BP Hobbies - 2217-9

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Specifications

  • Type: Outrunner
  • Weight: 74.00g (2.61oz)
  • Diameter: 28.00mm (1.10in)
  • Length: 34.00mm (1.34in)
  • Shaft Diameter: 4.00mm (0.16in)
  • Maximum Amps: 18
  • Maximum RPM: 25000

Constants

  • kV: 950
  • Rm: 0.085
  • Io: 0.9



Io Test Data

mark_q test results
Volts Amps RPM
12.28 1.06 12450

Test Data

mark_q test results
Propeller Gear Ratio Volts Amps Watts RPM Speed (mph) Thrust (g) Thrust (oz) RPM as % of Kv*V
APC SF 9x4.7 1 11.7 13.5 157 9300 41.0 879 31.01 84%
APC SF 9x6 1 11.42 21.7 247 7650 43.0 936 33.02 71%
APC SF 10x4.7 1 11.36 20.48 232 7750 34.0 1162 40.99 72%
APC SF 11x4.7 1 11.09 24.03 266 6950 30.0 1304 46.00 66%

Comments

mark_q on 2009-09-03 17:57:14
Please excuse the confusion as the values for thrust are not correct. The original values were in oz but were put in the "Thrust (g)" column. It should read:

APC SF 9x4.7 879g/31oz
APC SF 9x6 936g/33oz
APC SF 10x4.7 1162g/41oz
APC SF 11x4.7 1304g/46oz

-Mark
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