 110mm-112mm, just put your fingers over the wing spar hole where my pencil is pointing, I balance mine upright and gear down, fly it this way until you get used to landing it, if you fly it tail heavy as per the manual, you will find it hard to land. Your fingers will make a small indent in the foam, makes it so easy, set it on the ground reach under it and feel the holes and waalaaa, adjust your battery to your liking on each flight.
          IDK man, that looks like a REALLY nose heavy cg to me...

          You must have an extreme amount of up trim in your elevator position to fly that far forward.

          I ended up between 123-126mm... Much further aft.

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          • #85
            Originally posted by Alpha10 View Post

            IDK man, that looks like a REALLY nose heavy cg to me...

            You must have an extreme amount of up trim in your elevator position to fly that far forward.

            I ended up between 123-126mm... Much further aft.
            Yeah it's nose heavy as I stated that in my post. Just a couple of clicks of up trim is needed from the neutral point and it lands so much better with nose weight, for me that is, my CG is not for everyone, if you like a neutral CG then do not try mine......

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            • #86
              hi to all, i have a f16 falcon , and i would like to switch out the stock 90mm edf. need a little more punch. any ideas? i was thinking about putting a scorpion motor in it.

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              • #87
                this is my f-16 I'm talking about.

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                • #88
                  6s? Why Scorpion??

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                  • #89
                    I've been doing some research on motors. scorpion was up on the top shelf with a few others. gotta start somewhere wright.

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                    • #90
                      yeah, 1-6s5000mah.

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