T-Motor F80–Should you go for it?

If you are looking for motors for your next race drone, you probably already heard about the F-Series motors by T-Motor. We have tested the F20, F40 and F60 already and thanks to T-Motor finally got our hands on the new F80 motors. We are going to make some thrust tests and compare the F80 to the F40 and F60, so you can find the best one for your race drone.

Details:

  • Dimension: Φ28.8×33.5mm
  • Stator Diameter: 23mm
  • Stator Length: 8mm
  • Magnet Poles: 14
  • KV: 1900 / 2200 / 2500kv
  • Weight: 41.9g

The F80 is a 2308 type motor and so the biggest and heaviest motor in the F-Series. The build quality is as always great and we haven´t experienced any issues with broken shafts etc. The wires are long enough for any 250mm race quad and T-Motor used 18AWG wires.

The design isn’t changed a lot compared to the F40II motor, but the F80 features arc magnets. The hollow steel shaft has a diameter of 5mm. Mounting holes pattern is M3 19x16mm.

Thrust tests

On all motor thrust tests we have used three different propeller types: KingKong 6×4, HQ5040 3-blade Skitzo and HQ5045 3-blade. For the 4S LiPo tests we used our best performing Aikon SEMF 30A ESC and for the 6S LiPo tests the new 6S version of the Aikon.


The 1900kv version of the F80 is great for a 6” prop. You will not only get the best thrust result (almost 1.4kg), but also the best efficiency – 2.85g/W. The motor is absolutely cool at the end of the test, so you should no worries of burning it.

The F80 got warm after the static thrust test with the KingKong 6×4 propeller, but it shouldn’t be a problem in flight. You may be concerned about you ESC and battery, because the current reached 42A. Using the 5” propeller it was around 32-35A, which is fine for every 30A rated ESC.

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The F80 2500kv (and the Aikon ESC) got very hot after the test! Because of the voltage drop on my battery (16.000mAh 4S), we couldn’t reach the 2kg thrust line. The current popped up to 58A. No battery at the moment can´t handle over 200A current on mini drone Smile


Now let examine the results with a 6S 1300mAh Nano-Tech battery. We have only used the popular Skitzo HQ5040 3-blade prop.

First of all do not wonder why the thrust on max throttle is lower than on 1900us: battery voltage drop. During the test with the 2500kv version, the current reached 55A and voltage dropped to 18V, which almost killed my 6S battery.

Should you get the F80 or better stay with F40 and F60?

We compared the results from the F60 and F80 2200kv version and also deducted the difference in the weight of both motors, so the data is more accurate. Here is the result:

If you are going to use a 6” propeller, there is really a difference in the thrust ratio. However on a 3-blade 5” prop there is almost any. If you are interested in more F60 thrust results check here.

Below you can also find a comparison between the “old” F40 2500kv and F80 2500kv with a standard HQ5045 propeller. The difference in the motors weight was already deducted from the thrust results of the F80.

As you can see there is about 200g more thrust with the F80 motor, which will give you a lot more speed. However the additional weight of 55g (for 4 motors) will decrease the flight time of your drone.

Update: Below you can find the complete exported thrust data from the RCbenchmark Tool.

Summary

The F80 motors as well as all F-Series motors have a great build quality. It is up to you, using the provided test results, to find out which kV-version is the best for your drone. All T-Motors are available at Banggood and are genuine.

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16 Comments

  1. Usama

    Hi,
    Thanks for a very informative review and post. I was wondering, according to the specs on T-motor website, the kv1900 seems to actually be of higher power rating. Also the current rating on all of them are way below 55A. From their specs, it seems that the 1900KV can go near 2000g but not the 2200kv and 2500kv ones. What do you think?

    • Sergey

      Hi, all of the motors can go near the 2kg. It just depends on the propeller and battery type you are going to use. The 2500kv version can easily reach the 2kg with a HQ 5″ 3-blade prop on 6S, if the battery is a healthy one. On what configuration you are planing to use these F80?

  2. Fred

    Hi,
    Any idea on how many amps reached during the thrust test of the F80 1900kv on 4S with KingKong 6×4 props?
    Many thanks!

    • Sergey

      Hi Fred, it reached about 30A with the KingKong 6×4 on 4S. If you need the complete excel sheet data I can upload it here. Best, Sergey

      • Christian

        Would appreciate it a lot if you can upload your Excel sheet for the F80 1900kv and 2200kV Version 🙂
        Thanks in advance!
        Christian

        • Sergey

          Hello Christian, added the data for all three F80 motors: 1900kv, 2200kv and 2500kv. Grüße, Sergey 😉

  3. Sergey

    Whether the F80 was tested on 7 inch 3 blade propellers?

    • Sergey

      Hello Sergey, no I haven´t. I do not have any 7″ propeller. Which one do you want to see? Best wishes, Sergey

  4. Jake Rupprecht

    Hi I was wondering the thrust and amp draw of the 2500kv version on 6s with a 6″ prop. This is what I plan to run but am not sure if an esc could take it

    • Sergey

      Hi Jake, I would not recommend using the 2500kv on 6S LiPo and 6″ prop. The amp draw on 4S was almost 60A! Of course this is a static thrust test and in the air it will be less, but as said this was with 4S battery. You are going to burn your ESCs and moreover damage any battery, as the total current will be over 200A. You will be more than satisfied with a setup on 4S LiPo! Best, Sergey

  5. Vince

    Hi,
    I’d like to put a F80 2500kv on a flying wing with 4s lipo 75C, do you think I can use a 7 inch prop or something will go wrong ? What do you think ?

    • Sergey

      Hello Vince, I am also going to put one of my F80 2500kv on a flying wing, but with 6″ prop. 7″ on 4S will give you a lot of thrust, but there is a chance if you push it to the limit to damage the ESC or motor. Why do you need 7″ prop? Do you have 6″ props, which you can use? Best wishes, Sergey

  6. Adeva

    Hello Sergey,
    If you used a 4S battery as you said, then why in the excel sheets the voltage is greater than 14.8V?

    • Sergey

      Hello Adeva, a cell charged at maximum has voltage of 4.2V. A 4S LiPo battery has max voltage 4 x 4.2 = 16.8V. Best wishes, Sergey

  7. Justyn Markland

    Thanks for doing these test. I would like to see the f80 1900kv on a 7″ prop with 4s lipo. I think it may be a really good setup.

    • Sergey

      Thank you, Justyn! Yeah, should be fine, but watch out not to burn it 😉 Cheers, Sergey