Mr Gilbert strikes again! I really like the idea of using no cal versions as tests for prospective full structure jobs. This looked encouraging from the 1st flight! Thanks Tom for showing us this. ⭐👍

Just so cool! The boxy bites I built flew great. Can’t wait, Vance!

Nice...thank you for being in the cold and sharing

SUPER!!!

Simple but very efficient and nice French model aircraft🇫🇷, great work! 👍😊😊

"And for the video, next week, Maxfliart powers an 8 foot living room sofa with Home Depot bungee cords braided together and then films it going OOS at 5 min." 😀

Real cool seeing flights on a crisp snow . Thats what i have to deal with right now ... Don't even want to test glide a new plane on the hard frozen ground . I'm waiting for the soft dry grass .

It's cool. Very nice model!

That's very impressive! Flies nicely with non-cambered ribs. Might get by with "curtains" on just the outboard struts.

Terrific !

Hi Tom!: That's NEAT! For some reason I have a fascination with those weird French airliners like the Farmans and others flown by Air Union and other French airlines! Looks like a transition to Full Cal is in order!

ive made a few boxy bipes in my time modeling, they flew nice! i like this one

@vancegilbert1958

5 ай бұрын

Thanks! How was the climb with your Boxy Bipes? What’d the climb look like?

@offtopicjes

5 ай бұрын

for me they looked clean, they had a nice level climb. @@vancegilbert1958

@vancegilbert1958

5 ай бұрын

⁠thanks, @@offtopicjes that’s what I’m hoping for too as the power goes up.

Muy bueno👍

I have sometimes suggested flat sheet test models to explore potential issues with new designs, for example, the Zerbe pentaplane, but with caveats. There can be important differences. You know how sensitive models can be to trim efforts, small differences can have big effects. Cambered wings will have different lift and drag. Full fuselages will have more drag and different moments of inertia. Moments of inertia affect stability characteristics. The offset motor and prop introduce a yaw which will not be present on the full bodied fuselage model. This model shows good flight characteristics. It is turning left. As more power is added for higher flights, it will likely bank more to the left, sideslip more to the left and eventually yaw to the left, which, in a left bank, is a downward turn. In the extreme case, the model can hit the ground, cartwheel all over the field, leaving bits and pieces all over the place. For outdoor flying, it is preferable to turn right. Initially low power flights just high enough to set rudder for the desired flight circle diameter to fit your field in the descent. As power is added, right thrust is added to overcome the effects of increased motor torque. The effect of right thrust is connected to torque, so it is the best counter balance. This is tricky, because if the plane transitions from left to right, it can stall in the straight ahead part. Sometimes the stall will be just a slight bobble, but it can also have the plane tumble out of the air, too low to recover. You want to be aggressive with the right thrust, but not too much. Too much right thrust can spiral in to the right. As in everything else, it is a matter of finding the right balance. This test model has panels between the wing struts. That helps with dihedral effect, but it is not scale. Early biplanes had curtains between the wing struts, but this plane does not. Will the eventual scale model have curtains? I suspect they will not be necessary. The upper wing is pretty high above the likely CG. It is pretty big. The lower wing is not as much distance below the CG. The upper wing will likely predominate in sideslip. The curtains extend above and below the CG, so their effect is compromised. The cabane struts are well above the CG, so that would be the best place for transparent film curtains, if necessary. Further tests can be made without the curtains.

@vancegilbert1958

5 ай бұрын

Oh my if these things how is it you are the knowing? You have make the fly as such before? You put big theoretic to make the know as appreciate however know you the next too real time test is most to define, yes? Like Fresh Prince of BelAir says “In West Philadelphia I was born and raised” which can be seen as metaphor for being one place made and other place test for real time how to make it do like my FPharman, you must agree say yes, thank you?

That plane is homely , but pretty in stick & tissue . I'd build a big one .

:)

'Promosm'

It wants to fly left

@aeromodeller1

5 ай бұрын

Right hand prop, motor torque rolls aircraft left, airplane banks left, lift points left, lift and gravity pull airplane left, sideslips left until roll due to sideslip balances left roll due to motor.

@vancegilbert1958

5 ай бұрын

so do I

@vancegilbert1958

5 ай бұрын

@@aeromodeller1Nope. Stab was inadvertently tilted causing left turn.

@tonywright8294

5 ай бұрын

What’s wrong with that ?

@aeromodeller1

5 ай бұрын

@@tonywright8294 When you go up in turns and torque, the increasing left bank and yaw will spiral in to the ground. Instead of longer flights, you get shorter flights and a crashed airplane.