0-72008 4-Speed Worm Gearbox HE - Tamiya 72008 <p align="left"><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">The Tamiya 72008 4-Speed Worm Gearbox kit includes one brushed DC motor and all the gears and parts to build any of the four possible gear ratio configurations: 84:1, 216:1, 555.4:1, 1428.2:1. The four gear ratio options give you the flexibility to choose the best speed and torque for your project.</font></p>
<p align="left"><font color="#cccccc" size="2" face="Arial, Helvetica, sans-serif">Features</font><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif"><br />
4mm dia. threaded driveshaft included<br />
Included gearbox attachment parts can be easily installed at a choice of two attachment positions<br />
Gearbox is compatible with other Education Construction items<br />
Type 260 motor included - RPM: 5040 Max Efficiency, Voltage: 1.5V Recommended<br />
Separately available 130 and 140 motors can also be attached with the included adapter<br />
H.E. denotes High Efficiency<br />
Pictorial instructions included</font></p>
<p align="left"><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">
Ratios: 84:1, 216:1, 555.4:1, 1428.2:1<br>
Free-run motor shaft speed @ 3V: 9400 rpm<br>
Free-run current @ 3V: 150 mA<br>
Stall current @ 3V: 2700 mA<br>
Motor shaft stall torque @ 3V: 0.97 oz-in<br>
Length: 1.92" (49mm)<br>
Width: 1.24" (31.5mm)<br>
Height: 1.85" (47mm)</font></p>