So I’ve been making helicopters for a decent amount of time, however I haven’t been able to make one that is easy enough to control. Almost all of them are unstable.
I need some help from a experienced helicopter maker on this website.
Also since I’m a mobile user I usually forced to build them small since propeller length limits.
also, keep an eye on your heli's CoM and CoL, where the CoM must always at below the CoL... if the Heli is unable to get up right straightly, we suggest you to fine tune your heli's weight until you get the heli to work right how you want it ;-)
The Gyroscope is there to help you out, to make your helis more stable, simply set the auto orient on, and then fine tune more setting there... As for the main props or blades, we have to say that by XML-mod is the only way to get it larger, but there is an alternative, borrow someone's heli, and save the main engine as your sub assemblies