Comments on: I have a drill press & i want to change speeds. It has 3 pulleys that are 9 sizes ranging big to small? http://www.drillpressreview.com/2565/i-have-a-drill-press-i-want-to-change-speeds-it-has-3-pulleys-that-are-9-sizes-ranging-big-to-small/ Drill Press Reviews and Informations Sun, 20 May 2012 21:04:15 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: Guest http://www.drillpressreview.com/2565/i-have-a-drill-press-i-want-to-change-speeds-it-has-3-pulleys-that-are-9-sizes-ranging-big-to-small/comment-page-1/#comment-6188 Guest Mon, 12 Dec 2011 21:07:26 +0000 http://www.drillpressreview.com/2565/i-have-a-drill-press-i-want-to-change-speeds-it-has-3-pulleys-that-are-9-sizes-ranging-big-to-small/#comment-6188 The larger the driving pulley in relation to the driven pulley the faster the drill turns. The smaller the driving pulley in relation to the driven pulley the slower the drill turns. (Driving pulley = pulley on motor) To understand the concept: If the circumference of the driving pulley is two times the circumference of the driven pulley, every time the driving pulley rotates one time, the driven pulley rotates two times. Or vice versa. The larger the driving pulley in relation to the driven pulley the faster the drill turns. The smaller the driving pulley in relation to the driven pulley the slower the drill turns. (Driving pulley = pulley on motor) To understand the concept: If the circumference of the driving pulley is two times the circumference of the driven pulley, every time the driving pulley rotates one time, the driven pulley rotates two times. Or vice versa.

]]> By: robb35c http://www.drillpressreview.com/2565/i-have-a-drill-press-i-want-to-change-speeds-it-has-3-pulleys-that-are-9-sizes-ranging-big-to-small/comment-page-1/#comment-6187 robb35c Mon, 12 Dec 2011 20:26:13 +0000 http://www.drillpressreview.com/2565/i-have-a-drill-press-i-want-to-change-speeds-it-has-3-pulleys-that-are-9-sizes-ranging-big-to-small/#comment-6187 There is usually a chart on the bottom side of the lid that shows which combination of pulleys produce which spindle speeds. There is usually a chart on the bottom side of the lid that shows which combination of pulleys produce which spindle speeds.

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