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Here is a 2″ and 2.5″ propeller shoot-out for cinewhoops and micro FPV drones. These are common propeller sizes for 1103, 1105, 1106, 1204 motor sizes. Bookmark this page so you don’t miss out on any updates :)

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Summary of Results

Not to waste your time, let me tell you right now what the best props are from my testing. My conclusion is based on my own analysis of the data. I have shared the data at the end of the article so feel free to study it and decide for yourself.

Since I am using these props on cinewhoops for smooth cinematic flying (very little acro), my main focus would be on efficiency, followed by power and finally responsiveness.

Apart from thrust, efficiency and response, I also measured noise level (in dB) of each props at 50% and 100% throttle. I think this would be useful information for selecting props because we all want our whoops to be less annoying when flying indoor :)

The Best 2-inch Props for Whoops

My favourite is the Emax Avan 3-blade, which seems to be the best balance between power and efficiency. You should get exceptional flight time with these given the outstanding efficiency advantage for the 50% and 75% throttle range (cruising speed).

For raw power, Gemfan 2035×4 and Gemfan 2036×4 are both great options, with the 2035 being a tiny bit more efficient at the cost of a few grams of thrust, this makes sense because of the lower pitch. However you might want to use bigger motors than 1105 for these. They are heavy props and require more torque to spin effectively, therefore more suited for heavier builds.

My main 2″ rig is the Beta85X (Umm85), which comes with the Emax Avan 4-blade. Surprisingly these props didn’t perform well at all, efficiency is one of the lowest especially at mid throttle. If you change them out for the 3-blade version, you should immediately see improvement in flight time and slight increase in power :)

The Azure 2035×3 is an interesting prop, I didn’t expect it to have such low thrust which is way below average, I had to run the test twice to verify (same result). There is no power at the top end and efficiency isn’t particularly great at mid throttle either. However due to the ultra high RPM, it’s one of the most responsive props in the list, which suggests it might do well on ultra-light builds.

The props with the lowest noise level are the KingKong 1935×5, with only 88.5dB at 100% throttle. But these are very poor performer in my thrust testing, so I do not recommend them. The next options are the Gemfan 2035×4 at 95.5dB, and Avan 4-blade at 97.1dB. The rest are all over 100dB.

The Best 2.5-inch Props for Whoops

I think the best 2.5″ prop has to be the Azure 2540×3. It’s one of the most efficient props across the whole throttle range offering ultra long flight time, and still producing very respectable power (thrust).

My second favourite would be the Emax Avan 2.5″, this is the absolute powerhouse, delivering the most thrust at full throttle, and yet offers decent efficiency.

I recently built the Umma95 which was modified from the Beta95X. It comes with Gemfan 2540×3, and they are actually excellent props as well. Great balance between power and efficiency. If you are already using these I don’t think you have to switch :)

The HQ T65x3 is in a similar position as the Azure 2035×3 we mentioned earlier It’s a very light prop that doesn’t make much thrust, but it can run at very high RPM and it’s designed to be responsive. It would be great for ultra-light builds like a toothpick, but I wouldn’t use them on a whoop.

The most silent props are the Racerstar 2435×4 with a noise level of 97.9dB at 100% throttle, and Gemfan 2535×4 is pretty quiet too at 97.7dB. The rest are almost all over 100dB.

2“ Whoop Props Overview

Azure 2035X3

• Product Page
  • Amazon: https://amzn.to/2VRZuYI
  • GetFPV:  https://bit.ly/2O2RDDn
  • RDQ: https://bit.ly/2NXAx9Z
• Max Thurst / Current: 115.76g / 4.20A
• Noise Level (Throttle): 100dB (100%)

Go back to “Summary of Results”.

Go check out the test data.

Emax Avan 2inch 3-blade

• Product Page
  • Banggood: https://bit.ly/2O33MYO
  • GetFPV: https://bit.ly/3f0eXNT
  • RDQ: https://bit.ly/2NWDPdA
• Max Thurst / Current: 154.43g / 6.40A
• Noise Level: 75dB (50%), 100.5dB (100%)

Go back to “Summary of Results”.

Go check out the test data.

Emax Avan 2inch 4-blade

• Product Page
  • RDQ: https://bit.ly/3cxd7lD
  • Banggood: http://bit.ly/31V6l4e
  • Amazon: https://amzn.to/3gBF3ab
  • GetFPV: https://bit.ly/2Y4OMyc
• Max Thurst / Current: 151.56g / 6.88A
• Noise Level: 77.7dB (50%), 97.1dB (100%)

Go back to “Summary of Results”.

Go check out the test data.

Gemfan 2023X3

• Product Page
  • Banggood: https://bit.ly/2W8wdt5
  • Amazon: https://amzn.to/2VVq830
  • RDQ: https://bit.ly/2ZOUCVA
• Max Thurst / Current: 149.22g / 5.90A
• Noise Level: 75.5dB (50%), 100.8dB (100%)

Go back to “Summary of Results”.

Go check out the test data.

Gemfan 2035X4 RotorX

• Product Page
  • GetFPV: https://bit.ly/2ZIlypN
  • Banggood: https://bit.ly/2BA8Ql5
  • Amazon: https://amzn.to/2NWO4P4
  • RDQ: https://bit.ly/3fh6Dt2
• Max Thurst / Current: 162.19g / 7.06A
• Noise Level: 74.6dB (50%), 95.5dB (100%)

Go back to “Summary of Results”.

Go check out the test data.

