The KMS Quantum 2826/05 O/R Brushless Motor can be used to convert .40-.50-size glow planes, and will also handle a 4 lb 3D plane and up to a 6-7 lb sport plane.

Specs:

Nearest AXI Equivalent: 2826/10
Diameter: 35 mm
Length: 54 mm
Stator Size: 28 x 26 mm
NiCd/NiMH cells: 10-16
LiPo Cells: 3-5
IO Amps: 2.1 (10v)
Turns: 5
KV/RPM: 900
Max Cont Current: 29a
Max Current: 45a/60s
Max Efficiency: >86%
Resistance: 43 mohm
Shaft Dia: 5 mm
Weight: 170 g
Bearings: 3
Poles: 14
ESC Timing Degrees: 20-30 (High)