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Phantom 2 / H3-3D : Hole and Spacer Mod

Discussion in 'Phantom 2 Mods' started by Jaybee, May 15, 2014.

  1. Jaybee

    Dec 24, 2013
    Likes Received:
    Bristol UK
    Here’s how I modded my (first gen) P2 to fit an H3-3D.

    You don’t have to do it this way and there are other walkthroughs about to also use / consider. Like here.

    (A) Marking the hole


    Attach the dampening plate using a couple of screws to get it in the right place. Mark the hole, I used a permanent thin nib marker, like you used to use to write on CD’s (do what?! ; )

    (B) Drilling some holes

    I opted to use a Dremel with a small drill bit to punch through some holes. Rather then the pain of disassembling the guts, I make a battery sized box with an open top to slide in and catch the shrapnel. Also had a hover handy to suck up bits.

    Obviously take it steadfast if you leave the guts in, you can easily hack into your USB port wires with the drill if you’re not careful.

    btw. I used some pliers to carefully pirse out the metal thread at the nose-end.

    It won’t win any product design awards, but it does the job. Make sure you’ve smoothed out all the edges (I used a Dremel sanding bit -which looks like a cartoon rocket tip- to smooth the edges). Also ensure the top axis gimbal servo housing has breathing space. If you cut the hole as pictured it should be fine.

    (C) Spacers

    I was surprised to read that some people didn't use spacers. If you don’t the top axis gimbal servo housing will definitely not have enough play. You should be able to push the completed gimbal up so the dampening balls can absorb at least 1/3 of their height.

    While slightly inelegant, the spacers I used work well. The plastic ones are form some skateboard truck spares. The metal are just some I had lying about. As long as you tighten the bolts nicely, it’s solid as a rock.

    With spacers in situ, none of the original screws will be long enough. Luckily these M3*8 bolts are perfect for the job.

    (D) Interference Board

    Whether it does anything or not (in my experience it does jack all) it’s down to you if you want to fit this. It fits into the inside well. I had to reroute the original longer ribbon wire through the hole shown in order to get it to reach the gimbal port.

    I followed the DJI video for the plug order. Basically the one that goes into the main board goes at the bottom, and the one to the gimbal to the top of the IFB (next to the capacitor).

    (E) Securing Pins

    Throw the clear plastic securing pins in the bin. They are a f**ing ball ache. I made the mistake of fitting one, which was then extremely hard to remove. I had to bend it with a pair of pliers which was seriously awkward.

    Just use some plastic ties (with a single metal wire inside). Very easy to take off, and plenty secure enough.

    Job done. More info about ND filters and other stuff can be found on my posts here:

    New H3-3D Install - Not Level + Flight Test & Notes
    How I balanced the Polar Pro ND Filter [video]

    Best of luck, fly safe friends :cool:
  2. evonbart2

    Jun 20, 2014
    Likes Received:
    Cool mod man. Thanks for the walkthrough. Did the exact same thing on mine. I will tell you, use a box cutter to shave around the opening. If you drill little pilot holes and then cut or start from scratch with the blade, it will save you time and possibly punch a hole through something you didn't intend to if you slip with the drill.

    You could possibly use a hole saw which fits in your drill, but I found the blade did an awesome job and was easy to get accuracy with how much I wanted to slice each pass.

    I like the idea if using zip ties to replace the plastic anti oh-shyt pins on your gimbal. I have the older P2 so the H3-2D had those metal screw ons which always vibrated off and are expensive AF to replace. I have a crap-ton of zip ties, but to get the plastic snap on pins OFF once they are on is a joke. After like 4 tries of really trying to pull on them, I grabbed my wire snips and got on with life. I guess if they were easy off, they wouldn't be worth even using right?

    Zip ties it is...

    Happy flying.