Use these gear box kits to build your own robots. It includes DC motors, hardware and gears, and tire. MIT Handyboard system can be used to drive them. The gear boxes and wheels are made in Japan . Assembly instruction included. You can use two gear box and mount the wheels to build a basic Mobile Robot platform.
GEAR-70097 -- Twin Motor Gearbox Kit -- US$15.95
 
Two DC motors & gears in a compact unit. Provides full fwd-rev-left-right action! Build with 1 of two different ratios: fast 58:1 or strong 203:1. Size: 75 x 50 x 23 mm . Shafts: 3 mm hex, 105 mm long. Add your own wheel, hubs or tracks. Assembly instructions included. Use with any combination of construction and robotics projects in this page and our mechanical parts . It comes with two DC motor.
GEAR-72001 -- Planetary Gear Box Kit -- US$27.85
 
Assemble it for one of eight ratios: 4, 5, 16, 20, 25, 80, 100, or 400 to 1. Our most versatile gear box covering the broadest range. 35 mm wide, up to 80 mm long. Assembly instructions included.Use with any combination of construction and robotics projects in this page and our mechanical parts . It comes with DC motor.
GEAR-70093 -- 3-Speed Crank Axle Gearbox kit -- US$14.85
A 3-Speed crank axle gearbox to build the 1 of 3 ratios: 16.6:1 (high speed), 58.2:1 (medium speed), and 203.7:1 (low speed). Assembly instruction included. Assembly instructions included. Use with any combination of construction and robotics projects in this page and our mechanical parts . It comes with DC motor.
GEAR-70110 -- 4-SPEED CRANK AXLE GEAR BOX -- US$15.75
Gear Ratios: 126:1 441:1 1543.5:1 5402:1. Motor: FA-130. This 4-Speed Crank Axle Gear Box is small but has a lot of power. There are four gear ratios to choose from, including the slowest ratio that allows for two rotations per minute. Two crank arms are included for added flexibility in the design of projects. Use with any combination of construction and robotics projects in this page and our mechanical parts . It comes with DC motor.
GEAR-72005 -- 6-Speed High Power Gearbox kit -- US$17.95
A 6-Speed high power gearbox to build the 1 of 6 ratios: 11.6:1 (very high speed), 29.8:1, 76.5:1, 196.7:1, 505.9:1, and 1300.9:1 (very low speed). Assembly instructions included. Use with any combination of construction and robotics projects in this page and our mechanical parts . It comes with DC motor.
GEAR-72004 -- Worm Gear Box Kit -- US$17.85
 
A slower speed, higher power gear kit with fast, quiet polyacetal resin gears. Build for one of two ratios: 216.1 or 336 to 1. Well suited for steering mechanisms and arm mechanisms. Size: 76 x 31 x 30 mm . 80 mm long shaft. Assembly instructions included. Use with any combination of construction and robotics projects in this page and our mechanical parts . It comes with DC motor.
GEAR-72003 -- High Power Gear Box Kit -- US$17.95
 
