Monday, November 24, 2008

Getting in Gear Investigation : Torque vs Speed


Today, we explored the wonder of gears. Every day, in millions of cars worldwide, gears turn, and change to serve different purposes. We explored this phenomenon today in class, using our NXT taskbot. The first thing we did, was to put the largest gear we had on the driving gear, this gear had 24 teeth. We then put the smallest, 8 tooth, on the driven axle, and watched our robot go at amazing speeds! Just a few minor modifications to the steering mechanism, and ramping the speed up to 100, and we were really flying. This is beacause the driving gear was 3 times as big as the driven gear, meaning that there was a 3:1 gear ratio, in turn meaning that the driven gear turned 3 times for every time that the driving gear turned. Afterwards, we traded spaces, and put the small gear into the driving spot and vice versa. This created mountain-moving torque capabilites, and gave our bot amazing pushing power.

3 comments:

K.Yong said...

Wow!! So professional in explanation, I am glad to have you as a partner since I am a slacker (Joking). The part about the ratios was very true (since we have tried it) but I think we should try the 40 teeth since it would be extremely fast, as my assumption. Out of all, if it actually works, 5:1 ratio would be extremely cool (then robot might even make a flip WOW!!!)

Anonymous said...

cool. nice way of describing what the gears do.

Aarshin said...

Awesome blog post bart.
And yeah as kenny said, the 5:1 ratio would be really one to watch.