I liked my last 4" so much that I built another. Now with a more refined frame and canopy. It's 4.6 grams heavier but much sturdier in the mid section.

I don't have a radar gun but this feels as fast as my 5" with 2207s. Burst doesn't last as long obviously but it's as nimble as a 3".

Components are the same as last time except now I'm using the Diamond VTX for that sweet DVR.

I'll upload video later. It started snowing as soon as I went to fly it!

Update: I was getting some nice video of a snowy landscape yesterday... I clipped a snow drift and got snow on the cam but could still see so I kept flying. A minute later the quad lost power as I was nearing the shore and it took a tumble into the lake! :(

Update #2: I fished it out of the lake after a couple days, put it on the dehumidifier for 16 hours and dried it out. It still works! Well mostly. OSD is displaying 3cell voltage instead of 4. It's got some rust in it. Heard a spark a couple times when I plugged it in. I'm kinda sketched out about flying FPV until I open it up and check everything. Wires can rust and get brittle. Anyway video soon. Holidays are keeping me busy.

Update #3: I had to replace the FC. Video added.

Update #4: It's been 4 months and it still flies great, even with a little rust in the motors. I'm using jazzmaverick rpm filtering 48k and have gotten a few 12 minute flights. It's definitely faster than my (old and heavy) 5 inch, though cruising speed is lower. I'll be trying some new props soon and ditching the crappymodel vtx in place of a new one.