|Picture one: Testing the motors on the first version of my new H4|
- The Frame (in most parts)
- The batteries (still flying my heli)
- The ESCs (now with new firmware).
- Added two axis gimbal
- Exchanged landing gear
- New motors & props (best decision!),
- New flight controller (second best decision)
- And added/modified many other parts.
- Getting the quite heavy flying aluminium clump a little lighter without losing too much frame stability
- Reducing EMC (= Electro Magnetic Compatibility) for components mounted on the main frame (i.e. for flight controller, gimbals, sensors, telemtry, radio, …
- Upgrading and tuning propulsion components for squeezing out a little more flight time
|Picture two: drill press vs. aluminium bar|
|Picture three: finished with drilling all the small new holes|
It's a good advise to deburr the sharp rims and chips of the drilled wholes before you mount them back into the frame.
|Picture six: Escs within the Frame|
|Pictures seven: Mooving the ESCs to the outer arms|
- Moving a source from very bad EMC interferences which were present along the long 3 phased motor wires through the whole frame to the outer arms of the multirotor.
- Achieving a way better cooling for the ESCs. This improves the lifespan of the electronics.
- Saving quite an amount of weight in copper! You don't have to run 3 wires from the frame to the motors, but only 2 from the power distribution board to the ESCs. This means 4 very long copper wires less flying around. Additionally in my case: Saving many many connectors! Because I had every "high power" connection in my H4 equipped with small banana plugs. Simply unnecessary!
|Picture nine: saving a lot of weight in copper|
|Picture ten: lightened and upgraded quad|
|Picture eleven: Closeup of rear with BT telemetry, UBEC and APM power sensing module|
|Picture twelve: Closeup of camera gimbal at the front of quad|
|Picture thirteen: H4 on the bench at the flight field|
|Picture fifteen: Quad on bench at flight flied|