(Topic ID: 315278)

DIY Flipper Fan Cooling Kit using Heat Sinks Direct Mount Fan

By sheahan2

2 years ago

Topic Stats

  • 5 posts
  • 3 Pinsiders participating
  • Latest reply 2 years ago by sheahan2
  • Topic is favorited by 10 Pinsiders


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    #1 2 years ago

    Between a couple different forum topics on this, I wanted to consolidate down what I did to help others out.

    A couple links to start you out.

    Radial Heat Sink with Fan (JST connection) (1/coil) referenced in the links above
    LLPT Double Sided Thermal Tape Strong Adhesive Multiple 1.2 Inches (a couple inches per coil)
    6-12 in JST Cable Connectors (1/coil) or you can get the splitter referenced in the links above
    .093 Mod Molex Connector w/ crimps (1)
    18 AWG red/black wire (8 ft)
    DC/DC 12V to 5V 3A 15W Buck Converter Regulator Step Down (if required)
    Heat Shrink Tubing (As Necessary)
    Solder Seal Wire Connectors size 22-18 or 16-14 (As Necessary)
    Zip ties (As necessary)

    Hand Deburring Tool
    Crimping tool for JST Connectors and Molex Connectors
    Heat gun

    1. Fan Sizing. With the machine off, measure the diameter of the coil you will be putting the cooling kit on. Use this diameter to determine the radial heat sink size closest to the one required for your machine (most fans that I have received have female connectors).
    2. Thermal adhesive. Apply the thermal adhesive to the inside of the radial heat sink overlapping on the outside edge to slightly covering the side of the fan. Keep on the blue protective film until ready to install on the coils.
    3. JST Splitter. Choose the correct JST Splitter for the number of coils you want to cool (Note: some fans switch the male and female connectors). Cut off the single female side and connect it to the 18 AWG red/black wire. Black to black and red to red. Using solder seal wire connectors and heat shrink tubing connect the 8 ft cable (This cable will need to be long enough to get from the lower flippers to the power supply). On the other end crimp the 5V red wire and the ground black wire. This will go into the standard .093 Mod Molex Connector 5V red wire in the middle and black wire in the point end. (See Pinballlife mod power supply linked above for the positions).
    4. If you bought the pinball life mod power supply then just plug directly into that. If you want to tap off of 12V power from somewhere else then you will need to use a 12V to 5V 3A 15W Buck Converter Regulator Step Down.

    Happy Modding!

    PXL_20210325_010123392_2 (resized).jpgPXL_20210325_010123392_2 (resized).jpg
    #2 2 years ago

    Paper/wood is an insulator, why did you leave the wrapper on?

    #3 2 years ago

    Thanks for doing this. The prices for full kits seem outrageous, this brings the price down nicely.

    Do we think these work? How is the noise level?

    #4 2 years ago
    Quoted from Black_Knight:

    Paper/wood is an insulator, why did you leave the wrapper on?

    Agree, but the amount of thermal insulation is also dependent on the thickness of the insulator. Paper isn't thick and so negligibly affected the heat dissipation.

    #5 2 years ago
    Quoted from sscharf:

    Thanks for doing this. The prices for full kits seem outrageous, this brings the price down nicely.
    Do we think these work? How is the noise level?

    Check out my original post for how well these work...
    Noise is not even noticable even with the coin door open!

    Quoted from sheahan2:

    Installed a 12v adjustable speed fan with heatsink to the Left Flipper (number 1), nothing on the right flipper (number 2) and had Ambient temperature as a reference (number 3). After 45 minutes of play I peaked at around 170 deg F on the right flipper and just under 90 deg F on the left flipper.
    I could barely hit the left ramp after 45 minutes. Heatsink fans is a huge improvement! I'm going to be making a set of these for every machine!
    [quoted image]


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