Fouride Blog containing recommendations on setups and more details!
Also, spare parts coming...
This frame was designed as a 4” platform but then pulled out to 5” because it would support it nicely. It’s really intended for 4” but it’s quite nice as a very light 5” platform as well. The 5” version is discouraged for beginners because it is not as durable.
The Fouride is intended to be used with analog video or the DJI/Caddx Vista system with the regular full size DJI camera (Nebula, nano and micro size cameras fit as well). It’s a low weight platform which takes advantage of the current and future line of electronics. The layout of the frame consists of two side by side stack platforms that fit both 20x20 and Toothpick/whoop boards with a low 15mm build height. This low build height is intended to keep the weight distribution tight.
In designing the setup around the current and future micro electronics, we discovered an annoying design limitation. The most obvious design layout would be to stack all the electronics. The dilemma there is that either the battery is slung under the frame or hoisted way up in the air above the electronics. Neither of which is preferred for flight performance (racers excluded). The other slightly less obvious option is to spread out the electronics side by side. This allows for a really nice and tight weight distribution and CG, but results in a fuselage that's a bit longer than desired. So we went with 4” arms rather than a 3" because it just makes more sense.
With 4” props, you barely see the tips of the blades in the DJI camera. With 3” props, you don’t see the blades at all. There is a mounting platform for a GoPro on top which is the same platform as the CineGlide and CineSplore as well.
- 4” with 4” arms, 5” with 5” arms
- 4” arms - 61g fully built
- 5” arms - 68g fully built
- Top mount battery
- HD Camera mount same as CineSplore and CineGlide
- 12x12 M2 motor mount pattern
- 4” Motor center to motor center: 141mm wide, 113mm long, 180mm diag
- 5” Motor center to motor center: 177mm wide, 132mm long, 220mm diag
- 1.5mm thick body plates, 3mm thick arms
- Two stack mount platforms for 20x20 or Toothpick mount each
- No stack/arm screw integration
- 15mm build height
- Digital and analog. Made to fit Vista unit with Full size DJI camera or smaller
I've built a second one after crashing the first into a lake. Both were using the 5" arms.
I love how light and short this frame is, but that it still comfortably fits all of the electronics. You can even fit a 1000uf 35V capacitor between the Vista and the AIO if you remove the middle standoff. You can mount two of the vista screws upside down with the nuts on top so that they will perform a similar function as the removed standoff. It's also a good idea to put some plastic M2 nuts on the tip of the center arm screws since they stick up a little from the press nuts, so they won't damage the capacitor.
I've mounted the vista on the front on my previous build and on the back on my latest one. I prefer the AIO on the back so you can route the battery lead through the back of the frame instead of the side. I've made a very short lead with the XT60 barely coming out of the frame, so I didn't even have to retain the battery cable like I do now underneath the battery strap.
I didn't like how the motor wires hanged loose on the side of the vista, but on my latest build I've used a zip tie around the Vista and the bottom plate with the motor wires pressed on the side of the Vista, so now I am much more confident that they won't flap with the wind potentially causing vibrations in the AIO or being chopped by the props. I've also used a second ziptie to secure the motor wires to the bottom plate in the middle of the frame, which I could now do since I removed the middle standoff.
Make sure you purchase the back TPU antenna mount with the frame, and the long 15cm Caddx antenna. I've tried using the short one with the side TPU antenna holder, but got very short range since I was using a big 6S battery that blocked the signal.
I run this on 6S 1100mah. I used to have the 4S 23mm Short FPVCycle motors with a 70% motor output limit on my previous build, and could get a little over 12 min of cruising and about 5 min of very hard flying with long throttle punches on open fields and lakes. It turned out weighing 220g with the FPVCycle motors, plus 200g for the 6S batteries. It performed great.
I started out on a 5", but I found I didn't fly it very often since it was so loud and powerful, I required more space for it. So I moved down to the 3.5" and that was ok, but lacked the throttle response. Then when I tried the 4" Fouride, I fell in love. I can fly this thing in my front yard and in much bigger areas with plenty of throttle response (using 23mm 3450 motors). I loaded up MouseFPV's tune and it flies like butter. This really is perfect for me.
i was gifted this frame in the 4" size and never thought much about it..... had an extra aio and an extra vista so i went for it and put 2203 2800kv fpvcycle motors on it (4s) and man this thing is one of the most powerful and nimble quads i own..... it has become my go to for ripping around at home and even at new parks... this thing rips like nothing else i own.... makes me want to build the power pick 4" i was gited with the fouride..... what an amazing frame/build...
This was my first 4-inch build, wanting something that could be punchy but not cover a lot of ground since i fly mostly in the city. Easy to assemble, this was probably my 8th or 9th build, so not a ton of experience. Holds a 20x20 NBD stack snugly, had to use slightly longer M2s to mount it instead of what was in the kit. A really solid feeling compact build.