greatbobby91
New member
Plans: http://docdro.id/Djk6wox
Hello!
Over the summer, I am planning on building a 112" wingspan sea plane with landing gear for land and water inspired by the FT sea duck with my gf
This is my first plane build, however i have built a 8 foot gas octocoper, custom scratch dune buggy, 7 ft RC racing catamaran and some other smaller things, but never a plane.
I'd obviously like to keep the cost low as possible
Here is the likely weight break down:
Foam: 40 sheets weighing around 110 grams each = 13lb
Aluminum for spars and glue combined weight = 4lb
Landing gear and retracts = 2.2 lb
ESCs, Servos, FPV, and general wires (no batteries) = 2lb
Margin of Error = +15 lb
So the dry weight without motors nor batteries is around 30 ish pounds.
I want to fly it really slow, so I'm thinking a .5-.8:1 thrust to weight ratio should suffice.
Therefore im guessing I'll need about 15-20 pounds of thrust, (due to their weight + batteries) and will since there are 2 motors, 8-12 lb of thrust each.
Is there any reason why a set up as such would not work?
I apologize if i've ignored any aspect as this is my first build, although I have built many other things non plane related in the past.
If anyone could recommend a motor/prop(3 blade)/battery that they really like, I would highly appreciate it!
Also any tips from experienced plane builders would be super helpful
Finally, if anyone else is planning a project over this summer of a similar scale, feel free to reach out!
Hello!
Over the summer, I am planning on building a 112" wingspan sea plane with landing gear for land and water inspired by the FT sea duck with my gf
This is my first plane build, however i have built a 8 foot gas octocoper, custom scratch dune buggy, 7 ft RC racing catamaran and some other smaller things, but never a plane.
I'd obviously like to keep the cost low as possible
Here is the likely weight break down:
Foam: 40 sheets weighing around 110 grams each = 13lb
Aluminum for spars and glue combined weight = 4lb
Landing gear and retracts = 2.2 lb
ESCs, Servos, FPV, and general wires (no batteries) = 2lb
Margin of Error = +15 lb
So the dry weight without motors nor batteries is around 30 ish pounds.
I want to fly it really slow, so I'm thinking a .5-.8:1 thrust to weight ratio should suffice.
Therefore im guessing I'll need about 15-20 pounds of thrust, (due to their weight + batteries) and will since there are 2 motors, 8-12 lb of thrust each.
Is there any reason why a set up as such would not work?
I apologize if i've ignored any aspect as this is my first build, although I have built many other things non plane related in the past.
If anyone could recommend a motor/prop(3 blade)/battery that they really like, I would highly appreciate it!
Also any tips from experienced plane builders would be super helpful
Finally, if anyone else is planning a project over this summer of a similar scale, feel free to reach out!
