Great Planes ElectriFly Gearbox S280 3.5:1 Ratio Std

Tower Stock# LXVY69  •  Manufacturer Stock# GPMG0204
Great Planes ElectriFly Gearbox S280 3.5:1 Ratio Std (large view)
Notes from our tech department:
This is a S280 Gearbox with 3.5:1 Gear Ratio and uses Standard Bushings.
For use with the Great Planes Park Flyers.


Designed for low noise and low maintenance, Park Flyer gearboxes used
with 280-sized motors get the maximum climbing power and flight
time from each mAh. A brass pinion gear is used for strength and
a nylon main gear for quiet, low friction operation.
Compatible with APC's light, durable Slo-Flyer Propellers
Economical bronze bushings for long-lasting sport use
Lightweight, fiber-reinforced, sealed gear case keeps out dust and
debris as well as resists damage.


One assembled S280 gearbox 3.5:1 ratio
One brass 13 tooth pinion gear
Three 2x6mm self-tapping gearbox mounting screws
One mini tube of Thread Locker to secure pinion to the motor shaft


Prop adapter 3mm shaft for APC propeller, use GPMQ4959.
Install pinion onto motor shaft, then into the gearbox
Assembly of unit onto the airplane


Overall Length: 37mm (1.5")(back of motor shroud to front of case)
Overall Height: 35.8mm (1.4")(motor shroud and gear case)
Motor Shroud Inner Diameter: 24mm (.9")
Gear Case Outer Diameter: 30.5mm (1.2")
Mounting Hole Flanges On-Center: 33.3mm (1.3")(three, evenly spaced)
Shaft Length: 7.3mm (.3")
Shaft Diameter: 3mm (.12")
Weight: 15 grams


For T-280 motor, use GPMG0300.
JXS 12/01/00

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