Brother Hobby R3 2207 2550kv

Tested KV: 2540kv
Weight: 30.8g
Stator: 22mm x 7mm

Test Environment:

XRotor 40A ESC
Timing: Med-high
Dither: 7
PWM: Damped Light

Venom 60A Power Supply
2Farad Caps x2 in Series

Custom Datalogger

TI TivaC Launchpad
Allegro ACS758-200B
Voltage Divider
EagleTree eRPM Sensor
Custom Thrust Stand w/ HX711
4 ms logging rate

Atmospheric Data (Typical)

Barometric pressure: 29-30 in
Ambient Temperature: 70-74 deg F
Humidity: 50-60%
100% Thrust (g) Current (A) Voltage High RPM Pass Efficiency
Prop Tested: Max(g) Avg Max(g)* Max (A) Avg Max(A)* Avg Min(V)* Max(V) Max Min Avg Max* Watts G/W
HQ 5x4GF1317 1312 158.22 35.48 15.49 16.10 34149 32840 33209 550 2.4
Lumenier 5x4.51390 1372 150.10 38.89 15.45 16.11 32840 31512 31980 601 2.3
HQ v1s 5x4x31392 1379 151.11 36.42 15.50 16.12 34562 32467 32952 564 2.4
GemFan 5x4.5HBN1400 1392 166.70 38.12 15.46 16.12 33222 31746 32273 589 2.4
HQ v1s 5x4x4PC1445 1435 171.13 40.79 15.42 16.12 32967 30832 31335 629 2.3
HQ 5x4x3GF1460 1449 169.37 39.67 15.43 16.09 31982 30395 30802 612 2.4
HQ v1s 5x4.3x3PC1462 1456 170.63 40.33 15.43 16.09 31628 30287 30756 622 2.3
MyWing 5x4.5x31471 1458 161.37 43.54 15.38 16.12 31512 30075 30570 669 2.2
DAL Cyclone 5x4.5x31522 1501 155.17 43.91 15.36 16.12 31282 29970 30577 675 2.2
HQ v1s 5x4.8x31536 1530 154.41 45.37 15.32 16.10 30832 29455 29910 695 2.2
DAL 5x4.5x3HBN1552 1540 149.85 46.14 15.34 16.12 31282 29055 29754 708 2.2
Lumenier Buttercutter 5x5x31594 1571 160.87 47.13 15.30 16.11 30943 29055 29553 721 2.2
DAL Cyclone 5x4.6x31598 1571 144.78 48.45 15.27 16.10 29658 28476 29042 740 2.1
HQ 5x4x41609 1582 158.59 48.12 15.27 16.10 30287 28666 29254 735 2.2
75% Thrust (g) Amps Volts RPMs Watts G/W
HQ 5x4GF84818.9615.77270932992.8
Lumenier 5x4.591821.3315.75263493362.7
HQ v1s 5x4x391920.4815.78266223232.8
GemFan 5x4.5HBN92521.1615.76264413332.8
HQ 5x4x3GF96521.8115.72254073432.8
HQ v1s 5x4.3x3PC96722.4715.73253803532.7
HQ v1s 5x4x4PC97323.0315.73257983622.7
DAL Cyclone 5x4.5x3100224.4015.71254743832.6
MyWing 5x4.5x3102125.5215.69250664002.6
HQ v1s 5x4.8x3104625.6915.67250304022.6
DAL 5x4.5x3HBN104726.0315.68247144082.6
Lumenier Buttercutter 5x5x3106025.5615.68250394012.6
DAL Cyclone 5x4.6x3107426.8015.66245754202.6
HQ 5x4x4109327.2515.65242974262.6
50% Thrust (g) Amps Volts RPMs Watts G/W
HQ 5x4GF4428.7815.94195991403.2
HQ v1s 5x4x34889.3915.96193081503.3
Lumenier 5x4.54919.5815.94192321533.2
GemFan 5x4.5HBN4959.5815.95192841533.2
HQ v1s 5x4x4PC52510.3715.94188681653.2
HQ 5x4x3GF52610.1215.92186981613.3
HQ v1s 5x4.3x3PC52810.4415.92186851663.2
DAL Cyclone 5x4.5x353710.6515.94186751703.2
Lumenier Buttercutter 5x5x356310.8915.93185111743.2
DAL 5x4.5x3HBN56811.3815.93181811813.1
HQ v1s 5x4.8x357011.4215.91183201823.1
MyWing 5x4.5x357411.6715.92181651863.1
DAL Cyclone 5x4.6x357611.4915.91181161833.1
HQ 5x4x459812.0215.90179581913.1
25% Thrust (g) Amps Volts RPMs Watts G/W
HQ 5x4GF1503.2316.0411395522.9
HQ v1s 5x4x31633.3216.0611344533.0
Lumenier 5x4.51653.3716.0511328543.0
GemFan 5x4.5HBN1713.3916.0511312543.1
HQ v1s 5x4.3x3PC1783.5716.0311074573.1
HQ v1s 5x4x4PC1813.5816.0511165573.1
HQ 5x4x3GF1843.4916.0311032563.3
DAL Cyclone 5x4.5x31843.5916.0511158583.2
Lumenier Buttercutter 5x5x31893.6816.0411134593.2
DAL Cyclone 5x4.6x32003.8216.0311027613.3
HQ v1s 5x4.8x32003.8516.0311020623.2
DAL 5x4.5x3HBN2013.8216.0511012613.3
MyWing 5x4.5x32113.9916.0410881643.3
HQ 5x4x42224.0516.0210855653.4
IDLE Thrust (g) Amps Volts RPMs Watts G/W
HQ 5x4GF411.6716.066002271.5
HQ v1s 5x4x3411.6116.085983261.6
Lumenier 5x4.5421.6716.075970271.6
GemFan 5x4.5HBN461.7116.085976281.7
HQ v1s 5x4.3x3PC461.6216.075821261.7
HQ v1s 5x4x4PC471.7016.085924271.7
DAL Cyclone 5x4.5x3481.7016.085945271.8
Lumenier Buttercutter 5x5x3481.7716.075948281.7
HQ 5x4x3GF501.6616.055819271.9
HQ v1s 5x4.8x3521.7816.065864291.8
DAL 5x4.5x3HBN541.8016.085898291.9
DAL Cyclone 5x4.6x3541.7816.065878291.9
MyWing 5x4.5x3581.8016.085854292.0
HQ 5x4x4611.8816.055849302.0