tag:blogger.com,1999:blog-11336780.post-50662530552880654702008-06-21T08:07:00.002-05:002008-06-21T08:09:25.822-05:00<a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://www.redhillsupply.com/ppp/images/FA2B.jpg"><img style="margin: 0pt 10px 10px 0pt; float: left; cursor: pointer; width: 200px;" src="http://www.redhillsupply.com/ppp/images/FA2B.jpg" alt="" border="0" /></a>If a wire rope leads over a sheave and on to a drum on an <strong><a href="http://www.redhillsupply.com/air-winches.htm">air winch</a></strong>, the rope will not remain in alignment with the sheave groove. Instead, it will deviate to either side depending upon the width of the drum and its distance from the fixed sheave, often called the lead sheave. The angle between the center line through the lead sheave and the centerline of the rope leading to the drum is called the fleet angle. Experience has shown that the best wire rope service is obtained when the maximum fleet angle is not more than 1 1⁄2° for smooth drums, and 2° for grooved drums. Fleet angles of 1 1⁄2° and 2° are the equivalents of approximately 38 feet and 29 feet, respectively, of lead for each foot of drum width either side of the center line of the lead sheave.cooper99http://www.blogger.com/profile/03189580713538075779noreply@blogger.com