Hello everyone
I recently build an RC plane using Foam and balsa wood
But my plane is not flying when I keeping 0.75 thrust to weight ratio
Can anyone suggest me to change in the plane
My plane weight is 710 g, Prop is 10inch, Battery 2200mah, Wing span 1.2m, Motor 1400kv
1. How did you figure that you have 0.75 thrust/weight ratio?
Did you measure the thrust?
2. What does ‘not flying’ mean?
3. Even an Airbus 320 has only about 0.25 thrust/weight
4. Remove the prop. Then test fly from a hand launch. Will identify whether the problem is with the power or the airframe
5. I have two models of about 64” span, similar to yours in size.
My Sunbird, which weighs ~450gms, cruises easily at 25watts, and flies at just over a walking pace.
My Pilatus B4, which weighs ~900gms, has a 350watt motor, can exceed 100kmph easily, (you can hear the whistle from the wingtips!) and is impossible to land in a small space.
You can see their flights either by searching on this forum, or bysearching on Youtube for posts by andiyerlko (my wife)
6. Please also see one of my old posts “how much power”. I’ll search and send a link.
7. Meanwhile, to get meaningful answers, you have to tell us more details. Like built to an existing successful plan or your own design, wing area, specs of motor and prop etc.
The point is to experiment. Wish you all the best with your experiments...
Regards