Pitch Diameter and Drive Ratio. Pulleys and belts have two uses; to increase or reduce speed or torque, or to transfer power from one shaft to another. If the transfer of power is all you need, then two pulleys of the same diameter will do the trick.
Last night's Republican presidential debate drew an average of 22.9 million viewers for CNN, making it the most watched program in the network's 25-year history, the channel reported Thursday. The ratings were larger than the average NFL broadcast, at 19 million viewers, receives.
You can also watch the debate live on television on NBC, CBS, ABC, CNN, Fox News, MSNBC and other channels. Another place to keep an eye on tonight is Twitter. Don't miss our list of 100 must-follow Twitter feeds and Twitter's #Debates page.