bb gun tank

Submitted by hoohoohama on June 12, 2010 - 2:23pm.

Hello! I am currenty trying to build a robotic bb gun tank.  I have only built the gun part of the tank and I got the two motors that will pull back the barrel and fire the bb gun.  I am only 9 years old and I have never built a robot from sratch yet. I have built robots with lego nxt and in my school, but never with anything else.  If you are ever buying motors, don't ever buy a motor with 1-3 r.p.m. unless you need a very, very, slow motor because I made that mistake when I bought my motors.  Now I have to lower the extra torque to make the r.p.m. go higher using gears.  I will update this page as soon as I can

update:1

I don't have much supplys so instead of using gears, I am going to subsitute the gears with rubber wheels for friction and making the speed faster.

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