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Sep 27, 2021, 01:49 PM
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T-motor vs Flywoo 1404 motor efficiency - too good to be true?


Hi

I've just build a Micro Apex. I wasn't sure if I wanted a 3" or 4" quad and with this frame I could decide along the way. I was a bit quick to decide on a 1404 3800kv size, because that seemed to be the most popular choice for 3.5" quads. I've been happy with the other T-motors that I've used, so I just bought the motors from T-motor without scanning the marked.
I've finished the build and are happy with it. I ended up with using 3.5" props with the 4" arms.
I get about 6mins of calm flying or 4mins of aggressive flying with 4s 520mAh. (239g AUW)

But then I stumbled on the Flywoo site and their 1404 3750kv motor.
When comparing the efficiency of the T-motor and the Flywoo at a thrust of about 270g with HQ3*3*3 props, the T-motor consumes 195W where the Flywoo only consumes 71W.
Based on this alone, the T-motor seems like a terrible choice.
Am I reading this the wrong way, are the Flywoo specs a big marketing lie or are they just simply more than twice as efficient!?
...or are there other aspects that I'm not taking into consideration; like are the T-Motors more responsive?
Although the T-motors might be a poor choice, I think they look cool and I think it flies really well.
Flywoo:
https://flywoo.net/collections/fpv-m...ight-fpv-motor
T-motor:
https://store.tmotor.com/goods.php?id=1121
Last edited by MiguelH; Sep 28, 2021 at 08:21 AM.
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Oct 07, 2021, 06:07 PM
Registered User
Quote:
Originally Posted by MiguelH
Hi

I've just build a Micro Apex. I wasn't sure if I wanted a 3" or 4" quad and with this frame I could decide along the way. I was a bit quick to decide on a 1404 3800kv size, because that seemed to be the most popular choice for 3.5" quads. I've been happy with the other T-motors that I've used, so I just bought the motors from T-motor without scanning the marked.
I've finished the build and are happy with it. I ended up with using 3.5" props with the 4" arms.
I get about 6mins of calm flying or 4mins of aggressive flying with 4s 520mAh. (239g AUW)

But then I stumbled on the Flywoo site and their 1404 3750kv motor.
When comparing the efficiency of the T-motor and the Flywoo at a thrust of about 270g with HQ3*3*3 props, the T-motor consumes 195W where the Flywoo only consumes 71W.
Based on this alone, the T-motor seems like a terrible choice.
Am I reading this the wrong way, are the Flywoo specs a big marketing lie or are they just simply more than twice as efficient!?
...or are there other aspects that I'm not taking into consideration; like are the T-Motors more responsive?
Although the T-motors might be a poor choice, I think they look cool and I think it flies really well.
Flywoo:
https://flywoo.net/collections/fpv-m...ight-fpv-motor
T-motor:
https://store.tmotor.com/goods.php?id=1121
Marketing lie? no. Prob just measure differently.
Like car hp at crank vs wheels.

6min on your 4S 520mah is very good.
If its the same Gaoneng HV I have.. its really more like 420mah. And unless you fly down below 3.7V.. you maybe use 350mah.

For my 4" with Xing 1404 3800KV or Xing2 3000KV, I can get up to 14min with Tattu real 750mah 4S. BUT.. quad is only 100g, 180g with battery.
Oct 07, 2021, 06:10 PM
Registered User
There are 100% genuine power and efficiency siff between same size and KV. Flywoo 1404 and Emax 1404 I have are less notchy and more efficient at very low power. But hover is like 18%, and cruise around 22%. So I really care more about 30-35% throttle efficiency.


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