Pilot rc dolphin flap setup question?

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Haden Kingsland
Posts: 11
Joined: Wed Mar 04, 2015 12:01 pm
Location: Romney Marsh

Pilot rc dolphin flap setup question?

Postby Haden Kingsland » Wed Jul 06, 2016 9:41 pm

Hi all...

I have just finished building my dolphin and need advice on final throws...as manual seems different to what I would have thought.

They say to mix varying degrees of up elevator in with the flaps, depending on flap use... Where I would have thought it should be down elevator???? as deploying flaps gives more lift?

Any help would be appreciated.


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Simon Burch
Posts: 22
Joined: Sat Aug 31, 2013 6:09 pm

Re: Pilot rc dolphin flap setup question?

Postby Simon Burch » Wed Jul 06, 2016 11:03 pm


I'm in the same boat, just need to check cg and then set throws. I've asked a couple of people but not had any figures back.


David Warrington
Posts: 18
Joined: Sun Jan 18, 2015 3:34 pm

Re: Pilot rc dolphin flap setup question?

Postby David Warrington » Thu Jul 07, 2016 11:02 pm

You will definitely find that it pitches down with flaps deployed....it felt wrong when I set mine up...but it was true!

Manual settings were pretty close TBH :shock:

Mine was the first version with NO modifications and set up as per the manual....Things may be different now :?:

Cheers, Dave.

Harry Curzon
Posts: 35
Joined: Sat Aug 04, 2007 10:58 pm
Location: Cotswolds

Re: Pilot rc dolphin flap setup question?

Postby Harry Curzon » Sat Jul 09, 2016 4:51 am

Lowering the flaps will always make the wing pitch nose down because increasing camber causes nose down pitching so if there is no other effect then the rest of the plane will pitch nose down with the wing. Tail-less aircraft rely on this for their elevator control. But other effects may reduce, balance or even overcome it. For example lowering the flaps increases the angle of the downwash and if the tailplane is effected by the downwash it will have a nose up effect. Whether the plane pitches up or down depends on the sum of many competing forces and that depends on the design of the plane and the airspeed at the time.

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