1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Gearbox design

  1. Nov 20, 2008 #1

    I have to design a gearbox for a drum, the drum should be brought uniformily to a speed of 7rpm in 8 seconds, I have choosed a motor of 715 rpm output, whats the gear ratio I should use in designing the gearbox?

  2. jcsd
  3. Nov 21, 2008 #2
    Well, the equation for gear ratios is;

    w1 / w2 = N2 / N1 = Gear Ratio

    w = angular velocity
    N = number of gear teeth or size of the gear

    In a nutshell the ratio of angular velocities and torque are inversly proportional to eachother. However this is only for simple gear joints. If your using a complex or planetary gear system then things get a little bit more complicated.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Gearbox design Date
Flywheel and Gearbox Coupling Help Jan 8, 2016
Selecting suitable gears for a gearbox Aug 18, 2015
Gearbox and flywheel Aug 2, 2015
Gearbox design calculations Feb 13, 2009