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ZYT90-155-12V with gearboxes don't know what to do...

Discussion in 'Motor actuators and drivers' started by WowaDriver, Jul 17, 2015.

  1. WowaDriver

    WowaDriver Waldemar Jost

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    Hi guys,

    actually i'm completly redesign my simulator and will add the third axsis for TL.
    At the moment i use normaly wiper motors with an arduino + H-bridge combo,
    but i will change this, because this combo doesn't configurable in the PWM so much,
    so my motors a still noisy, i mean really noisy...
    Here is an link to an old video of the first test and if you turn up the speakers you
    can hear it, but what i mean are not the mechanical tones of the parts, i mean especially
    the motors!



    But ok, so i decide to buy the ZYT90-155 motors with a pololu jrk combo, because
    many guys here in the forum shown video of their sims and the motors were all very
    quiet as mine.

    These motors are from:
    https://www.motioncontrolproducts.co.uk/products/8/24/zyt90-155-12v-traction-motor-04-nm/

    Their price is very cheap, i find, but for the gearboxes they can give me only the left hand
    version. I think it would be better if i will use one left and one right hand gearbox for
    the seat and the simetrial look, and one right/left, it doesn't matter, for the TL.

    They said to me that the only will have the left hand version in stock for the future...
    So i don't know what to do. To order these motor in australia is to expensive because of
    the utlra high shipping costs. I'm from germany so the company from the UK will be
    the best one.

    Do you have an idea where i can find an alternative seller for these motors and gearboxes?
    Or should i have to use the MCP2 gearbox, becuase at their data sheet i saw, that the axis
    is on both side going out of the gearbox, so i wouldn't have an symetrical problem?

    What should i do? Have you guys any other idea how to use 3 left hand MCP4 gearboxes?
    I'm thinking about to order these 60:1 motor incl. gearbox, but i think this is a bit oversized or?
    I will only have a normal seatmover, think there is an ratio of 25:1 the better way...??
    http://www.ebay.co.uk/itm/12V-DC-Ge...805?pt=LH_DefaultDomain_3&hash=item1a02b18bdd

    Best regards

    Waldemar Jost
    Last edited: Jul 17, 2015
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    • Informative Informative x 1
  3. WowaDriver

    WowaDriver Waldemar Jost

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    Thanks for your fast reply norrbeast,

    i saw the days your pictures and have thniked about that. But there we are at the point, if the gearbox with 60:1 is to oversized for me or not?
    Furthermore i'm thinking to try using my old PSU's they are 12V 30A (360W) ones ... and i think in your topic you or someone wrote to have
    more powerful PSU's for these 60:1 motors right?

    Best regards

    Waldemar
  4. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Unfortunately ideal motor/gearbox combinations are not always cheap or easily available. Yes the Motion Dynamics 25:1 are great for shoulder mount designs, at a good price, if you live in Australia.

    However, the UK motors are similar and you could use a 80-100mm CTC lever on the 60:1 for a linear speed similar to the 25:1, though mechanical loss will be a bit higher: http://www.xsimulator.net/community/faq/calculating-basic-linear-speed-and-forces.89/

    Yes it would be wise to use more powerful PSUs if you are upgrading to the UK motors, so you can take full advantage of the power they have to offer.
  5. WowaDriver

    WowaDriver Waldemar Jost

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    Tanks again for the fast replay...

    so i think about it and read the article you post, so i decicde to buy 25:1 motors... but motioncontrolproducts doesn't have these at the moment ? Do you know any other source where i can get these baby's??
  6. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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  7. WowaDriver

    WowaDriver Waldemar Jost

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    Thanks for the link, saw them to on ebay... but think from the quality are the ones from motioncontrol much better or? What du you think, the canadian ones look like plastic motors... :D
  8. bsft

    bsft

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    @Nick Moxley , where did you get your motors from?
  9. WowaDriver

    WowaDriver Waldemar Jost

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    His one were from motiondynamics.com.au ... i would order them there too. The problem is for three motor i have to pay around 300€, this is a good price, but they want more over 250€ for the shiping to germany! Thats in my eye a no realistic price... sorry
  10. Nick Moxley

    Nick Moxley Well-Known Member

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    My Motion Simulator:
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    My motor's came from PGsaw, and he has them back in stock now last i checked.

    Yes They have a plastic main gear, but after a year or so with VERY twitchy setting's for F1 beta testing, They have proven to be just fine.
    • Like Like x 1
  11. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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  12. tombo

    tombo Active Member

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    Hello,
    I'am also from germany and searched very long for this motors. The only seller with acceptable shipping cost will be Motion Control Products.
    I just would buy two left handed and revers the gearbox like shown by noorbeast.
    If you contact the seller he will discount the shipping to 30€ for 2 motors. And delivered in 3 days!
    • Useful Useful x 1
  13. WowaDriver

    WowaDriver Waldemar Jost

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    Thanks for norrbeast, just find them on ebay too. Are there any differences between the canadian motors and the motors from motion control products (mcp)?
    I wrote the last day with the guys from mcp, and they also will give me an advice for the shipping, so it wil be around 30€ incl. VAT. The problem is that they actually
    have only the 60:1 gearbox in stock. So i don't know, if you say the mcp motors are much better in quality i think i would wait for for the 25:1 motors of mcp they have in stock in future.
    But if you say the canadian one is from the same quality, i will order the canadian ones, because actually my university mate is there to visit his parents, so he can
    buy me 3 and bring it for free shipping to germany ... Do you think he can get problems at the airport to have three of these motors?

