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  1. 24-06-2012 #1
    Robin Hewitt's Avatar
    Lives in Seaford, Sussex, United Kingdom.
    Robin Hewitt
    Last Activity: 17-08-2025 Has a total post count of 1,618. Received thanks 109 times, giving thanks to others 7 times. Is a beta tester for Machinists Network features. Referred 1 members to the community.
    Quote Originally Posted by Jonathan View Post
    the torque is about 2Nm, so it's more like F=2*2*pi*0.9/0.005=2262N
    Where did that 0.9 come from? Is it a fiddle factor?
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  2. 24-06-2012 #2
    Jonathan's Avatar
    Lives in Leicester (Home) or Nottingham University (2nd Home), United Kingdom.
    Jonathan
    Last Activity: 05-04-2020 Forum Superstar, has done so much to help others, they deserve a medal. Has been a member for 9-10 years. Has a total post count of 3,571. Received thanks 325 times, giving thanks to others 8 times. Referred 1 members to the community.
    Quote Originally Posted by Robin Hewitt View Post
    Where did that 0.9 come from? Is it a fiddle factor?
    Approximate efficiency of the ballscrew, when Mad Prof. gets one...
    Old router build log here. New router build log here. Lathe build log here.
    Electric motorbike project here.
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