Remote Controlled combat robot

Hello everyone and thanks for the help. I would like to know what kind of motors I would need for a rc vehicle to move around 5-10 pounds at max, If you could tell me how this torque thing and rpm applies to wieght and pulling ability I would extremely appreciate it. Also it needs to be able to handle tough terrains- mud, hills, debri, etc. - An outdoor fighter.

It will have a paintball or airsoft gun mounted on it and that i am thinking will be moved up and down by a servo and shot (the trigger pulled) by a servo also. 

I am thinking the base will be made out of plywood or thin steel. I have included a video of the robot i am trying to somewhat "clone" or make it off that design. 

Also if you could tell me if tracks are better or wheels. For the wheels/tracks and motors I would like it to be around $40 or less prefferably less haha!

Thanks for helping me and my tight budget! 

Motors-https://www.robotshop.com/banebots-rs-555-12v-7750-rpm-brushed-dc-motor.html

Radio system-http://www.robotmarketplace.com/products/0-GWS-GWT4A.html

https://www.youtube.com/watch?v=6FLvb5odPd4

ah…

the wonders of modern technology.

Spend countless thousands of hours of personal working time, thousands of dollars, develop hi-tech…

all just so we can blow somone’s brains out.

 

anyhow, to answer your question - try here:

https://www.robotshop.com/dc-motor-selection.html?lang=en-us

check your work - I’m not convinced that this actually gives the right answer…

 

 

thanks

ok thanks, but when i type my stuff in it says i need 91.857 torque per ozf-in? is that stall or peak efficentcy? well i guess what im trying to say is would my one motor work?