HXT - 25D-28

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HXT - 25D-28

Specifications

  • Type: Outrunner
  • Weight: 58.00g (2.05oz)
  • Maximum Amps: 19

Constants

  • kV: 1117
  • Rm: 0.251
  • Io: 0.98

HXT - 25D-28 Efficiency Graph

Io Test Data

Dr Kiwi test results
Volts Amps RPM
10.01 0.98 10710
Bruce Abbot test results
Volts Amps RPM
7 0.6 7330
10 0.7 10450

Test Data

Dr Kiwi test results
Propeller Gear Ratio Volts Amps Watts RPM Speed (mph) Thrust (g) Thrust (oz) RPM as % of Kv*V
GWS HD 7x3.5 1 6.9 2.25 15 7200 23.9 117 4.13 93%
GWS HD 7x3.5 1 7.9 2.7 21 8100 26.9 152 5.36 92%
GWS HD 7x3.5 1 8.9 3.15 28 9060 30.0 194 6.84 91%
GWS HD 7x3.5 1 9.9 3.7 36 9990 33.1 242 8.54 90%
GWS HD 7x3.5 1 10.9 4.3 46 10950 36.3 297 10.48 90%
APC WSF 7x3.8 1 7 4.05 28 6780 24.4 228 8.04 87%
APC WSF 7x3.8 1 7.9 5 39 7560 27.2 288 10.16 86%
APC WSF 7x3.8 1 8.9 6.1 54 8310 29.9 356 12.56 84%
APC WSF 7x3.8 1 9.9 7.3 72 9030 32.5 437 15.41 82%
APC WSF 7x3.8 1 10.9 8.6 93 9690 34.9 508 17.92 80%
APC SF 7x4 1 7 3.25 22 6990 26.5 181 6.38 89%
APC SF 7x4 1 7.9 4 31 7800 29.6 232 8.18 88%
APC SF 7x4 1 8.9 4.8 42 8640 32.7 287 10.12 87%
APC SF 7x4 1 9.9 5.85 57 9450 35.8 359 12.66 85%
APC SF 7x4 1 10.9 6.8 74 10230 38.8 423 14.92 84%
APC E 7x5 1 7 4 28 6750 32.0 196 6.91 86%
APC E 7x5 1 7.9 4.9 38 7560 35.8 250 8.82 86%
APC E 7x5 1 8.9 5.9 52 8400 39.8 312 11.01 84%
APC E 7x5 1 9.9 6.9 68 9180 43.5 380 13.40 83%
APC E 7x5 1 10.9 7.95 86 9900 46.9 446 15.73 81%
APC SF 7x6 1 6.9 4.8 33 6570 37.3 210 7.41 85%
APC SF 7x6 1 7.9 5.9 46 7290 41.4 260 9.17 83%
APC SF 7x6 1 8.9 7.15 63 8010 45.5 316 11.15 81%
APC SF 7x6 1 9.9 8.55 84 8700 49.4 378 13.33 79%
APC SF 7x6 1 10.9 9.85 107 9360 53.2 437 15.41 77%
APC Sport 7x7 1 6.9 4.4 30 6630 44.0 186 6.56 86%
APC Sport 7x7 1 7.9 5.3 41 7440 49.3 239 8.43 84%
APC Sport 7x7 1 8.9 6.4 56 8280 54.9 295 10.41 83%
APC Sport 7x7 1 9.9 7.45 73 9030 59.9 357 12.59 82%
Propeller Gear Ratio Volts Amps Watts RPM Speed (mph) Thrust (g) Thrust (oz) RPM as % of Kv*V
APC Sport 7x7 1 10.9 8.6 93 9780 64.8 417 14.71 80%
APC Sport 7x7 1 14 12.3 172 11220 74.4 607 21.41 72%
APC Sport 7x7 1 14.6 13.2 192 12150 80.5 652 23.00 75%
GWS HD 8x4 1 7 3.95 27 6810 25.8 246 8.68 87%
GWS HD 8x4 1 7.9 4.75 37 7620 28.9 306 10.79 86%
GWS HD 8x4 1 8.9 5.7 50 8430 31.9 377 13.30 85%
GWS HD 8x4 1 9.9 6.7 66 9180 34.8 457 16.12 83%
GWS HD 8x4 1 10.9 7.8 85 9960 37.7 538 18.98 82%
GWS HD 8x6 1 6.9 6 41 6240 35.5 281 9.91 81%
GWS HD 8x6 1 7.9 7.3 57 6900 39.2 347 12.24 78%
GWS HD 8x6 1 8.9 8.8 78 7620 43.3 418 14.74 77%
GWS HD 8x6 1 9.9 10.85 107 8190 46.5 492 17.35 74%
GWS HD 8x6 1 10.9 11.85 129 8790 49.9 567 20.00 72%
APC E 8x8 1 6.9 8.4 57 5640 42.7 268 9.45 73%
APC E 8x8 1 7.9 10.1 79 6210 47.0 330 11.64 70%
APC E 8x8 1 8.9 11.65 103 6720 50.9 388 13.69 68%
