Scale Hughes 500MD Defender NAZA-H T-Rex 600 FPV Build

[Njoro]

I have 2 fuselages larking in my loft workshop that will take a T-Rex 600 mechanics, I've decided to start with the Hughes 500MD to see how I get on.

Parts required:
1 x Scale Fuselage.
1 x Second-hand T-Rex 600E
1 x 5.2Ah 22V lipo
1 x 7.4V 3Ah Lipo
1 x UBEC
1 x DJI Naza-H Gyro
1 x DJI OSD, in hand; I'm yet to test it to see if it will work with Naza-H.
1 x FPV camera, I have a choice of 5V or 12V
1 x Flybarless Head
1 x Set of semi-symmetrical 700mm carbon rotor blades, in hand.
1 x EzUHF RX, optional
1 x EzUHF 5.8 VTX.
1 x 2G4 Vtx, optional

Came with the helicopter:
1 x Set of carbon tail rotor blades, binned they are too short and they are chipped.
1 x Set of Maniac 600mm carbon main blades.
1 x 100A ESC came with Helicopter.
3 x Futaba S9252 coreless servos.
1 x Align DS655 tail servo.

3D Printed Parts:

1 x Naza-H housing
1 x EzUHF RX and 7.4V lipo combined housing.

;D

[Njoro]

Drawings are done and the first print just came off the printer.

[Njoro]

Hot Off the printer.

Original part.


Printed.

[Njoro]

"A bit more progress"

The loser the FC is to the CG the better the overall perfomance.










Next; I've also decided to change the belt drive to a torque drive which should make the installation into the fuselage easier.

[Njoro]

Check this out.... :)


https://youtu.be/ebRtDXdZwu4

[Njoro]

I've started the mock-up now and in the process of printing a mounting spacer.

The fuselage

[Coyote]

The H looks like it takes a lot of stress and bills out of the whole process :)

[Njoro]

The H looks like it takes a lot of stress and bills out of the whole process :)

Hi Ian

It's really assembling, and printing stuff that is usually velcroed in place; I've printed a few more bits and I'm nearly finished with the Gyro setup.
I had an issue with the flybarless head which has snap links that only go one way, which has meant the blades are out by 1/2 a turn. Align doesn't make the turnbuckle for the old T-rex 600 which has longer pushrods, I'm looking at other alternatives.

PS I've been unable to upload pictures for some reason, I'll try later though.

[Njoro]

The battery mount brace is done now but there is a little more work to be done.


I originally had the Hirobo GPH346 in this body which has a wider footprint hence the 3D printed adaptor brace at 100% infill.


A larger GPS module off one of my copters has found a new home, this GPS is much faster in acquiring satellites than the DJI one.

[Njoro]

Hot off the printer a swashplate leveller a critical part for setting up in the GUI

[Njoro]

I came across these spirit bubbles in the workshop, the MKII level is born ;D