Interesting mechanical fact:This is a GIF I made to help explain to my son this interesting mechanical fact. ..in the GIF, the gear on top is called a worm gear. It's driving the big sprocket. That's the only way it will work. It's not possible for the sprocket to turn the... See More »
Question Of The Week Poll (11) See Poll OptionsBoth Of These Decades Seem To Be Loved By Alot Of People..........So.........Which Decade Did You Personally Like Better.........The 80s or The 90s?
