15" props
motors mystery 750kv
battery lipo 3 s ,mAH don't know yet
he develop his own flight control he call it "LittleDuck"

In the vdo
at 4:10 he look at battery indicator in his phone he said "now battery at 11.7 volt"
at 8:09 he said "now battery at 11.1 volt"
at 10:06 he said "perhaps memory full ? the camera stop recording he press record again for record second file"
at10:15 he said "now battery very low battery at 10.7 volt"

OMG this could be a new era...

plain lipo but some new ESC...

- Battery = Li-Po 11.1V 7000 mAh (3S-2P)
- ESC = Dragon 12A ESC (Pulse Drive Firmware V2.
** Pulse Drive Motor System (Technology form Hybrid Car)

with LiIon times will be longer too...

Originally Posted by Dr.Tom

OMG this could be a new era...

plain lipo but some new ESC...

- Battery = Li-Po 11.1V 7000 mAh (3S-2P)
- ESC = Dragon 12A ESC (Pulse Drive Firmware V2.
** Pulse Drive Motor System (Technology form Hybrid Car)

with LiIon times will be longer too...

sorry I did't read the Description

Multirotor spec
- Frame = A bug flight quad rotor
- Flight control = LittleDuck MR-810
- GPS = Ublox LEA-6H
- Battery = Li-Po 11.1V 7000 mAh (3S-2P)
- ESC = Dragon 12A ESC (Pulse Drive Firmware V2.**)
- Propeller = 15 X 5.5 (draganfly shape)
- Radio = MC-500

Technical spec
- Flight weigh = 1.1 KG
- Current Consumption = 3.2Ah
- Power Consumption = 40 W

** Pulse Drive Motor System (Technology form Hybrid Car)

My deepest respect, that is far ahead of what I am doing.

27,5gr/W is outstanding, close to extraterrestrial.

To be honest I cannot believe this. If I see this frame, there are for sure 100-200gr to be shaved off, with my batteries, he would fly close to 4h.

best regards
Ferdinand

I linked this topic in comments of his video,
it would be VERY good if he coud join here and discuss a bit...

like you also noticed, it doesn't seem to be super light built, and common batteries also(LiPo)..
but less than 1A per motor is good.
...trick seems to be in ESC's... hardware or maybe even only in firmware!

hope we will get some more info

Compare PWM ESC & Pulse Drive ESC (2 min 31 sec)

If that is finally a sine wave esc this is a new era. The sine wave esc is far more efficient a part throttle settings. Years ago I had a discussion with Steve Nue regarding esc's and he mentioned the far superior controllers used in hybrid cars and full size aircraft. I will look for a link.

Originally Posted by EndOfDays

My deepest respect, that is far ahead of what I am doing.

27,5gr/W is outstanding, close to extraterrestrial.

To be honest I cannot believe this. If I see this frame, there are for sure 100-200gr to be shaved off, with my batteries, he would fly close to 4h.

best regards
Ferdinand

Originally Posted by milo12

If that is finally a sine wave esc this is a new era. The sine wave esc is far more efficient a part throttle settings. Years ago I had a discussion with Steve Nue regarding esc's and he mentioned the far superior controllers used in hybrid cars and full size aircraft. I will look for a link.

This 2h video from far east stinks a lot

A 15x5.5 prop spinning at 2500rpm generate 300g trust but by physics need 20w power

So with ideal motor he will need 20w per motor, so 80w for stay in the air.

It is claimed to consume the half of what the 100% efficient ideal motor would be able to do.

Either he was cheating, or he is in a thermal environment for making the test ... so again cheating.



ps: Also why did use 750kv motor when he need total 2500rpm ? 1S lipo would be more then enough for get up to 2500rpm needed for hovering ...

Also why did use 750kv motor when he need total 2500rpm ? 1S lipo would be more then enough for get up to 2500rpm needed for hovering ...

ok,
but you are comparing KV/V/RPM math of our 'standard' esc's with this 'new' ones,
maybe there is needed more V for same RPM, but for shorter bursts, so average watts are so low?
guessing only...

Originally Posted by Dr.Tom

ok,
but you are comparing KV/V/RPM math of our 'standard' esc's with this 'new' ones,
maybe there more V is needed for same RPM, but for shorter bursts, so average watts are so low?
guessing only...

Why a more efficient esc should make spin the motor slower .. if motor is 750kv ... with super esc I would expect even more rpm per voltage ...

Other option could be that he did rewind the motor.

But ... for me it is looking 99.99% a cheat video



ps: Per my tools for produce 300g trust per motor with 15x5.5 prop .. it is needed 20w ... he claim to use the half ...

about rpm/V... how do you know he was flying at 100% power?
maybe he wanted to hover at very low throttle, for better efficiency of his ESC's?

There is a RcGroups member with the same name as the video post.

https://www.rcgroups.com/forums/member.php?u=284578

I sent a PM asking him to start a new thread and discuss his flight.

Originally Posted by Dr.Tom

about rpm/V... how do you know he was flying at 100% power?
maybe he wanted to hover at very low throttle, for better efficiency of his ESC's?

It just make no sense however you want to look at this stuff

Too many things stinks on that video

Originally Posted by milo12

There is a RcGroups member with the same name as the video post.

https://www.rcgroups.com/forums/member.php?u=284578

I sent a PM asking him to start a new thread and discuss his flight.

He is a bussy man, he is a pilot and an inventor I'm not sure he will come and discuss here in RcGroup he rarely post on our thailandmultirotor facebook page, but it will be honor if he could come and discuss with us

If everything checks out he will soon be a very rich man too.

Is this the same technology as what the MK guys are doing with their ESCs? They are releasing new ESCs with braking which sends the energy back into the battery.
I'm loving the advancements we are seeing come to light. Ferdinand, if anything you are the driving force around here to pushing the limits on what people have a hard time believing, bravo!

MikroKopter- BLDC V3.0 SpeedControl (4 min 47 sec)