ever wanted your "heli" to fly smoothly?

then here is the solution!

i recomend clicking on the link to the post rather than reading the pasted comment here,due to it being more well organised.

all credit goes to AirCrashInvestigationFLR

here is the post

here is the comment

VVV

Too easy!
1.
The first thing you want to do is a Long and a large helicopter.
Cant do it? Go to 2.1

2.
Now Carefully Place a Helicopter Rotor In the Center of mass. Use fine tuner (or the one in game) to nudge it perfectly in the Center of mass.
2.1.
As we talked earlier, if you cant do it go scale the rotor to XML: scale | 0.5,0.5,0.5 as it is half times smaller. Or just use the Small Rotor.
3.
Now go place the Tail Rotor in place. If it made your Helicopter Unbalanced then XML: massScale | 0 as it will make it Weightless.
4.
Go place the wings, i recommend flat bottom. Start with the tail, Horizontal Stabilizer and Vertical stabilizer. Then the wings in the front. It doesn't have to be that large.
5.
Place the gears. Add a gyro with XML: Gyroscope/ stability | 77
XML: Gyroscope/ speed | 11 Then put it in an activation group so that if you start having trouble with the flight, go activate that Group.