For the above drone arms can be extended for using with 4008 motors and 17.5 inch propellers - without the need to change other components (battery, FC, ESCs, etc).
The central part is a module and arms are modular.
I believe this is the first in history extendable modular drone.
Assembly finished today.
The âSpiderâ drone (on the right) flied successfully and very stable.
The EDF drone (on the left) had static tests because the needed 10Ah 6S 30C will be available tomorrow and we had to use 12C battery which gives only 50% of the power.
After few tests it seems that one of ESCs got burned. I wonder if iFlight 4-in-1 60A was good choice for these motors - they take 58A max each.
Everything gets hot. And this 4-in-1 ESC does not have any heatsink.
Tomorrow will try spare ESC and see if it gets burned.
The interim outcome is that the drone on the right is commercially feasible, due to the following advantages comparing to normal F450 setup:
Cheap frame
Very strong frame
Less components
Higher performance
Quick assembly
Repairable very easily
Strong and stable landing gear
Easier and quicker access to electronics
Modular
Expandable
Looks great
Easy to assemble
Quick disassemble - the motors are removed by loosening (not even fully unscrewing) only 1 screw - then it slides out easily.
Disadvantages:
Slightly higher weight comparing to plastic F450
Needs more expensive motors (Sunnysky 2216) and larger battery (5500 4S) - also more expensive.
Generally it is a recommended design (with no PDB and 4-in-1 ESC) using 2020 aluminium profile - it has been optimized after several iterations - I will publish component list (Aliexpress) within few days.
Reg. the EDF drone - it still did not fly properly.
It seems there are 2 things:
It needs dual battery setup via ideal diode/2 battery PDB
It needs thicker ESC battery wires.
Current power train canât handle 150-250A with 1 battery and 10 AWG main wire.
However even considering that - it seems battery dies very fast.
I guess it just seems should be in a MISC section or a Drone Forum maybe? Not knocking what youâre doingâŚitâs great⌠I was just wondering what it had to do with Emlid products.