The Tamiya 70097 twin-motor gearbox is a small 76mm plastic gearbox. It contains two small DC motors that drive separate 3mm hexagonal output shafts. There are two ways to put the kit together: with a high-speed 58:1 gear ratio or with a slower 203:1 gear ratio. Either way, the motors provide plenty of power to drive any small robot.
The two motors in the twin-motor gearbox are rated for 3 volts but will typically work fine up to 6 volts. When using this product with the dual serial motor controller (or any motor driver based on an H-bridge), keep in mind that up to a few volts (depending on the load) are lost on the transistors of the H-bridge, so that a 4.5 volt battery delivers about 3 volts to the motors, giving them a reasonable amount of power. Motor overheating can be caused by excessive stalling, even at very low voltages. We recommend that you use stall-detection sensors, or just watch your robot, to make sure that it doesn't stall for more than a few seconds at a time.
The 3mm, hexagonal output shaft is compatible with all four types of Tamiya wheels.
(Note: This gearbox uses the 18100 motor variant)
| Tamiya Motor Comparison | |||||||||||
| Tamiya Code | 70168 | 70167 | 70097 | 70093 | 70103 | 70110 | 72001 | 72002 | 72003 | 72004 | 72005 |
| Our Part Number: | 1452- 001 | 1452- 002 | 1452- 003 | 1452- 004 | 1452 -006 | 1452- 005 | 1452- 007 | 1452- 008 | 1452- 009 | 1452- 010 | 1452- 011 |
| Worm Gear | X | X | |||||||||
| 4:1 | X | ||||||||||
| 5:1 | X | ||||||||||
| 12:1 | X | X | |||||||||
| 12.7:1 | X | X | |||||||||
| 16:1 | X | ||||||||||
| 17:1 | X | ||||||||||
| 18:1 | X | ||||||||||
| 20:1 | X | ||||||||||
| 25:1 | X | ||||||||||
| 30:1 | X | ||||||||||
| 38:1 | X | X | |||||||||
| 42:1 | X | ||||||||||
| 58:1 | X | X | |||||||||
| 65:1 | X | ||||||||||
| 77:1 | X | ||||||||||
| 80:1 | X | ||||||||||
| 100:1 | X | ||||||||||
| 101:1 | X | ||||||||||
| 115:1 | X | X | |||||||||
| 126:1 | X | ||||||||||
| 197:1 | X | ||||||||||
| 204:1 | X | X | |||||||||
| 216:1 | X | ||||||||||
| 269:1 | X | ||||||||||
| 336:1 | X | ||||||||||
| 344:1 | X | X | |||||||||
| 400:1 | X | ||||||||||
| 441:1 | X | ||||||||||
| 506:1 | X | ||||||||||
| 719:1 | X | ||||||||||
| 1301:1 | X | ||||||||||
| 1543:1 | X | ||||||||||
| 5402:1 | X | ||||||||||
| Our Part Number: | 1452- 001 | 1452- 002 | 1452- 003 | 1452- 004 | 1452- 006 | 1452- 005 | 1452- 007 | 1452- 008 | 1452- 009 | 1452- 010 | 1452- 011 |
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