johnls

I braved the wind and cold yesterday to maiden my new Fei Bao Panther. The Cof G is 100mm (4") back from the leading edge and it flew on rails with no trim needed and neutral elevator. I was suprised, therefore, when on rolling it inverted, it needed a considerable amount of down elevator to stop it diving to the ground. I am reluctant to move the CofG back as it feels so good other than inverted. Is this a characteristic of this plane?








John

In the Haze

Do you maybe mean down elevator?

basimpsn

My Feedback: (5)

That's why it was diving to the ground [X(] you are lucky

smchale

My Feedback: (67)

Did you check the incidence of the wing vs the stab? How about the thrust angle of the exhaust pipe?
I suspect with the dihedral and the fact it's not a fully symmetrical wing you will need to hold some down elevator inverted. How much would you call 'considerable'?

johnls

Thank's for pointing out my typo. I guess it needs about half travel which equates to 1/2".



John

megafly

I Have a Feibao too! Nice plane!



My CG is set as per mannual and I do need a lot of elevator when inverted I think it's because of the wing design, other than this its a very nice flyer and flys very scale.

What engine are you using? I'm using a P120 SE on mine.

Regards!

mick15

I think the answer is there John it's probably the section............My A10 is the same it definitely isn't tail heavy though.

m

Dave Wilshere

Its a combination of the section and tailplane position. When its inverted with a slight negative angle of attack the tail is slightly blanked, the big fat fuse and wing root profile effect it too.
The Airworld Panther I fly for RJ is the same. I set that up with 15% more down than up so that the stick position is more balanced.

Dw

johnls

Hi all. Yes I think it is how it is. OK if your ready for it, gave me a shock first time. I,ll try it again tomorrow. P120 powered( overpowered, the throttle is shut a great deal!!)
Are you out to play at the weekend Mick?




John

mick15

Unfortunately not John I’m under pressure to get the Sea Fury through the LMA. Half hour left to do.

m

John Tancock

That's one i want to see!
Has it got the folding wings fitted as before Mick? ( sorry I know it's the wrong thread, But hey who gives a S41T!)


John