1. Do not share user accounts! Any account that is shared by another person will be blocked and closed. This means: we will close not only the account that is shared, but also the main account of the user who uses another person's account. We have the ability to detect account sharing, so please do not try to cheat the system. This action will take place on 04/18/2023. Read all forum rules.
    Dismiss Notice
  2. For downloading SimTools plugins you need a Download Package. Get it with virtual coins that you receive for forum activity or Buy Download Package - We have a zero Spam tolerance so read our forum rules first.

    Buy Now a Download Plan!
  3. Do not try to cheat our system and do not post an unnecessary amount of useless posts only to earn credits here. We have a zero spam tolerance policy and this will cause a ban of your user account. Otherwise we wish you a pleasant stay here! Read the forum rules
  4. We have a few rules which you need to read and accept before posting anything here! Following these rules will keep the forum clean and your stay pleasant. Do not follow these rules can lead to permanent exclusion from this website: Read the forum rules.
    Are you a company? Read our company rules
Shared accounts will be removed Plugin Downloads Zero spam policy Forum Rules

Kanuk's first foray into the world of motion simulation...

Discussion in 'DIY Motion Simulator Projects' started by kanuk, Jan 27, 2015.

Page 2 of 8
  1. kanuk

    kanuk If it ain't moving, it ain't simulating...

    Joined:
    Jan 24, 2015
    Messages:
    214
    Occupation:
    Eng
    Location:
    Melbourne Australia
    Balance:
    2,380Coins
    Ratings:
    +202 / 1 / -0
    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, JRK
    thank you kindly!
    kanuk, Jan 28, 2015
    #21
  2. kanuk

    kanuk If it ain't moving, it ain't simulating...

    Joined:
    Jan 24, 2015
    Messages:
    214
    Occupation:
    Eng
    Location:
    Melbourne Australia
    Balance:
    2,380Coins
    Ratings:
    +202 / 1 / -0
    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, JRK
    kanuk, Jan 30, 2015
    #22
  3. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
    Messages:
    21,053
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    148,016Coins
    Ratings:
    +10,884 / 54 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    You could go with either number 11 in the chart for 50:1 or 15 for 60:1.
    noorbeast, Jan 30, 2015
    #23
  4. kanuk

    kanuk If it ain't moving, it ain't simulating...

    Joined:
    Jan 24, 2015
    Messages:
    214
    Occupation:
    Eng
    Location:
    Melbourne Australia
    Balance:
    2,380Coins
    Ratings:
    +202 / 1 / -0
    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, JRK
    Great! What is the minimum required speed sir?
    Does a faster speed translate to urgency in its movement? Is there something as too quick?

    :)

    By calculation if the other motor is 160rpm @ 12v with 20nm - 25:1, then 50:1 should be at 80rpm at a theoretical torque increase of a minimum of 50% @ 12v...
    which makes the more powerful motor slower... Is this correct or am I off the mark?

    Regards
    Last edited: Jan 31, 2015
    kanuk, Jan 31, 2015
    #24
  5. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
    Messages:
    21,053
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    148,016Coins
    Ratings:
    +10,884 / 54 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    Ratios do affect speed. That said so too does the Center to Center leaver arm length and ultimately settings.

    Motor/ratio choice is a factor of design requirements, weight to be moved and anticipated outcomes.
    noorbeast, Jan 31, 2015
    #25
  6. kanuk

    kanuk If it ain't moving, it ain't simulating...

    Joined:
    Jan 24, 2015
    Messages:
    214
    Occupation:
    Eng
    Location:
    Melbourne Australia
    Balance:
    2,380Coins
    Ratings:
    +202 / 1 / -0
    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, JRK
    Thank you. And the minimum required motor speed?
    kanuk, Jan 31, 2015
    #26
  7. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
    Messages:
    21,053
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    148,016Coins
    Ratings:
    +10,884 / 54 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    I would not say there is a minimum as such, as the response time for a space sim, a flight sim and race sim are different. However, as a rule of thumb 200-250mm per second loaded is a pretty decent rate.

