I actually built this a little while back but never made a build thread about it.  

Here are the parts used:
Frame - GEPRC Phantom 2.5" Micro Frame - 13.7g
Motors - BETAFPV 1204 5000KV Brushless Motor - 5.9g ea
Props - HQ Prop T3x2.5x3 Durable Tri-Blade 3" Prop - 1.35g ea
FC - iFlight SucceX Micro F4 V2.1 16x16 Stack/Combo (F4 FC, 15A 4in1 ESC, 25-200mW VTX) w/Plugs - 7.7g
RX - FrSky R-XSR 2.4GHz Micro Receiver - 1.5g
VTX Antenna - Lumenier Micro AXII 5.8GHz U.FL (RHCP) - 2g
Camera - RunCam Split 4 Whoop 14x14 FPV / 4K HD Camera/DVR - 10.2g
Prop Guards - HSKRC 3 Inch / 3.1 Inch Propeller Guard - 3.8g set

Weight W/O Battery - 67.9g
With the board cover, foam blocks ect, I would probably add a couple few grams to that.

The Phantom frame has mounts for both a stack and a whoop size board. That gave me the idea to add the Runcam Split 4 underneath and protect it with a cover. The board is actually recessed about 1/2 inch from the prop guards so I'm hoping it will be rather unlikely that it will take a hit. I used the top from a BetaFPV parts box for the cover.

During the first flights I noticed a massive amount of jello. I guessed it was coming from the prop guards not connected to each other and vibrating. Thats when I came up with the idea of cutting foam blocks and inserting them in between the prop guards. I put a layer of hot glue across the foam blocks and ducts to hold them in place and add a little rigidity. Night and day difference on the next flights. I still get a little jello now and then but think it might be from lack of tuning. I am using the tune that came with the stack as I have no idea on how to tune a quad...

The prop guards seem rather brittle so I have been very careful flying it as not to crash as I think crashing it will snap a guard quite easily. It was made for cinematic flying so I haven't taken any chances with it yet and knock on wood, have not had a crash yet. I only land on smooth surfaces which is why it still looks so clean after quite a few flights...










I will try to get some flight footage posted soon...

I love the foam blocks and the cover- creative, perfect solutions.

One of these days I’m gonna have to finally build a pusher.

Hi Brett,

Very Good Looking.   GOOD JOB       

In my opinion, this is the best and quickest method to make a GEPRC Phantom
a 3 inch quad. SWEET. 

nice pusher :-)

if you didnt try already, give it a try with bottom mounted battery for best center of gravity around the propsurface, for best flightperformance, benefical about physics and tuning.