faisalk

Yesterday was my first experience with an Extra with 46 size engine and 10x6 propellor. The plane flew well except for 2 problems:
1.When I give full throttle from idle for takeoff the nose falls and hits the ground.
2. While landing the plane does not slow down and falls vertical like a rock rather than gliding like a plane(no wonder I broke the landing gears)

Any advise on how I can tackle these 2 problems?

blue62

My Feedback: (3)

you have to hold up elevator on takeoff to keep the tail down untill the speed picks up enought to fly the plane

this plane has a very low glide ratio wing.. its meant for speed not for floating like a "plane" did you just move up from a flat bottomed wing? they glide much more that this one will

faisalk

I did hold up elevator but it still falls on its nose. I know its not suppose to glide like a trainer but still it should not fall like a rock it should atleast ide a little.

CHassan

My Feedback: (13)

Grass or hard runway? If it's grass, get bigger wheels. Either way ease into the throttle, don't slam it forward. Also check to make sure your engine is not pointing down to much.

As far as landings go, some models have very high stall speeds. If it's not stalling then you might want to check your wing and stab incidence, along with your thrust line.

JimRoss

All good advice, no need for me to put my two cents in here.

BTW, My 74" Extra 300 XS glides like crazy. I usually cut the throttle to about 3 clicks above idle on the down wind leg, turn on to base and then final approach with throttle still there and then start jockeying throttle to maintain airspeed on landing. Cut throttle to idle just before touchdown and it just lands perfect every time.

91zulu

My Feedback: (2)

Sounds to me you might be a bit nose heavy, Which extra do you have ? They are not floaters but they do have a bit of a glide if you keep the speed up a bit. Check the balance again you may be off.

rockmon

The only Extra I have flown was a 60 size Kangke and it would float as long as the nose was pointed straight down. (hehe) That Extra had to be flown right down to touchdown at a pretty good clip or it would stall. It did give me a lot of practice at fast landings and once I got used to it, it made some of the most beautiful scale like landings that I have ever made and of course I loved it, so it crashed.

PeterC

My onlly experience with this type (and size) Plane was with a Moteltech CAP 21. It flew great if the fan was still turning but if it ever went dead stick it fell out of the sky like a clump of grass.
I think the smaller aerobatic models have much too high of a wing loading to glide at all and must be flown right down to dead stop.
As to nosing over on takeoff; increase your elevator throw quite a bit and then use negative exponential (about -25% or so) so you have lots of elevator for take off but it is still smooth in flight.
Have fun.
Peter

tiggerinmk

Doesn't -ve or +ve depend on the radio brand? I use +ve exp on a JRXP8103. Is the intention to soften the throw around the center of the sticks?

David Cutler

too nose heavy?

-DC

PeterC

My Prisim 7X uses negative exponential for a soft center so I guess different manufacturers have their own methodology.
Peter

David Cutler

Hitecs use negative expo to soften in the center. I think you'll find JR are the exception, using +ve .

-DC

91zulu

My Feedback: (2)

yep nose heavy...' falls vertical like a rock" if it was all heavy it might have stalled into a spin. A nose heavy bird nose drops down and require a lot of elevator to hold it up. I say that because he also stated that it doesn`t slow down all an indication of a plane that is nose heavy.

Geistware

My Feedback: (16)

Sounds like your plane is nose heavy. How much elevator is needed when you fly inverted?

faisalk

Virtually no elevator is needed when i fly inverted.

Geistware

My Feedback: (16)

It doesn't sounds nose heavy. DOes your pitch change with engine speed? (thrust) if so, then your engine may not be at the right angle to the center line of the plane.

frieshoo

My Feedback: (20)

Double check the balance...
check the down thrust line of the engine...
check the elevator trim... (sounds like you could have some down trim in the elevator)...

fly at a click or two below half trottle... trim the elevator (if needed)...
I have a Kangke 40 Extra.. and it has small wheels... Our field is a grass runway, and it takes some work on takeoff (to prevent the nose overs).... I think I will take the wheel pants off, and try larger wheels.

davo74

My Feedback: (1)

i have a kangke cap232 and it lands better dead than it does running, which is good, it has an asp 1.08 up front.. runs good most of the time