> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # Tamiya 70203 Low-Current Motor Gearbox (3-Speed) **Type:** Product page · **SKU:** POLOLU-2196 · **Brand:** [Pololu](https://core-electronics.com.au/brands/pololu-australia) **Page:** https://core-electronics.com.au/tamiya-70203-low-current-motor-gearbox-3-speed.html ([markdown](https://core-electronics.com.au/tamiya-70203-low-current-motor-gearbox-3-speed.html.md)) 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. ## Pricing - **Price:** $37.95 (inc GST) — $34.50 AUD, exc GST - **Quantity discounts:** 10+ $33.12 (exc GST) · 25+ $32.08 (exc GST) ## Availability & dispatch - Available with a lead time — expect dispatch between Sep 25 and Sep 28. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=POLOLU-2196:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/POLOLU-2196:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description 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. | [![](https://core-electronics.com.au/attachments/localcontent/0J4309_24297fe96a9.jpg)](https://core-electronics.com.au/attachments/localcontent/0J4309_157617213b8.jpg) | |---| | 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](https://core-electronics.com.au/st-1-mini-diagonal-cutter.html) 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](https://core-electronics.com.au/category/35/tamiya-wheels) Pololu 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](https://core-electronics.com.au/drv8835-dual-motor-driver-carrier.html) or the [DRV8833 motor driver carrier](https://core-electronics.com.au/drv8833-dual-motor-driver-carrier.html). The mounting holes on the gearbox are compatible with the [Tamiya 70098 universal plate set](https://core-electronics.com.au/tamiya-70098-universal-plate-set.html) and other [Tamiya construction series products](https://core-electronics.com.au/category/61/tamiya-products) **Features** - Free-Run Speed @ 3 V: see picture to the right for RPM table | ![](https://core-electronics.com.au/attachments/localcontent/0J4343_19560e27284.jpg) | |---| | Tamiya 70203 low-current gearbox torque and RPM at 3 V. | - Free-run current @ 3 V: 20 mA - Stall current @ 3 V: 670 mA - 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 Pololu's [adapter for LEGO wheels](https://core-electronics.com.au/3mm-hexagonal-shaft-adapter.html) and many of [Tamiya’s wheels](https://core-electronics.com.au/category/35/tamiya-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. **People often buy this product together with:** | [![Tamiya 70105 3mm Diameter Shaft Set](https://core-electronics.com.au/attachments/localcontent/0J2705_32003198ca.jpg)](https://core-electronics.com.au/tamiya-70105-3mm-diameter-shaft-set.html) | [Tamiya 70105 3mm Diameter Shaft Set](https://core-electronics.com.au/tamiya-70105-3mm-diameter-shaft-set.html) | |---|---| | [![Tamiya 70168 Double Gearbox Kit](https://core-electronics.com.au/attachments/localcontent/0J258_3525435be7.jpg)](https://core-electronics.com.au/tamiya-70168-double-gearbox-kit.html) | [Tamiya 70168 Double Gearbox Kit](https://core-electronics.com.au/tamiya-70168-double-gearbox-kit.html) | |---|---| | [![Tamiya 70188 Mini Motor Gearbox (8-Speed) Kit](https://core-electronics.com.au/attachments/localcontent/0J2210_51052fce1e.jpg)](https://core-electronics.com.au/tamiya-70188-mini-motor-gearbox-8-speed-kit.html) | [Tamiya 70188 Mini Motor Gearbox (8-Speed) Kit](https://core-electronics.com.au/tamiya-70188-mini-motor-gearbox-8-speed-kit.html) | |---|---| **General specifications** | Typical operating voltage: | 3 V | |---|---| | Gear ratio options: | 12.7, 38.2, 114.7 :1 | | No-load current @ 3V: | 20 mA[1](https://core-electronics.com.au/#note1) | | Stall current @ 3V: | 670 mA | | Color: | clear | **Notes:** 1This 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. ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/t/a/tamiya_70203_low_current_motor_gearbox__3_speed___pololu_2196__00.jpg)