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How to know the torque of that motors?? PLEASE HELP

Discussion in 'Motor actuators and drivers' started by Manes, Feb 13, 2021.

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  1. Manes

    Manes Member Gold Contributor

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    hi guys, I get that motros for a low price. Now i need to calculate the chasis. For that i need to nkow the torque and rpm of the motors. Withe this information, someone can helpr to me, please?? They have encoder also. Is a good option to build a 2 dof?

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    Manes, Feb 13, 2021
    #1
  2. Zed

    Zed VR Simming w/Reverb Gold Contributor

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    My Motion Simulator:
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    There’s practical ways like with weight and an output arm, but there’s probably more sophisticated ways that might or might not be easier. Some web searches would probably give you some thoughts.

    Or, sort which part numbers you have and check manufacturers literature to see if you can just look it up.

    https://www.rossi.com/sites/default/files/Catalog_AS_Edition_April_2008_USA_issue.pdf

    That’s the US catalog but might have your motors and gear heads in it. Your photos don’t show the motor data plate well enough to get the numbers off it, but you may have all you need to just look it up.
    Zed, Feb 13, 2021
    #2
  3. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    My Motion Simulator:
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    you need a balance weight and a lever attached to your motor shaft
    you'll let the motor arm stall against the balance and see what you got
    watch out the motor temperature as stalling is not healthy for it...

    or use a torquemeter :p
    RacingMat, Feb 13, 2021
    #3
  4. Gadget999

    Gadget999 Well-Known Member

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    they look like 450 watts

    what is the ratio of the gearbox ?
    Gadget999, Feb 13, 2021
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  5. Manes

    Manes Member Gold Contributor

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    [QUOTE = "Gadget999, publicación: 213399, miembro: 20168"] parecen 450 vatios

    ¿Cuál es la relación de la caja de cambios? [/ QUOTE]
    I dont know. I am searching the information but its dificult. Too much posibilities in the Rossi motorreductori
    Manes, Feb 13, 2021
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  6. Manes

    Manes Member Gold Contributor

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    Manes, Feb 13, 2021
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  7. Gadget999

    Gadget999 Well-Known Member

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    count the number of turns of the motor to one turn of the gearbox
    Gadget999, Feb 13, 2021
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  8. Manes

    Manes Member Gold Contributor

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    [QUOTE = "Gadget999, publicación: 213409, miembro: 20168"] cuente el número de vueltas del motor a una vuelta de la caja de cambios [/ QUOTE]
    How can i do It? :D
    Manes, Feb 13, 2021
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  9. Manes

    Manes Member Gold Contributor

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    Finaly today I contact with the builder and the motor has nominal 62 Nm, 100 Nm Max.
    El motorremotorreductor works at 30 rpm. It is very very slowly??
    This week I am working out if my house and i dont have the pc to work with the sim calculator
    • Like Like x 1
    Manes, Feb 15, 2021
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  10. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
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    Depends a bit on the motor max RPMs, but even so a longer lever will increase the linear speed, at the cost of some torque, you can mess around with those parameters in SimCalc.
    noorbeast, Feb 15, 2021
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  11. Gadget999

    Gadget999 Well-Known Member

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    are they 24v ?
    Gadget999, Feb 15, 2021
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  12. Manes

    Manes Member Gold Contributor

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    [QUOTE = "Gadget999, publicación: 213496, miembro: 20168"] ¿son 24v? [/ CITA]
    Yes, 24 v
    Manes, Feb 16, 2021
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  13. Manes

    Manes Member Gold Contributor

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    [QUOTE = "noorbeast, publicación: 213492, miembro: 10786"] Depende un poco de las RPM máximas del motor, pero aun así una palanca más larga aumentará la velocidad lineal, a costa de un poco de torque, puede jugar con esos parámetros en SimCalc. [/ QUOTE]
    I cheked with a rpm counter and the motor has in the axis 30 rpm. This week I Will do the calculate with the sim calculator
    Manes, Feb 16, 2021
    #13
  14. Gadget999

    Gadget999 Well-Known Member

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    do you already have them - if so just go with them and see how you get on

    on the back of the motor is it a brake or a speed sensor ?
    Last edited: Feb 16, 2021
    Gadget999, Feb 16, 2021
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  15. Manes

    Manes Member Gold Contributor

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    [QUOTE = "Gadget999, post: 213510, member: 20168"] ¿ya los tienes? Si es así, ve con ellos y mira cómo te va

    en la parte trasera del motor, ¿es un freno o un sensor de velocidad? [/ QUOTE]
    It is an encoder.
    Manes, Feb 16, 2021
    #15
  16. Gadget999

    Gadget999 Well-Known Member

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    ok - you may be able to use the encoder to get accurate positioning

    how many pulses per revolution ?
    Gadget999, Feb 16, 2021
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  17. Manes

    Manes Member Gold Contributor

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    I dont know. I need check on datasheet. Maybe i can to connect to Arduino??
    Manes, Feb 16, 2021
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  18. Manes

    Manes Member Gold Contributor

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    What drivers can I use to move the motors? What options can I have?
    Manes, Feb 16, 2021
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  19. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    noorbeast, Feb 16, 2021
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  20. Manes

    Manes Member Gold Contributor

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    H guys, i am come back at home. start today with the Sim Calculator. Is a beat difficult to me for the language. I dont understand very good what want to say the text. i make the calculate of the ctc with the lever in 120 mm and 200 mm but i am not sure I do the rigths parameters. I know the torque of the motor is 62 Nm and 30 rpm, I have this results, Are the parameters ok??

    Attached Files:

    Manes, Feb 19, 2021
    #20
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