I am attempting to build a “Useless Machine” from scratch. Here is a video of the device: http://www.youtube.com/watch?v=Z86V_ICUCD4 .
Also [if you want to], Google "The Most Useless Machine EVER! instructables" and click the first link for instructions on how to build it (I would link it directly but I am only allowed to post two links)
Now onto the question: I need a geared motor (or continuous rotation servo) with enough torque to rotate a 5cm arm that will lift an approx. 60 gram wooden lid and flick a switch. I was wondering if this geared motor will suffice: http://www.robotgear.com.au/Product.aspx/Details/700-Dagu-LBD-Little-Black-Duck-Gearmotor-and-wheel-kit-Pair.
Also, as I am powering it with 4 AA batteries, would you know how I would be able to lower the RPM of the motor from 100RPM to 50-30RPM while not sacrificing the torque of the motor.
The way I have written this post might make me sound like a real novice at electrical engineering, and that’s mostly because I am a real novice at electrical engineering. So please, if you are able to help me, write your answer like you are speaking to a 10 year old.