Tamiya 70190 Mini Motor Multi-Ratio Gearbox (12-Speed) Kit

SKU: POLOLU-1683 Brand: Pololu

Retired Product

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This product has been retired. It is no longer available, but this page has been kept for reference.

The mini-motor gearbox kit from Tamiya makes it easy to get a small robot or plastic model moving. The kit includes one brushed DC motor and all the gears and parts to build any of the twelve possible gear ratio configurations: 4.6:1, 5.1:1, 9.7:1, 10.8:1, 20.4:1, 22.6:1, 42.8:1, 47.5:1, 89.9:1, 99.8:1, 188.7:1, or 209.7:1. The twelve gear ratio options give you the flexibility to choose the best speed and torque for your project. There are two possible output axle locations (only one output location is possible for any given ratio).

Parts included with the Tamiya 70190 mini motor multi-ratio gearbox (12-speed) kit with quarter for size reference.

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, tweezers, and a modeling knife on hand. The gearbox kit’s motor has a 030 form factor that is smaller than the Tamiya gearboxes that use the Mabuchi FA-130 motor.

Box front for Tamiya mini motor multi-ratio gearbox (12-speed) kit.

Instructions for Tamiya mini motor multi-ratio gearbox (12-speed) kit page 4.

Box back for Tamiya mini motor multi-ratio gearbox (12-speed) kit shows the possible gear ratios in green.

Features

  • 030-form-factor motor
    • Speed @ 3 V: 8400 RPM
    • Free-run current @ 3 V: 60 mA
    • Stall current @ 3 V: 600 mA
    • Stall torque @ 3 V: see picture to the right for torque table
  • 12 different gear ratios, which can be adjusted by changing the pinion gear and final gear position
    • 4.6:1
    • 5.1:1
    • 9.7:1
    • 10.8:1
    • 20.4:1
    • 22.6:1
    • 42.8:1
    • 47.5:1
    • 89.9:1
    • 99.8:1
    • 188.7:1
    • 209.7:1
  • 3 mm hexagonal output shaft compatible with Pololu's adapter for LEGO wheels and many of Tamiya’s wheels.
  • Two mounting orientations
  • Mounting holes designed to work with the Tamiya 70098 universal plate set and other Tamiya construction series products.
  • Transparent gear housing shows the internal mechanisms
  • Compact size of approximately 30 x 17 x 31 mm (1.2" x 0.7" x 1.2")

Note: The Tamiya 70190 mini motor multi-ratio gearbox (12-speed) is a kit; assembly is required.

People often buy this product together with:

Tamiya 70103 Universal Gearbox Kit Tamiya 70103 Universal Gearbox Kit
Tamiya 70105 3mm Diameter Shaft Set Tamiya 70105 3mm Diameter Shaft Set
Tamiya 70167 Single Gearbox (4-Speed) Kit Tamiya 70167 Single Gearbox (4-Speed) Kit

General specifications

Typical operating voltage: 3 V
Gear ratio options: 4.6, 5.1, 9.7, 10.8, 20.4, 22.6, 42.8, 47.5, 89.9, 99.8, 188.7, 209.7 :1
No-load motor shaft speed @ 3V: 8400 rpm1
No-load current @ 3V: 60 mA2
Stall current @ 3V: 600 mA
Color: clear

Notes:

1
A theoretical speed of the gearbox output shaft can be computed by dividing this speed by the gear ratio.
2
This is the no-load current of the motor when disconnected from the gears in the gearbox; the no-load current of the entire gearbox with the motor connected will be slightly higher and will vary depending on the gear ratio.

This product is listed in:

Retired

Product Comments

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We deliver Australia-wide with these options (depends on the final destination - you can get a quote on the view cart page):

  • $3+ for Stamped Mail (typically 10+ business days, not tracked, only available on selected small items)
  • $6+ for Standard Post (typically 6+ business days, tracked)
  • $10+ for Express Post (typically 2+ business days, tracked)
  • Pickup - Free! Only available to customers who live in the Newcastle region (must order online and only pickup after we email to notify you the order is ready). Orders placed after 2PM may not be ready until the following business day.

Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.

Some batteries (such as LiPo) can't be shipped by Air. During checkout, Express Post and International Methods will not be an option if you have that type of battery in your shopping cart.

International Orders - the following rates are for New Zealand and will vary for other countries:

  • $11+ for Pack and Track (3+ days, tracked)
  • $16+ for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount will increase based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

Unit 18, 132 Garden Grove Parade
Adamstown
NSW, 2289
Australia

Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.

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