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Raspberry Pi Lego car

Hello all,

I'm making my first robot using Raspberry Pi. My robot looks like a car with three wheels. Two of them are in front and have connection to motors, The third one is behind and it's no connection to motors.

I'm planning to use 2 simple motors (for each front wheel one). For now my robot weight 260g, and i have to add two motors and battery and i little of more constuction for holding motors and battery. I'm already found which type of motor should i use:

Motraxx MOTOR X-FLY 400 or Moteaxx MOTOR X-FLY 280.

First is stronger with 37.7 W. and second provide 13.8 W. Because I don't want to have very fast robot I've made some kind of transfer to power:

http://shrani.si/f/3G/4a/3E6yI19S/dsc02249.jpg

 

So...do you think X-FLY 280 will be enough or I shoud buy X-FLY 400. Remember left wheel will have motor and right wheel will have its own motor. So 2 motors on board.

 

Thank you for your opinion!

Have a nice day,

Yacked2

Image of my robot

robot

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Hi, thank you for your replay. I've made new torque system, Motor has to do 33 round for one round wheel. Do you think this will be enought ?