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Great Planes - GPMG0225   735557302252 0735557302252
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Great Planes ElectriFly Gearbox T400 3:1 Ratio BB
Great Planes ElectriFly Gearbox T400 3:1 Ratio BB
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Great Planes ElectriFly Gearbox T400 3:1 Ratio BB Add to Wish List
34.36  Add To Cart 1.62  
Great Planes ElectriFly Gearbox T400 3:1 Ratio BB Add to Wish List
51.27  Add To Cart 2.70  
Great Planes ElectriFly Gearbox T400 3:1 Ratio BB Add to Wish List
102.00  Add To Cart 5.94  

Regularly Purchased Together
— Customers who purchased the above product also bought the following —
Although customers also purchased these, compatibility is not guaranteed. Click an item for product details.
1.  LXWK45 Great Planes ElectriFly T-400 7.2-8.4V Ferrite Motor 8.99  Add To Cart
2.  LXLXV1 Great Planes Spinner Lancair EP 2.85  Add To Cart
3.  LXKBF4 Great Planes ElectriFly C-25 Mini Brushed ESC w/BEC 34.99  Add To Cart
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Tech Notes
This is a T400 Gearbox with 3:1 Gear Ratio and uses Ball Bearings.
For use with the Great Planes Park Flyers.


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.
Compatible with APC's light, durable Slo-Flyer Propellers
Utilizes smooth-running, long-lasting ball bearings
Lightweight, aluminum, open gear case resists damage
Aluminum propeller adapter and washer
One year warranty


One assembled T400 gearbox 3:1 ratio (includes 34 tooth nylon gear)
One brass 11 tooth pinion gear (not carried separately)
One 3 x 3mm pinion set screw
Two 2.4 x 5mm phillips head mounting screws


Attaching the gearbox to the motor with a small phillips head
Install pinion onto motor shaft with a 1.5mm hex head wrench
Installing propeller onto shaft with a medium sized phillips head
screwdriver. (Use threadlocking compound to hold screw tight.)
Assembly of gearbox/motor unit onto an aircraft


Overall Length: 35mm (1.4")(back of gearbox to front of adapter)
Overall Height: 37mm (1.5")
Overall Width: 32mm (1.2")
Mounting Holes On-Center: 16mm (.67")
Propeller Adapter Shaft Diameter: 6mm (.24")
Propeller Adapter Shaft Length: 9mm (.35")
Main Shaft Diameter: 4mm (.16")(the adapter mounts onto this one)


For T-400 motor, use GPMG0325.
There was some question whether this is really a 3:1 ratio.
Not to worry. That is because 34 teeth to 11 teeth equates to
3.09090909 to 1 thus rounded to 3:1
JAL 6/1/01
up tjt 6/29/01

– If you need more information, use these Great Planes resources –
Click Here: Manufacturer's Product Web Page
Email: airsupport@greatplanes.com
Web Site: http://www.greatplanes.com/
Phone: 217-398-8970
  Postal Address:
Great Planes

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Parts Compatibility
Parts Compatibility for Great Planes ElectriFly Gearbox T400 3:1 Ratio BB
This item is a replacement part for the following:
 LXLCP1 Great Planes ElectriFly Lancair ES EP ARF 43"  (Parts List)

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