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Longtime lurker, first time poster... PSUs

Discussion in 'New users start here - FAQ' started by pittperson, May 26, 2016.

  1. pittperson

    pittperson Member

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    So I've been lurking on the forums off and on for about a year, and I've finally decided to pull the trigger and create a 2dof seat shaker. Here is what I have so far...

    - Full thrustmaster setup (TX servo base, Ferrari 599XX Evo wheel, T3PA-Pro pedals, TH8A shifter)
    - GTR Simulator cockpit which I plan to modify
    - The infamous 25:1 motors from pgsaw (in transit)

    Waiting to be purchased
    - (2) 12V12 JRKs
    - Power Supply
    - U joint

    My first questions are regarding power for the motors. I see that server PSUs are common, but I'd rather not have to hack them. What are some other options? Is something like this, a 100-220VAC 12VDC 40A 480W Switching Power Supply for LED Strip Light, a viable option? Does it have enough juice? If it is viable, am I looking at 1 per motor or will 1 be enough for both? I assume 1 would work, but 2 would be a better choice.

    Thanks!
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
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  3. pittperson

    pittperson Member

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    Thank you, good info.
  4. ferslash

    ferslash Active Member

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    you can also buy a old cheap server psu they work grate and price i think is grate
  5. pittperson

    pittperson Member

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    So I ended up buying the HP DPS-600PB power supplies. They are a lot smaller than I expected them to be. I plan to follow the, "How to Modify a Server Power Supply for 12V" tutorial, but would like to know if anyone has some better shots of the soldering. Also, what is the reason for soldering the two connectors together?

    What I would REALLY like is a simple quick connect for both power and ground, something like a female spade connector. Has anyone tried that?
  6. GIB SimRacing

    GIB SimRacing Active Member

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    Hey @pittperson - First up good luck with your project. If you follow the tutorial you mentioned above, you will have no problems getting those power supplies modded.
    The soldering can be a bit tricky on those terminals. I too was thinking that spade terminals would be the way but if you have a closer look at the contacts on the power supplies, they are slightly tapered so a spade terminal would not make the best possible contact (at least that is the case with the power supplies I got).
    You could solder only a short cable onto the PSU and have an in-line connector so you can easily disconnect them from the JRK's if you don't want to or easily can get to the screw terminal on the JRK.
  7. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
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    Yes I use female spade clips rather than soldering the wires to the PSU, it makes pulling the PSUs out of the restricted space in the base of my sim much easier. Works well for me.
  8. GIB SimRacing

    GIB SimRacing Active Member

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    @noorbeast - are the terminals not tapered on your power supply? Or do you have special spade connectors? I tried using some connectors on my PSU's but wasn't happy with the connection...
    But, if you just use spade connectors, that's gotta be the best option.
  9. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
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    I am using standard 6.3mm female spade connectors. I bench tested the connection before I installed them and they fit well after I flattened the slight kink on the PSU tabs with needle nose plier. I also use needle nose pliers to put them on and off in the limited confines of the base of my sim, where the 3 PSUs are located.
    • Like Like x 1
  10. GIB SimRacing

    GIB SimRacing Active Member

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    I must have had different connectors then. Thanks for clearing that up mate.:thumbs
    So, @pittperson there are obviously spade terminals that will work nicely with those PSU's. Just make sure you get a good solid connection.
    Sorry for maybe leading you on a wrong path with my previous post.
  11. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
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    You are correct to point out that there needs to be really good contact @GIB SimRacing and it really needs to be checked on the bench that you have that before the final install.

    Mine have been trouble free since I swapped from soldered to spade terminals when I installed my brand new PSUs, but I would suggest that a visual check and wiggle check on a regular basis is a good idea.
  12. pittperson

    pittperson Member

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    My connectors are kinked a bit, good idea to straighten it out. I'll put that on my check list. @noorbeast, are you using insulated or non-insulated connectors?
  13. pittperson

    pittperson Member

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    @Nick Moxley, can you explain how you did your connections here? They look amazing and clean! A close up would be great. The one thing I question is the outside connections on the +12V side, I assume they are live?

    [​IMG]
  14. Nick Moxley

    Nick Moxley Well-Known Member

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, JRK
    The actual Pin jumping i did with pure solder, the PSON and the Ground that needs to be connected are the small red and black cable which goes up to my Kill switch which is actually where the Connection is made (I have a kill switch with individual "blocks" that make the connection for Each PSU)

    The blades are live as soon as your ground the PSON pin yes, Part in why i added the heat shrink over them, but in reality its a little overkill as it would be pretty hard for something to fall in that perfect spot to make any connections....but being safe wont hurt anything.
  15. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
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    Insulated connectors.