    Basically the output shaft speed divided by 60 gives you the rate per second. So 30 RPM/60 = 0.5 or half a revolution per second.
    noorbeast, Jan 31, 2015
    #27
  8. kanuk

    kanuk If it ain't moving, it ain't simulating...

    Joined:
    Jan 24, 2015
    Messages:
    214
    Occupation:
    Eng
    Location:
    Melbourne Australia
    Balance:
    2,380Coins
    Ratings:
    +202 / 1 / -0
    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, JRK
    So 5o-60 rpm should be plenty then provided i correctly implement the lever and the length of it!
    Another question, because I am 6'4" and not built on the lighter side of life (I can hear all the FAT jokes coming on! LOL!) I want to raise the height of the chair to a higher state. Is there an immediate negative to this?
    Besides the obvious of course, that raising COG will result in more imbalance but that can only be a good thing right for pivoting? And plus I have very long legs so my foot frame needs to be able to clear the ground in order to avoid the discrepancies that would otherwise occur.....
    kanuk, Feb 1, 2015
    #28
  9. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
    Messages:
    21,053
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    148,016Coins
    Ratings:
    +10,884 / 54 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    noorbeast, Feb 1, 2015
    #29
  10. kanuk

    kanuk If it ain't moving, it ain't simulating...

    Joined:
    Jan 24, 2015
    Messages:
    214
    Occupation:
    Eng
    Location:
    Melbourne Australia
    Balance:
    2,380Coins
    Ratings:
    +202 / 1 / -0
    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, JRK
    And thus it has begun. The PSU's arrived today (3 units, the third being for sway when I've completed the 2DOF to the point of contentment) and the parts for the aluminium base are now being prepared.... I ahve also picked up the Universal Joint of a tail-shaft that belonged to a LAND ROVER Defender and it seems to be in very good condition. I believe that I can hear my own excitement! :)
    Tomorrow is the day for bolts. Yes. Love it when a plan comes together.....

    Am I being encouraged to put photos up of the build?

    Oh yes... Before I forget! Has anyone tried to double up the number of motors for a 2DOF? As in use 4 smaller motors to power the simulator? Or am i completely off the beaten track?

    Regards to all @ xsim
    kanuk, Feb 3, 2015
    #30
  11. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
    Messages:
    21,053
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    148,016Coins
    Ratings:
    +10,884 / 54 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    Please do post lots of photos as your build progresses @kanuk, many of us will follow along and photos are always invaluable for someone who may build a similar sim in the future.

    I can't see the advantage of additional motors, it is just more complexity and things to break. The old racing adage applies, superfluous parts left out cost nothing and cause no service problems.
    noorbeast, Feb 3, 2015
    #31
  12. kanuk

    kanuk If it ain't moving, it ain't simulating...

    Joined:
    Jan 24, 2015
    Messages:
    214
    Occupation:
    Eng
    Location:
    Melbourne Australia
    Balance:
    2,380Coins
    Ratings:
    +202 / 1 / -0
    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, JRK
    Superfluous. Yes. Wise words indeed.... Thank you.

    and yes, I will attempt to document this build as I go along as I will take time with it and build it with care. You know, I am still somewhat unsure of the central pivot point (LOL), more out of induced paranoia that I will get it wrong than its simply a method of measurement that's been tried and tested....

    Today, at some point in the afternoon, I was almost ready to convert the whole design to a dual platform sandwich type and then said no, I will stick to it and work it through! LOL

    Ahh. The fever of wanting one's posterior to move whilst playing one's favourite game...

    :)
    kanuk, Feb 3, 2015
    #32
  13. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
    Messages:
    21,053
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    148,016Coins
    Ratings:
    +10,884 / 54 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    • Like Like x 1
    • Agree Agree x 1
    noorbeast, Feb 3, 2015
    #33
  14. kanuk

    kanuk If it ain't moving, it ain't simulating...

    Joined:
    Jan 24, 2015
    Messages:
    214
    Occupation:
    Eng
    Location:
    Melbourne Australia
    Balance:
    2,380Coins
    Ratings:
    +202 / 1 / -0
    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, JRK
    Alrighty then. I am receiving the first few bits of T6 aluminium frame on Friday and then the build starts!

