Model Kits







Height: 3.1 inches
Length: 3.4 inches
Width: 2.9 inches
Weight: 3.1 oz
Gear Ratio: 28:1 to 42:1
Flapping: 35° with
  adjustable dihedral
Power: 100 watts

Play Video

This is the same modular gearbox that appears in the Crossbow RC ornithopter. You can purchase the gear unit separately to build your own RC bird.

The ornithopter gearbox is 3 inches tall, and it's suitable for ornithopters weighing about 1 pound (0.5kg) with a 4 to 6 foot wingspan. The gearbox is designed to fit in a hollow fuselage, which you can build easily using traditional balsa wood construction with a 1/8" plywood floor for mounting the gearbox. A fiberglass fuselage or single beam construction could also be used.

The carbon fiber studs on the gearbox have a 0.240 inch diameter that will fit some of the lightweight, hollow wing spars made for kites. You can also use kite fabric for the wing surface. The gearbox requires assembly.

The gearbox comes with a set of five pinion gears (16, 18, 20, 22, and 24 teeth) so you can select the best gear ratio for your particular application. This allows a range of gear ratios from 28:1 to 42:1. Use a smaller pinion gear for slower flapping larger wings. Use a large gear for small wings and more rapid flapping.

The RC ornithopter gearbox is designed to use a high-efficiency AXI Gold Line 2208 series brushless motor. Recommended motors are the AXI 2208/20 with two cells, or the AXI 2208/34 with three cells. These motors have the correct power output and mounting specifications for use with the ornithopter gearbox.

Building your own ornithopter is much easier with this ready made gearbox. Order one today and get started on your next awesome project!

Ornithopter Gearbox - $129.95
Gearbox with Motor - $179.95