for weapon..? a old wiper motor of an maruti!!!! I agree with you that wiper motors have an decent torque but at 60RPM for a spinning weapon?it is USELESS dude...trust...

If it is an 15kg bot your cannot use heavy duty industrial motors due to size constrain...But for the weapon you can use an 1500 rpm heavy duty 12V DC...

10kg is not the weight of the motors...It denotes the TORQUE

@ Mr.FARJAND I totally disagree with your comment stating that "you need the fastest motor in a roborace competition" n 300 rpm o max 500 rpm is enough for roborace!!...

Sughosh Deshmukhthanks sujith for help what u said is very much true i completly agree with you but there is a weight constraint. we cannot use such heavy motors 3X4...

Sughosh Deshmukhhello engineers...... i m making a robot for the robowars competitions and i need your help for selecting motors for motion and weapon. talking about the motion, which motor...