### Author Topic: servo motor moment  (Read 1995 times)

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#### bob

• Jr. Member
• Posts: 19
##### servo motor moment
« on: November 16, 2009, 10:44:03 PM »
I buy the polypropylene 10 mm thickness and the size is 40 cm X 20 cm
my problem is that is weigh a lot a proximate 2 kg maybe more
now I afraid that the motor can't drag the 50 dollar robot
also the wheels are heavy a proximate the three wheels 1 kg and have diameter of 12.5 cm
are the servo motor of the 50 dollar robot can drag robot with total weigh 4 kg ?

#### SmAsH

• Supreme Robot
• Posts: 3,959
• SoR's Locale Electronics Nut.
##### Re: servo motor moment
« Reply #1 on: November 17, 2009, 12:10:16 AM »
Why dont you try it? Testing is the best way to find something out...
Do you have the servos already?
Howdy

#### bob

• Jr. Member
• Posts: 19
##### Re: servo motor moment
« Reply #2 on: November 17, 2009, 03:03:59 AM »
no i don't have the servo
i need to buy servos because of this i ask my question

#### Razor Concepts

• Supreme Robot
• Posts: 1,856
##### Re: servo motor moment
« Reply #3 on: November 17, 2009, 05:05:09 AM »
Why dont you try it? Testing is the best way to find something out...
Well.. calculating it should be the best

#### SmAsH

• Supreme Robot
• Posts: 3,959
• SoR's Locale Electronics Nut.
##### Re: servo motor moment
« Reply #4 on: November 18, 2009, 01:19:22 AM »
Yeah, but calculating is hard!
Howdy

#### Antonb

• Jr. Member
• Posts: 18
##### Re: servo motor moment
« Reply #5 on: November 28, 2009, 10:57:26 AM »
As long as you dont need to move your robot on sloped surfaces the modified servos will work fine but remember that with so much weight you ran into other problems. The heavier your system the more inertia it will have which means that you have slow acceleration, is difficult to stop and furthermore a motor-forced stop condition may lead to your gears getting damaged.
"Robotics Education for the Nation"

#### Pierre

• Jr. Member
• Posts: 47
##### Re: servo motor moment
« Reply #6 on: November 28, 2009, 12:24:44 PM »
Quote
are the servo motor of the 50 dollar robot can drag robot with total weigh 4 kg ?
Spec sheet for HS-311 of the \$50 robots and the Stall Torque is 3 kg.

• Robot Overlord
• Posts: 202