A strong, high torque gear kit. Build for one of two ratios: 41.7 or 64.8 to 1. Easily connected to wheels, cams, grippers, etc. Ideal for drive systems needing speed and strength. Size: 60 x 28 x 41 mm . 80 mm long shaft. Assembly instructions included. Use with any combination of construction and robotics projects in this page and our mechanical parts . It comes with DC motor.
GEAR-72002 -- HIGH SPEED GEAR BOX H.E. -- US$17.95
Gear Ratios: 11.6:1 18.1:1. Motor: RE-260. The High Speed Gear Box, High Efficiency, is perfect for high speed applications. Two gear ratios are possible, and several styles of crank arms are supplied for a variety of uses. A RE-260 motor is included. The gear box can be mounted vertically or horizontally. Use with any combination of construction and robotics projects in this page and our mechanical parts . It comes with DC motor.
GEAR-70103 -- UNIVERSAL GEAR BOX -- US$14.85
Gear Ratios: 101:1 269:1 719:1. Motor: FA-130. The Universal Gear Box works well in a variety of applications and can be mounted several ways. A hex shaft and a threaded shaft are included to give the builder flexibility in design. The plastic gears and metal gear box are all high quality. A FA-130 motor has also been included. Use with any combination of construction and robotics projects in this page and our mechanical parts . It comes with DC motor.
GEAR-70001 -- HI-SPEED METAL GEAR BOX (WITHOUT MOTOR) -- US$9.95
Gear Ratios: 16:1. The package comes with metal gears, two shafts, screws and nuts, and metal motor brackets. Assembly instructions are included. The kit does not include motor. Mabuchi motors RE140, RE260, FA130 can be used with this package. Please check with our complete Mabuchi motor selections .
GEAR-70002 -- HI-POWER METAL GEAR BOX (WITHOUT MOTOR) -- US$9.95
Gear Ratios: 64:1. The package comes with metal gears, two shafts, screws and nuts, and metal motor brackets. Assembly instructions are included. The kit does not include motor. Mabuchi motors RE140, RE260, FA130 can be used with this package. Please check with our complete Mabuchi motor selections .
HW-70096 -- OFF-ROAD TIRES (1 PAIR) --US$8.85
This is a set of two durable, semi-pneumatic, Off-Road Tires with wheels that work well in a variety of applications. The thick tread is good for off-road conditions. No screws are necessary, just push them onto a shaft.Diameter: 50mm Width: 30mm . Shaft: 3x 100mm . Use with any combination of construction and robotics projects in this page and our gearbox kit .
HW-70101 -- TRUCK TIRE SET (4 TIRES) --US$8.85
This set of four truck tires with wheels works well in construction and robotics projects in this page and our gearbox kit . The hex shaft inserts directly into the wheel with no tools. This tire set installs directly onto many of gearbox shafts.Diameter: 36mm . Width: 16mm . Shaft: 3x 100mm .
HW-70111 -- SPORTS TIRE SET (1 PAIR) --US$8.95
The Sports Tire Set is a good all-around tire. Two sets of hubs have been included with a wrench to change the hubs (also included). One set of hubs is for hex shafts like those on many of construction materials in this page and our gearbox kit . Gear boxes, and the other set of hubs is for round shaft applications. Diameter: 56mm .Width: 25mm . Hubs: 2 round shaft and 2 hex shaft.
HW-70145 -- NARROW TIRE SET (1 PAIR) --US$8.59
The Narrow Tire Set works well in on-road conditions. Two sets of hubs have been included along with a wrench to change the hubs. One set of hubs is for hex shafts like those on many of construction materials in this page and our gearbox kit , and the other set of hubs is for round shaft applications. Diameter: 58mm . Width: 16mm . Hubs: 2 round shaft and 2 hex shaft.
HW-70099 -- SPONGE TIRES (1 PAIR) -- US$7.55
A pair of sponge tire that fit to the construction materials in this page and our gearbox kit . The diameter of the wheel is 48 mm . The tire is make of sponge for long lasting. The kit comes with a 10cm long 3mm hex shaft for mounting the tires. Diameter: 48mm . Width: 27mm .
HW-73333 -- Servo Wheels (1 PAIR) -- US$8.99
Here is an easy way to mount wheels to your servos. This molded plastic wheel comes in yellow with a lack traction band. The wheel is 2-3/4" across and 5/16" thick. This wheel will fit Futaba as well as our Standard Servo .
HW -4CM -ROLLER -- 4cm roller -- US$15.95
This wheel makes a fine caster. It may also be used in a holonomic drive design.
Specifications:
Dimension 40mm /1.5" Outer Diameter
Weight 1.1 oz
Hub 29mm /1.1"
Axle Bore 8mm
HW -6CM -ROLLER -- 6cm roller -- US$29.95
This is the 6cm omni-directional polyurethane roller wheel from North American Roller Products. This wheel has a softer polyurethane roller that offers improved traction on slick surfaces and short pile carpet.
Dimension 60mm /2.375" Outer Diameter
Weight 4 oz
Hub 49mm /1.9"
Axle Bore 8mm
Roller Capacity 50 lbs .
HW -8CM -ROLLER -- 8cm roller -- US$39.95
This is the 8cm omni-directional polyurethane roller wheel from North American Roller Products. This wheel has a softer polyurethane roller that offers improved traction on slick surfaces and short pile carpet.
Dimension 80mm /3.125" Outer Diameter
Weight 10 oz
Hub 63.9mm / 2.518"
Axle Bore 8.4mm
Roller Capacity 100 lbs .
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