Odd incidence set up query

[Adam C]

Hello all,

Im currently building a nice grunau baby 2 from Island Models . 1/4 scale.

Slightly confused by the set up employed for incidence.

Wing section is HQ3512 set at 1.5 degrees, all fine.

Stab is set at 0 degrees along main longeron. Should this not be matching the wing ?

The designer is adamant its fine but as their are no recorded flights of this design on the internet, Im not sure...


Any thoughts??

[Cliff Evans]

Hi Adam, I would trust what the manufacturer says, the model has been built and flown as is for a good while now. If you change the incidence of the tailplane, it will not "sit" correctly in the air. I have the plan and have looked at it and compared it to Cliff Charlesworths plan which also has the tailplane set at 0° whilst the wing is set at 1.5° and I would certainly trust Cliff's plan.

[RobbieB]

Adam, flying an HQ3512 at 1.5° will be just fine and give a good 'sit' in the air with that incidence relative to a 0° tailplane setting.

[Adam C]

excellent thanks guys.