Gearboxes allow you to convert a motor's speed(RPMs) and force to a usable speed or force. By using an existing kit, you can get a project started without having to go through the trouble of finding gears, mating, and building the case. Some of the kits come with a motor as part of it so to even simplify the project, but still learn about gearing.

[EG004]
plastic gear box
$4.99
In Stock

MFG: -
Type:

[HU099]
Tamiya Twin Motor Gearbox 70097
$17.50
Out of

MFG: Tamiya - 70097
Type: Twin-motor Gearbox
Ratios: 28:1 203:1
Shaft/Attach: Hex
Motor: Two FA-130 8300RPM 110ma 22g-cm
Power: 3-4.5vdc

[HU097]
4 Speed Crank Axle Gearbox 70110
$12.99
Out of

MFG: Tamiya - 70110
Type: 4-Speed crank axle
Ratios: 126:1 441:1 1543:1 5402:1
Shaft/Attach: Multiple
Motor: FA-130 included
Power: 3-4.5vdc
RPMs: 105 30 8.5 2.5
g-cm: 585 1483 499 2020

[HU054]
Tamiya Planitary Gearbox Set 72001
$19.50
In Stock

MFG: Tamiya - 72001
Type: Planetary Gear box
Ratios: 4:1 5:1 16:1 20:1 25:1 80:1 100:1 400:1
Shaft/Attach: Crossed horn and Single horn
Motor: RC-260 Included
Power: 3-4.5vdc upto 1amp
RPMs: 2625 2100 656 525 420 131 105 26
g-cm: 15g-cm @ motor