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Increase speed using pulleys
Last Post 12 Sep 2012 03:54 PM by Nathaniel. 1 Replies.
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Casino799
New Member
New Member
Posts:1

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21 Jun 2012 06:37 PM
    Hello:
    I am using a 3 inch stainless steel pulley to power a 24 foot cable around two bike rims. The motor is a 3/4hp garage door opener motor.
    The unit is a moving target assembly, the targets being paper only for pistol and rifle practice. The cable is 1/8th inch, stainless steel braided.

    I want to increase the speed of the targets from point A to Point B, approximately 9 feet. (The target will then reverse direction.)

    Is there a formula to use to increase the speed of the cable turning?

    I have a video I can send to show you the current speed, if you would like to see it.

    Thanks.
    Nathaniel
    Basic Member
    Basic Member
    Posts:193

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    12 Sep 2012 03:54 PM
    Assuming that the rotational speed of your motor remains the same the speed cable will double if you double the diameter of your drive pulley.

    In this case you would increase the diameter of the pulley from three to six inches.

    Niel Leon
    engineering.com
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