new to 3D flying

[jimmy]

james laurel,

hi im new to flying 3D and cant work out how you waterfall any ideas? or any other ideas on how to do 3D tricks?

thanks

[Brian Cooper]

The Waterfall: This is where the model fully stalled and rotates (pivots) 360 in outside loops in pitch axes, with wings level, with hardly any forward motion or altitude alteration.
It looks like it is doing forward rolls.

The first requirement is a suitable 3D model that can do it. Next, it needs to be properly powered, and a power to weight ratio of 2:1 is fairly normal… that’s twice as much thrust as the weight of the model. The throttle response has to be 100%.
Typically, the model will have a light wing loading and a rearward CG location, and the elevator control deflection can be over 70 degrees. Digital servos are an advantage here for their superior holding power and to prevent blow back from a powerful prop-wash.

The flying skills required start at being able to prop hang, as this is where the manoeuvre begins and keeps coming back through with each “forward roll” rotation of the waterfall.
To keep the model in the same piece of sky needs careful use of the throttle and elevator as the model pivots round its own axes. And then you need to get clever on the rudder and ailerons to keep the wings level and to counteract the engine torque every time the throttle is pumped.

A good model should be able to “flip” almost in its own length.

Good luck with the practice.

B.C.

[jimmy]

thanks Brian thats really helpful the reason i could not do it is my models elevator throw is not big enough

thanks James

[jimmy]

any ideas on how to do any other 3D manuvers?

from James

[Brian Cooper]

Yeah, one or two...!!
But there is no exact recipe for stick movements to obtain a desired result with an aeroplane as there are too many variables, like: wind speed and direction and entry speeds to manoeuvres, plus rpm at entry, varying stick throws throughout manoeuvres, etc., etc..
It is a science all of its own.... but huge fun experimenting and exploring what an aeroplane can (or can't) do.

B.C.

[jimmy]

thanks again Brian

from james