Solarbotics

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US$132.65
This is a strong, modular design with over 500 man-hours of development and 21 prototypes behind it. Comes with Black wheels and Red Plates. This kit features: Powerful GM8 gear motors powered by a robust L293D motor driver, Four opto-reflector edge sensors (fifth edge sensor position available when using microprocessor brainboard), Two 38kHz IR emitters and detectors for opponent detection, and much more.
Delivery within 2-3 weeks
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US$7.48

This motor offers 48.61 in*oz of torque at 3VDC, rotating 360 degrees every 1.5 seconds (24 rpm - just a hair slower than a servo), drawing 400mA at stall (free running at 40mA).

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US$7.48
Great for robots needing speed over torque! This 143:1 gear motor spins at 70RPM at 5V, drawing 670mA at stall generating 43 in*oz torque (free running at 57.6mA).
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US$7.48
This motor goes 66RPM at 5V, drawing 670mA at stall generating 43 in*oz torque (free running at 73.2mA). 
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US$1.49

These new hard plastic wheels are specially designed for our GM2, GM3, GM8, GM9 and GM17 gear motor output shafts. Size: 3.0 x 0.7 x 3.0 cm.

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US$4.23
The hubs dimension out at 69mm (just under 2-5/8"), by 7.62mm wide (0.3"). Size: 6.8 x 0.7 x 5.0 cm.
Delivery within 2-3 weeks
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US$2.68
These precision laser-cut steel brackets match the features on the gear motor, and securely clamp them down to your project.
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US$2.41

These precision laser-cut steel brackets match the features on the gear motor, and securely clamp them down to your project.

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US$4.23
Looking for a quick and easy way to attach a wheel to a servo for a wheeled robot? Here's the answer! This custom-molded wheel is designed to fit to most servo hubs (excluding Hitec), and give solid traction to your robot. The hubs dimension out at 65mm (just under 2-5/8"), by 7.62mm wide (0.3"). Adding one molded-on thermoplastic silicone "tire" to the hub makes the rolling diameter 67mm (2-5/8"). Each wheel comes with ONE black special-grip tire. Compatible with GWS and Parallax continuous rotation servos. We like to double-layer them for an even softer grip in the robot sumo ring! Size: 6.5 x 0.7 x 8.0 cm
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US$3.22

The GM10 Wheel works very well with the GM10 gear motor. It measures 25mm (1") in diameter, 5.7mm wide (.22"), and uses well-proven traction-band tires.

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US$8.92
The BVR is a regulated 5 Volt supply that is capable of outputting up to 500 mA of current.
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US$7.48

This motor offers 48.6 in*oz of torque at 3V, rotating 360 degrees every 1.5 seconds (24 rpm - just a hair slower than a servo), drawing 400mA at stall (free running at 40mA).

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US$3.85
This is a high powered motor that fits in the same form factor as used by the GM2/GM3 & GM8/GM9 style gear motors.
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US$4.49
At 1.5V it draws on 17.5mA @ 9700rpm & 120mA. At 3V it draws 32.1mA @ 31900 & 260mA stalled.
Delivery within 2-3 weeks
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US$4.23
The hubs dimension out at 69mm (just under 2-5/8"), by 7.62mm wide (0.3"). Size: 6.8 x 0.7 x 5.0 cm. 
Delivery within 2-3 weeks
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