Help! What to use for setting CG?
- Thread starter WillL84
- Start date
CappyAmeric
Elite member
I rarely add weight, but if battery position does not fix it, you can use lead fishing weights.
Or used weights from a tire shop, they are free. Anything of weight will work.
Also could try a larger battery.
On some planes I’ve made the nose longer.
CappyAmeric
Elite member
I made a longer nose on the Arrow, Bushwhacker, Versa Wing, and Twin Bee just achieve an acceptable CG. I added weight to the nose of my Flerken, but when I build my next Flerken I am going to lengthen the nose.
Coming from full-sized aviation, it rubs me wrong to add unproductive weight to the nose just to balance. In full-sized aviation, we consider that inefficient.
Monte.C
...
ColoFlyer
Active member
+2
i also add a longer nose to help with balance. I added length to my Bushwacker, Simple Stick, Duster, Goblin, and Explorer. Depends on the plane, but usually an extra inch or 2 fixes the CG problem and allows the battery to move forward.
I just cut off the nose then cut out a new one with the added length I want, then use a couple of small skewers pushed in and glued into each side for strength.
Agreed, I should be more specific, I never add unproductive nose weight.
On my Versa, a pusher, I move the motor forward to achieve the CG. This allows me to have the battery in the plane, not way forward where it will be damaged in a crash.
Flightspeed
Convicted Necroposter
Adding nose weight sux. In one of my gassers I have about a pound lol. Too much work to lengthen nose tho.
Monte.C
...
How good a design is it, really, when we have to make so many basic design modifications just to get it to fly?
Or are we just using batteries far different than what was originally used? The last thing I would want to do is add unnecessary weight.
ColoFlyer
Active member
I think you are probably correct that there is a alot of very different batteries that change the CG. Also some of us to alot of modifications to the planes so that it is not even close to the original design, like Landing Gear, Motors, ESCs, Paint, Decals, changing the Servo Positions and such. These modifications along with how much glue we use and where can also mess with the balance.
Taildragger
Legendary member
because it is inefficient, even in RC
Monte.C
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See, something's messed up here. As far as you can see you're doing the same as what they did and what they say to do, but theirs balanced as far as we're told.
Maybe we're being lied to. Maybe they're the hardcore Leftists hell bent on destroying democracy...
WillL84
Active member
See, something's messed up here. As far as you can see you're doing the same as what they did and what they say to do, but theirs balanced as far as we're told.
Maybe we're being lied to. Maybe they're the hardcore Leftists hell bent on destroying democracy...
I've got no idea lol. Maybe I used too much hot glue for the tail unit? Also the V2 has the two extra vertical stabilizers on the rear horizontal stabilizer but that shouldn't add much I wouldn't think.
Monte.C
...
Yeah it's weird. I was gonna joke that maybe you used a bucket-load of glue, but I don't want to hurt any feelings.
Maybe just a little more foam and a little more glue is all it takes. (?) I try to give my designs miles of battery space because I have no idea where it'll want to be. I haven't had much hands on experience with FT designs, but I get the impression there's not a lot of play in battery placement in some of them.But I think it's the socialists trying to mess us up.
WillL84
Active member
Yeah it's weird. I was gonna joke that maybe you used a bucket-load of glue, but I don't want to hurt any feelings.
But I think it's the socialists trying to mess us up.
The Legacy has a good amount of room in the nose for the battery if you're using a twin-motor setup. If you're using a single then the motor and ESC mount to a tray that goes in the nose.
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