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Author Topic: motor specifications  (Read 1676 times)

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Offline mobzTopic starter

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motor specifications
« on: October 30, 2007, 07:51:27 PM »
In choosing motors i dont know which one to choose from to design a maze traversing robot.
Im looking for speed and power and i will be using a 6xAA NiMH battery pack(2500 mA/h)

the specs are
1.       143:1,                               
           43 in*oz,
           70 rpm,
           5V, 57.6 mA[/color]

2.       120:1,
         25 in*oz,
         145 rpm,
        5V, 88 mA

An explanation will be appreciated

Offline frank26080115

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Re: motor specifications
« Reply #1 on: October 30, 2007, 08:06:48 PM »
just high school physics
143:1 is your gear ratio
43 in*oz is your torque
70 rpm is your revolutions per minute
5V, 57.6 mA your motor runs on 5 volts, with a nominal operating current of 57.6 milliamperes

Offline mobzTopic starter

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Re: motor specifications
« Reply #2 on: October 30, 2007, 08:18:22 PM »
just high school physics
143:1 is your gear ratio
43 in*oz is your torque
70 rpm is your revolutions per minute
5V, 57.6 mA your motor runs on 5 volts, with a nominal operating current of 57.6 milliamperes

thanks frank so the  first one is better?

Offline frank26080115

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Re: motor specifications
« Reply #3 on: October 30, 2007, 09:29:44 PM »
i'd personally pick the 2nd one

it's either got a more powerful motor or is more efficient

if it goes too fast or can't carry too much weight, just use smaller wheels
« Last Edit: October 30, 2007, 10:06:16 PM by frank26080115 »

Offline Admin

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Re: motor specifications
« Reply #4 on: October 31, 2007, 07:20:45 AM »
This should help:
http://www.societyofrobots.com/mechanics_dynamics.shtml
and this too:
http://www.societyofrobots.com/RMF_calculator.shtml

You must factor in robot weight and wheel diameter, too.

Is a 43 in*oz motor strong enough to lift a rock? Depends on how big the rock is ;D

 


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