Tamiya 70203 Low-Current Motor Gearbox (3-Speed)

This gearbox features a low-current brushed DC motor, which is great for projects where you want to keep your power consumption to a minimum. Its single gear train can be assembled to have one of three gear ratios: 12.7:1, 38.2:1, or 114.7:1.

Overview

The Tamiya 70203 Low-Current Motor Gearbox kit includes one brushed DC motor and all the gears and parts to build any of the three possible gear ratio configurations: 12.7:1, 38.2:1, 114.7:1. The three gear ratio options give you the flexibility to choose the best speed and torque for your project.

Tamiya 70203 low-current gearbox kit.

The kit includes step-by-step illustrated instructions in both Japanese and English. A scanned copy of the instructions is available on the Pictures tab. The kit can be built with just a screwdriver, but the instructions recommend having side cutters and a modeling knife on hand.

Complementary products

The output shaft included in this kit is a 3 mm hexagonal axle that is 10 cm (about 4″) from tip to tip. The axle works with many of the Tamiya wheels we carry. The low-voltage motor runs on 0.5 V to 3 V and draws less than 1 A, making it a perfect candidate for the DRV8835 or the DRV8833 motor driver carrier . The mounting holes on the gearbox are compatible with the Tamiya 70098 universal plate set and other Tamiya construction series products

Features

• Free-Run Speed ​​@ 3 V: see picture to the right for RPM table

  Tamiya 70203 low-current gearbox torque and RPM at 3 V.

• Free-run current @ 3 V: 20 mA
• Stall current @ 3V: 670mA
• Torque @ 3 V: see picture to the right for torque table
• Three different gear ratios:
  • 12.7:1
  • 38.2:1
  • 114.7:1
• 3 mm hexagonal output shaft (length: 100 mm) compatible with our adapter for LEGO wheels and many of Tamiya's wheels
• Two mounting orientations
• Transparent gear housing shows the internal mechanisms
• Crank plates

Note: The Tamiya 70203 Low-Current Motor Gearbox is a kit ; assembly is required.