    I ask about the quality because the canadian ones looks like a chinease copy , without any labels and so one... About the mechanism part i think both are with a
    plastic gear, isn't it?

    Best regards

    Waldemar Jost
  14. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    You would have to explicitly ask to verify the model with MCP but they look to be the same gearboxes. As @Nick Moxley has said the plastic gears in the 25:1 can really take some punishment.

    If there were a problem at an airport I suspect it would most likely be about weight, as 3 of those motors are pretty heavy. But I don't know much about what airports your friend is going through or what applies regarding transporting goods for those. You really would have to check.
    Last edited: Jul 18, 2015
  15. WowaDriver

    WowaDriver Waldemar Jost

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    Thanks norrbeast for your opinion! That's axactly the point i forgot... these babys are really heavy ... what i meant before is problems with the duty, but i think if there will be any problems
    he can say they are for private use, like they are! The only one difference i have noticed is that the MCP motors are 155 mm long like their name it says, and the canadian ones are littel shorter...
    The gearbox looks like you sad all the same! Think the gearbox from MCP is also with an plastic gears... but that is mayby much better because they shouln't be so loud like the metal ones...
    But wrote an email to MCP to check about the materials...

    Best regards

    Waldemar Jost
  16. WowaDriver

    WowaDriver Waldemar Jost

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    My Motion Simulator:
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    So me again, read actually the thread from a forum mate who was asking about the min rpm for those motors:
    (Don't forget i build a seat mover, so a shoulder version, not an platform... or how it calls ...)

    So in my case i decide for these two options:

    1. The first one is to buy the canadian motor (180W) with plastic gear and a ratio of 25:1 with an 150 rpm shaft speed.
    So i will get a lever velocity of 162.5 mm/s for the recommended 65mm c/c lever length by 80°/90° (linear 85/95mm)
    i read in an other topic.

    2. The second one is to buy the uk one of motion control products (280W) with metal gear and a ratio of 60:1 with an 80 rpm shaft speed.
    So i will get a lever velocity of 86.6 mm/s for the recommended 65mm c/c lever length by 80°/90° (linear 85/95mm)
    i read in an other topic.

    (if i calculated right ... :D...) I won't get the velocities which are listed in the F.A.Q. and the guys told about in the other topic...
    In my case that are much less then the 200-700 mm/s which the guys told SCN killer... Or did i make an mistake while calculating...?

    For me it is recommended to have motor which can work like the scn's it do... like one of our forum hero's it wrote: The min speed is around 200mm/s because than the motor can handle the effect on over 200 km/h in game exactly!


    Another topic i'm interested is the lever angle of 80°/90° and the hall effect pots with 180° movement:


    Nick Moxley said in an other topic: "Guys like myself and robbie who are using the 40 UP and 40 Down, Are using 180 deg hall effect's, NOT 360!"

    So i read some articles about correct pot mount and the angle the lever have to move. I'm with you that i only need a lever movement round about 80° (linear move = 85mm) till 90° (linear move = 95mm) of the possible 180° movement and the feedback angle of an hall effect pot with 180°.

    So the hall pot are much better and have a higher resolution than the normal ones i use before, but when i build my first sim i was reading an article about to use the full range of an pot angle for a higher resolution to use the full 12 bit of the jrk's ... Now my question, should i use a geared method to turn the pot full to his 180° angle with the 90° movement of the motor axis, or are hall effect pot so good and the 90° i use of the 180° will be enough for a good 12 bit digital resolution?

    Best regards

    Waldemar Jost
  17. telfel

    telfel Active Member

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    Hi
    You can also get the hall effect pots that electrically work over 90 degree
    i have some that i wont be using, let me know if you interested.

    regards Terry
  18. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    The Angular to Linear Velocity formula is :
    v = r × ω
    Where:
    v: Linear velocity, in m/s
    r: Radius, in mm
    ω: Angular velocity, in rad/s


    1.
    Radius = 65mm
    RPM = 150
    Linear Velocity = 1.02102 m/s

    2.
    Radius = 65mm
    RPM = 80
    Linear Velocity = 0.544544 m/s

    Allow between 10% to 50% loss for worm gears and the greater the gear ratio the higher the % loss is: http://www.meadinfo.org/2008/11/gear-efficiency-spur-helical-bevel-worm.html

    However, presuming the same frame design what CTC chosen would not be identical for both motors.
  19. WowaDriver

    WowaDriver Waldemar Jost

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    Damn!! Yes your absolutly right! I forgot that
    w=2*Pi*n ... That was my fault.

    So what do you think will be the best solution for my sim and which frame design would you propose for each motor?
  20. bsft

    bsft

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    @WowaDriver , @eaorobbies calculated linear speed is more like 500mm per second using 65mm CTC and 80-100 deg travel on a 25:1 box motor. A hall effect will not really improve fine motion much as the JRK, which he uses, Not an Arduino or MM, has the processing power in it to get very fine vibration and snappy motion. Although fellas use them. Maybe I am the only one that doesnt really like the way they function, up to you of course.
    Sometimes calculation can work, but there is a nifty thing in the JRK utility of a live graph, that you can see actually how fast it goes from bottom to top and you can see exactly how fast it moves.
    I only use JRKS and use this as well to fine tune my rides.
    That and JRKS can be set to really speed up a motor very easily. No coding, just simple PID and motor adjustments
    Rob and Nick use a small range with a long lever to get that fine snappy motion.
    Dave