Gemfan 2036X4 Hulkie

• Product Page
  • Amazon: https://amzn.to/2D9YWqw
  • Banggood: https://bit.ly/2ZLsOB5
• Max Thurst / Current: 163.71g / 7.30A
• Noise Level: 74.6dB (50%), 101.8dB (100%)

Go back to “Summary of Results”.

Go check out the test data.

HQ T2X2.5X3

• Product Page
  • GetFPV: https://bit.ly/2DhkrG3
  • Banggood: https://bit.ly/3f6Pvq7
  • Amazon: https://amzn.to/3f8KRrI
• Max Thurst / Current: 153.26g / 6.96A
• Noise Level: 80.4dB (50%), 102.7dB (100%)

Go back to “Summary of Results”.

Go check out the test data.

HQ T2X2X4

• Product Page
  • RDQ: https://bit.ly/2DaVBrb
  • Banggood: https://bit.ly/2DgPCkQ
• Max Thurst / Current: 150.93g / 6.77A
• Noise Level: 78dB (50%), 104.6dB (100%)

Go back to “Summary of Results”.

Go check out the test data.

KingKong 1935X5

• Product Page: https://bit.ly/2C6d2J3
• Max Thurst / Current: 132.57g / 6.05A
• Noise Level: 74.5dB (50%), 88.5dB (100%)

Go back to “Summary of Results”.

Go check out the test data.

Racerstar 2035X5

• Product Page: https://bit.ly/2Z2LRI4
• Max Thurst / Current: 156.84g / 7.13A
• Noise Level: 77.8dB (50%), 99.5dB (100%)

Go back to “Summary of Results”.

Go check out the test data.

---

2.5″ Whoop Props Overview

Azure 2540X3

• Product Page
  • RDQ: https://bit.ly/3e5qhqK
  • Amazon: https://amzn.to/38v1Jq3
  • GetFPV: https://bit.ly/3f7nVJ5
• Max Thurst / Current: 211.21g / 7.78A
• Noise Level: 82.5dB (50%), 104.4dB (100%)

Go back to “Summary of Results”.

Go check out the test data.

Emax Avan 2.5inch

• Product Page
  • GetFPV: https://bit.ly/2Dd4lx3
  • Amazon: https://amzn.to/3f6fZbc
  • Banggood: http://bit.ly/2LO4CbL
  • RDQ: https://bit.ly/3f0fnUt
• Max Thurst / Current: 220.92g / 8.87A
• Noise Level: 81.2dB (50%), 100.2dB (100%)

Go back to “Summary of Results”.

Go check out the test data.

Gemfan 2535X4 RotorX

• Product Page: https://bit.ly/2XQdB2g
• Max Thurst / Current: 214.00g / 9.56A
• Noise Level: 77dB (50%), 97.7dB (100%)

Go back to “Summary of Results”.

Go check out the test data.

Gemfan 2540X3

• Product Page
  • RDQ: https://bit.ly/31PN7QF
  • Banggood: http://bit.ly/2HIqcxJ
  • Amazon: https://amzn.to/2O0cIhF
  • GetFPV: https://bit.ly/2VUHBsl
• Max Thurst / Current: 214.34g / 8.77A
• Noise Level: 82.8dB (50%), 101.9dB (100%)

Go back to “Summary of Results”.

Go check out the test data.

HQ T2.5X2.5X3

• Product Page
  • GetFPV: https://bit.ly/2O2ZKQq
  • Banggood: https://bit.ly/2AxWtVU
  • Amazon: https://amzn.to/2Z8RODD
• Max Thurst / Current: 212.67g / 9.38A
• Noise Level: 82.5dB (50%), 102.1dB (100%)

Go back to “Summary of Results”.

Go check out the test data.

HQ T65X3

• Product Page
  • RDQ: https://bit.ly/2DgZYBf
  • Banggood: https://bit.ly/2AEgSZE
  • Amazon: https://amzn.to/3e6W8aD
  • GetFPV: https://bit.ly/322VkRR
• Max Thurst / Current: 164.18g / 5.47A
• Noise Level: 77.4dB (50%), 103.2dB (100%)

Go back to “Summary of Results”.

Go check out the test data.

Racerstar 2435X4

• Product Page: https://bit.ly/3e1sJyB
• Max Thurst / Current: 189.35g / 9.55A
• Noise Level: 75.1dB (50%), 97.9dB (100%)

Go back to “Summary of Results”.

Go check out the test data.

Racerstar 2540X3

• Product Page: https://bit.ly/2VP5eSP
• Max Thurst / Current: 199.11g / 7.65A
• Noise Level: 103.6dB (100%)

Go back to “Summary of Results”.

Go check out the test data.

2inch Thrust Data

I tested all these propellers on BetaFPV 1105 5000KV Motor and 3S (12.4V – 12.5V). All tests are done on BetaFPV 1105 5000KV motors on 3S (12.4V – 12.5V). I tried 4S but the motors was burning hot after running full throttle for more than 20 seconds, and I don’t want to annoy my neighbour so I went with 3S in this testing.

If you prefer to hear motor spinning, here is a video :)

Thrust vs Current vs Efficiency

50% Throttle

75% Throttle

100% Throttle

Response (Acceleration and Deceleration)

Steeper = Faster Response

2.5inch Thrust Data

I tested all these propellers on BetaFPV 1105 5000KV Motor and 3S (12.4V – 12.5V). If you prefer to hear motor spinning, here is a video :)

Thrust vs Current vs Efficiency

50% Throttle

75% Throttle

100% Throttle

Response (Acceleration and Deceleration)

Steeper curve = Faster Response