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  1. m.ahsaniftikhar

    L1 L2 and N running a 3 phase motor? (everyone's confused)

    Thanks to all of you. This was quite helpful.
  2. m.ahsaniftikhar

    L1 L2 and N running a 3 phase motor? (everyone's confused)

    Is there a reason why all online resources are saying that the motor should not start when single-phasing? The motor obviously started and ran in this single phasing condition.
  3. m.ahsaniftikhar

    L1 L2 and N running a 3 phase motor? (everyone's confused)

    Whoa! how did you determine the number of poles? please show me your ways!
  4. m.ahsaniftikhar

    L1 L2 and N running a 3 phase motor? (everyone's confused)

    Here is an image of the motor after I opened it. Does not have a terminal box, just leads. https://files.engineering.com/getfile.aspx?folder=e28ecfcf-8d0a-49d8-aa9d-f1a346178bc6&file=Motor_picture_.jpg
  5. m.ahsaniftikhar

    L1 L2 and N running a 3 phase motor? (everyone's confused)

    @edison123, Connecting this motor to a 3-phase supply is the obvious choice here. What I am trying to understand is how is it possible for this 3-phase motor to run despite a missing phase. The motor is getting L1 L2 and N wires (I have verified with the multimeter that these are L1 L2 N and I...
  6. m.ahsaniftikhar

    L1 L2 and N running a 3 phase motor? (everyone's confused)

    link to image of the sticker on motorhttps://files.engineering.com/getfile.aspx?folder=c3ddbee4-3db9-44bd-8a71-92dbbeb82a22&file=5073c468-403a-44eb-9417-5da8bed29132.jpeg
  7. m.ahsaniftikhar

    L1 L2 and N running a 3 phase motor? (everyone's confused)

    We have a Chinese motor with 6 leads coming out of it. It's a squirrel cage induction motor designed for three-phase power. Interestingly, the machine that this motor was found on is only taking L1 and L2, and N from the main board. This motor is intermittently lifting a heavy load up and down...
  8. m.ahsaniftikhar

    Rack and pinion lift

    What do you make of the overall design though? This module is to be placed within a wheelchair itself. It will allow for the chair to go all the way up to the eye level of another person, and all the way down to allow for floor access. Therefore the design has to be compact and hence...
  9. m.ahsaniftikhar

    Rack and pinion lift

    I was assuming that the meshing distance between is maintained by the bearings. So the rack isn't going to experience a radial force. Please correct me if I am misunderstanding this problem.
  10. m.ahsaniftikhar

    Rack and pinion lift

    A very interesting point about using a wider gear instead of two. Also, the point about load sharing was a very useful tip. Thank you for this. Do you have any other points for me to look out for?
  11. m.ahsaniftikhar

    Rack and pinion lift

    Can you please elaborate on your comment?
  12. m.ahsaniftikhar

    Rack and pinion lift

    I am quite curious about the formula you used to calculate the effective efficiency. Can you please provide me a reference for this for further study and of course to reference it in my documentation.
  13. m.ahsaniftikhar

    Rack and pinion lift

    The reason why I am not using pulleys and cables is that in vertical applications there is a higher chance of a catastrophic failure due to the cable or the chain snapping. My application puts a high priority on safety. Rack and pinion seems to be a safer bet from what I have read. Would you agree?
  14. m.ahsaniftikhar

    Rack and pinion lift

    @onatirec, the linear actuator in the center moves the pinion gears. The utility of this mechanism is the magnification of the stroke. For every inch the linear actuator moves the pinion gears, the load borne by the yellow component moves 2 inches. I am concerned about how much energy will be...
  15. m.ahsaniftikhar

    Rack and pinion lift

    Hello all, I am trying to design a telescopic elevating platform based on a rack and pinion configuration. The design is based on this video from youtube (click the link here). The video shows this in a horizontal configuration. I want to use this mechanism to build a vertical lift. For that...

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