Fastest Pololu Micro Metal Gearmotor?

Question

I am building a line following robot, and I can't decide which motor would be the fastest. Below I have posted a table of the Micro Metal Gearmotors from Pololu Robotics and Electronics. Here is a product listing and chart of all the motors. Please post the product name, and a link if possible. Thanks! (If you have any other ideas to make a low profile robot awesome, post it in the comments below)

Gearbox Shaft Only means it is the shaft directly from the motor
Gearbox & Motor Shafts is an extended shaft

Motor Type	Stall Current @ 6 V	No-Load Speed @ 6 V	Stall Torque @ 6 V	Gearbox Shaft Only	Gearbox & Motor Shafts
high-power (HP)	1600 mA	6000 RPM	2 oz-in	5:1 micro HP
		3000 RPM	4 oz-in	10:1 micro HP	10:1 micro HP
		1000 RPM	9 oz-in	30:1 micro HP	30:1 micro HP
		625 RPM	15 oz-in	50:1 micro HP	50:1 micro HP
		400 RPM	22 oz-in	75:1 micro HP	75:1 micro HP
		320 RPM	30 oz-in	100:1 micro HP	100:1 micro HP
		200 RPM	40 oz-in	150:1 micro HP	150:1 micro HP
		140 RPM	50 oz-in	210:1 micro HP
		120 RPM	60 oz-in	250:1 micro HP
		100 RPM	70 oz-in	298:1 micro HP	298:1 micro HP
		32 RPM	125 oz-in	1000:1 micro HP	1000:1 micro HP
medium-power (MP)	700 mA	2200 RPM	3 oz-in	10:1 micro MP	10:1 micro MP
		730 RPM	8 oz-in	30:1 micro MP
		420 RPM	13 oz-in	50:1 micro MP
		290 RPM	17 oz-in	75:1 micro MP	75:1 micro MP
		220 RPM	19 oz-in	100:1 micro MP	100:1 micro MP
		150 RPM	24 oz-in	150:1 micro MP
		75 RPM	46 oz-in	298:1 micro MP
low-power	360 mA	2500 RPM	1 oz-in	5:1 micro
		1300 RPM	2 oz-in	10:1 micro
		440 RPM	4 oz-in	30:1 micro	30:1 micro
		250 RPM	7 oz-in	50:1 micro	50:1 micro
		170 RPM	9 oz-in	75:1 micro
		120 RPM	12 oz-in	100:1 micro	100:1 micro
		85 RPM	17 oz-in	150:1 micro
		60 RPM	27 oz-in	210:1 micro
		50 RPM	32 oz-in	250:1 micro
		45 RPM	40 oz-in	298:1 micro	298:1 micro
		14 RPM	70 oz-in	1000:1 micro

dougw · Accepted Answer

It depends on how big your robot is, the diameter of the wheels and how much traction your wheels have.

If you have 2 inch wheels driven by a 200 rpm shaft the robot will travel around 20 inches per second, which is pretty fast for typical cornering requirements. You can scale the speed back using variable PWM drive to the gearmotors.

mcb1 · Answer

Not sure what is so hard about this. The 6000 rpm is the fastest. Whether it is suitable for your application is a different story. This would depend on the power you have available (battery and controller), weight, and if you have PWM for the motor control. Wheel size also comes into play. The only info you gave was :- ......I am building a line following robot ...... to make a low profile robot There are some links here http://www.element14.com/community/search.jspa?q=line+following There are some other ideas here. http://www.element14.com/community/thread/41979/l/arduino-object-avoidance-robot The Raspberry Pi "Turtle Bot" Breaths Life Into Lesson 2 Mark

Fastest Pololu Micro Metal Gearmotor?

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