Great Planes ElectriFly Gearbox T400 3:1 Ratio BB GPMG0225
This is a T400 Gearbox with 3:1 Gear Ratio and uses Ball Bearings.
For use with the Great Planes Park Flyers.
Features
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Great Planes ElectriFly Gearbox T400 3:1 Ratio BB GPMG0225
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Designed for low noise and low
maintenance, Park Flyer gearboxes used with 400-sized motors get the maximum
climbing power and flight time from each mAh. A bronze pinion gear is used
for strength and a nylon main gear for quiet, low friction operation.
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Compatible with APC's light,
durable Slo-Flyer Propellers
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Utilizes smooth-running,
long-lasting ball bearings
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Lightweight, aluminum, open
gear case resists damage
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Aluminum propeller adapter and
washer
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One year warranty
Specifications
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Overall Length: 35mm
(1.4")(back of gearbox to front of adapter)
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Overall Height: 37mm (1.5")
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Overall Width: 32mm (1.2")
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Mounting Holes On-Center: 16mm
(.67")
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Propeller Adapter Shaft
Diameter: 6mm (.24")
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Propeller Adapter Shaft
Length: 9mm (.35")
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Main Shaft Diameter: 4mm
(.16")(the adapter mounts onto this one)
Contents
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One assembled T400 gearbox 3:1
ratio (includes 34 tooth nylon gear)
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One brass 11 tooth pinion gear
(not carried separately)
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One 3 x 3mm pinion set screw
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Two 2.4 x 5mm phillips head
mounting screws
Requirements
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Attaching the gearbox to the
motor with a small phillips head screwdriver.
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Install pinion onto motor
shaft with a 1.5mm hex head wrench
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Installing propeller onto
shaft with a medium sized phillips head screwdriver. (Use threadlocking
compound to hold screw tight.)
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Assembly of gearbox/motor unit
onto an aircraft
Comments
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For T-400 motor, use GPMG0325.
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There was some question
whether this is really a 3:1 ratio.
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Not to worry. That is because
34 teeth to 11 teeth equates to 3.09090909 to 1 thus rounded to 3:1
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