APC E 8x8 1 9.9 13.4 132 7200 54.5 448 15.80 65%
APC E 8x8 1 10.9 15.2 165 7590 57.5 508 17.92 62%
APC E 9x4.5 1 6.9 6.15 42 6240 26.6 364 12.84 81%
APC E 9x4.5 1 7.9 7.6 60 6900 29.4 458 16.16 78%
APC E 9x4.5 1 8.9 9 80 7530 32.1 550 19.40 76%
APC E 9x4.5 1 9.9 10.55 104 8160 34.8 652 23.00 74%
APC E 9x4.5 1 10.9 12.05 131 8700 37.1 746 26.31 71%
APC SF 9x4.7 1 6.9 6.85 47 6090 27.1 388 13.69 79%
APC SF 9x4.7 1 7.9 8.25 65 6750 30.0 473 16.68 76%
APC SF 9x4.7 1 8.9 9.7 86 7350 32.7 567 20.00 74%
APC SF 9x4.7 1 9.9 11.2 110 7980 35.5 670 23.63 72%
APC SF 9x4.7 1 10.8 12.7 137 8490 37.8 766 27.02 70%
GWS HD 9x5 1 6.9 6.4 44 6150 29.1 375 13.23 80%
GWS HD 9x5 1 7.9 7.7 60 6810 32.2 463 16.33 77%
Propeller Gear Ratio Volts Amps Watts RPM Speed (mph) Thrust (g) Thrust (oz) RPM as % of Kv*V
GWS HD 9x5 1 8.9 9.2 81 7440 35.2 560 19.75 75%
GWS HD 9x5 1 9.9 10.8 106 8040 38.1 663 23.39 73%
APC E 10x5 1 6.9 8.2 56 5760 27.3 446 15.73 75%
APC E 10x5 1 7.9 9.8 77 6300 29.8 548 19.33 71%
APC E 10x5 1 8.9 11.7 104 6840 32.4 652 23.00 69%
APC E 10x5 1 9.8 13.4 131 7290 34.5 748 26.38 67%
APC E 10x5 1 10.8 15.1 163 7680 36.4 840 29.63 64%
GWS HD 10x6 1 6.9 8.3 57 5670 32.2 450 15.87 74%
GWS HD 10x6 1 7.9 10 79 6240 35.5 545 19.22 71%
GWS HD 10x6 1 8.9 11.7 104 6750 38.4 649 22.89 68%
GWS HD 10x6 1 9.9 13.55 134 7260 41.2 740 26.10 66%
GWS HD 10x6 1 10.9 15.3 166 7620 43.3 835 29.45 63%
Bruce Abbot test results
Propeller Gear Ratio Volts Amps Watts RPM Speed (mph) Thrust (g) Thrust (oz) RPM as % of Kv*V
APC SF 7x4 1 7 3 21 6765 25.6 0 0.00 87%
APC SF 7x4 1 10 5.4 54 9263 35.1 0 0.00 83%
APC E 7x5 1 10 6.2 62 9065 42.9 0 0.00 81%
GWS EP 8x4 1 7 3.5 24 6652 25.2 0 0.00 85%
GWS EP 8x4 1 10 6.1 61 9093 34.4 0 0.00 81%
GWS HD 8x6 1 7 5.4 37 6215 35.3 0 0.00 79%
GWS HD 8x6 1 10 9.5 95 8278 47.0 0 0.00 74%
APC E 8x6 1 10 10.4 104 8034 45.6 0 0.00 72%
APC E 9x4.5 1 10 10.5 105 8020 34.2 0 0.00 72%
GWS EP 9x5 1 7 5.9 41 6103 28.9 0 0.00 78%
GWS EP 9x5 1 10 10 100 8154 38.6 0 0.00 73%
GWS HD 9x7.5 1 7 9 63 5392 38.3 0 0.00 69%
GWS HD 9x7.5 1 10 14.6 146 6923 49.2 0 0.00 62%
APC SF 10x4.7 1 7 9.4 65 5291 23.6 0 0.00 68%
GWS EP 10x6 1 7 8 56 5630 32.0 0 0.00 72%
GWS EP 10x6 1 10 13.1 131 7285 41.4 0 0.00 65%
APC E 10x7 1 7 9.8 68 5194 34.4 0 0.00 66%
GWS HD 10x8 1 7 11.4 79 4879 37.0 0 0.00 62%
GWS EP 11x7 1 7 10.7 74 5008 33.2 0 0.00 64%

Comments

by Bruce Abbot on Jan 14, 2009 @ 02:53 AM Report
An unusual feature of this motor is the bell, which is made of aluminium only. There is no iron ring to complete the magnetic path. Despite this, it still manages to achieve good power output and better efficiency than some other outrunners of similar size and cost. Apparently, back-iron is not required when the magnets are curved and have 100% coverage.
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