    Having succumbed to this wonderful bug and doing a lot of extensive reading, I am now curious.... Besides the cost advantages, how is the Arduino MM setup different? Is there an intrinsic difference between the two in response characteristics? Do the JRK's do this better? I like @Pit with the post on doubling up on the MM's thereby multiplying its current handling and I really really like the idea of having a heap of headroom within this build. Please advise...

    Regards to the xsimulator community!
    kanuk, Feb 4, 2015
    #34
  15. kanuk

    kanuk If it ain't moving, it ain't simulating...

    Joined:
    Jan 24, 2015
    Messages:
    214
    Occupation:
    Eng
    Location:
    Melbourne Australia
    Balance:
    2,380Coins
    Ratings:
    +202 / 1 / -0
    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, JRK
    Mine's going to be a little tricky @noorbeast with my seat frame not sitting flat from low point of base mount to low point of foot frame. Unless of course I sit on the edge of my stone kitchen bench.....
    Might have to build a platform to do this. :)
    kanuk, Feb 4, 2015
    #35
  16. Pit

    Pit - - - - - - - - - - - - - - - - Gold Contributor

    Joined:
    Oct 2, 2013
    Messages:
    3,012
    Location:
    Switzerland
    Balance:
    30,439Coins
    Ratings:
    +3,089 / 31 / -0
    My Motion Simulator:
    DC motor, Arduino, 6DOF
    Sure they are different, but Ard/MM are not only for electrical gurus...easy to manage. More wiring is needed ;) .
    Definitely not. Ard/MM's do a great job in real time, Regards, Pit
    Pit, Feb 4, 2015
    #36
  17. kanuk

    kanuk If it ain't moving, it ain't simulating...

    Joined:
    Jan 24, 2015
    Messages:
    214
    Occupation:
    Eng
    Location:
    Melbourne Australia
    Balance:
    2,380Coins
    Ratings:
    +202 / 1 / -0
    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, JRK
    @Pit

    Thank you for the response my dear sir. Well, I may try this route as I really like the headroom in current handling. And with that I may need more of your help good sir....

    Regards
    kanuk, Feb 4, 2015
    #37
  18. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
    Messages:
    21,053
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    148,016Coins
    Ratings:
    +10,884 / 54 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    My rig is the same, Just use a strong box or milk crate or something like that to put the pipe on and then the frame on top of that. The principle is the same.
    noorbeast, Feb 4, 2015
    #38
  19. kanuk

    kanuk If it ain't moving, it ain't simulating...

    Joined:
    Jan 24, 2015
    Messages:
    214
    Occupation:
    Eng
    Location:
    Melbourne Australia
    Balance:
    2,380Coins
    Ratings:
    +202 / 1 / -0
    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, JRK
    Another Q.

    @Pit Is there a particular type of Arduino board to be used or can any of the R3's be applied for our purpose?

    Regards to all!
    Last edited: Feb 5, 2015
    kanuk, Feb 5, 2015
    #39
  20. kanuk

    kanuk If it ain't moving, it ain't simulating...

    Joined:
    Jan 24, 2015
    Messages:
    214
    Occupation:
    Eng
    Location:
    Melbourne Australia
    Balance:
    2,380Coins
    Ratings:
    +202 / 1 / -0
    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, JRK
    Now, I wish to thank all of those who have taken an interest in my journey and helped me along the way. Rarely is there a community so hell bent on helping one another and the vigour shown in that aspect with this forum is nothing less than a 10! Thank you. From the bottom of my heart.

    Well, it has started. Motors are ordered (2 sets, a 350W pair and a 200w pair (the 200w from motiondynamics). I have taken delivery of the aluminium required to build the base and now cut it and have arranged it to see what it would look like...

    Here's the pic.

    I will post some more pics soon (working on the build of the base over the next 2 days.....


    base alloy arranged.jpg
    • Like Like x 2
    kanuk, Feb 10, 2015
    #40
Page 2 of 8