AC 25/35-20 with gearbox - MPJ 20103
Stopped Production


TECHNICAL SPECIFICATION
  • three-phase AC synchro motor
  • dual ball bearing with long life grease
  • high speed ball bearing
  • segment type, two pole rotor
  • kevlar wrapped rotor
  • FeNdB magnets
  • toroidal windings
  • windings directly under body for better cooling
  • one part body turned from bar stock on CNC machine
  • black anodized surface
  • heat treated shaft
  • high quality MP JET gold 2,5 mm connectors
  • version with cables, connectors and gearbox

The packet of electromotor contains: 3 pcs of connectors (type F), 3 pcs shrinking isolations, 3 pcs of screws Pan Head 2.2x13
Recommend ESC: three-phase, sensorless (with EMF detection version), suitable version 30 Amps, 18 Amps partially.

Number of cells
6-9
RPM per Volt
3850
Maximum recommend speed (min-1)
40000
Maximum speed (min-1)
45000
Maximum efficiency (%)
approx. 82
Current of maximum efficiency (A)
7-15
Short time current (A)
25
Internal resistance Ri ; (mW - miliohm)
100
Dimensions - diameter/length (mm)
25/35
Shaft diameter (mm)
3
Number of turns
20
Weight of drive unit (g)
94
Recommend gearbox
MPJ 8200
Gearbox ratio
4,1:1
Recommend propeller range with gearbox 4,1:1
APC 8/4 - 10/8
Maximum weight of glider (g)
1000
Maximum weight of acrobatic model (g)
750

Instruction manual
Information about RPM, current and voltage for each type of propellers.

  • ESC MGM40 Amps, version with integrated RPM measuring
  • current measured through shunt 1 mW (miliohm)
  • length of cables is 60cm, 2,5mm2 cross section
  • laboratory supply 20 Amps, filtered 470 000 mF (mikrofarad)
  • Voltage measuring directly on input ESC condenzator
  • without correction for temperature of winding, without correction for magnets temperature
    Only for information.
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