landing approach -> elevtor authority
 

on my new funfly third flight during final approach 10 feet above ground the elevator lost all it's authority. the only way to gain back control was adding more power and landing much faster.
it's seems to me that plane has some forward cg (turns required much of elev to keep level but on the other hand inverted flight required just third down stick)
that day was a bit windy all course wind (landing direction).

As i tried to find out before is it all just because of the forward cg ?

thanks

RE: landing approach -> elevtor authority
 

Sounds like forward CG and elevator throw. The more forward the CG the more throw you need and vice versa.

RE: landing approach -> elevtor authority
 

flypaper is correct, too nose heavy, move CG aft.

RE: landing approach -> elevtor authority
 

Ditto

RE: landing approach -> elevtor authority
 

d3u10, what type of funfly is it. Thick wing? Could it just be that it slowed too much in the wind? That said, a forward cg will require more elevator.
Ed M.

RE: landing approach -> elevtor authority
 

thanks guys

I added 10 more g aft so by now i have about 30 g aft .
it flies better at this point but is seems 10 g more at least are required

RE: landing approach -> elevtor authority
 

Do a search on google or the GLiders and Sailplane forum here at RCU for "dive test".

The sailplane guys use this test for setting their balance point close to neutral. The same test can also work for your funfly. Set the engine power to about 1/4 revs and trim the elevator so the model is happy flying hands off in level flight then do the test.

Set your balance and retrim the elevator until the model either does not try to tuck or pull out or just trys to pull out very slowly. That's where you want it to be for a fun fly. It'll fly like it's balanced on a tightrope at that point but you'll have LOTS of elevator authourity. If you find it wanders in pitch move the balance forward very slightly to regain some small amount of pitch stability. Not too much though or you'll be back where you are starting.