Prop size was the first thing to decide before designing the frame and there was a slight difference of opinion on what we both wanted run.
NJ loved the fact that you could run 3 inch props in such a small package, the massive power to weight ratio can make the craft perform much like a bigger quad and is great fun for ripping around parks and more open flying spots.
Although Bludz also loves the flight performance this setup offers, he preferred to keep the craft as small as possible by running 2 inch props, making it easier to fly in much tighter locations that a 5 inch would struggle in.
Rather than either of us not getting what we wanted, we developed a design that has 2 motor mounting positions on each arm. The inner mounts are for running up to 2.5 inch props while providing a good amount of motor protection. The outer mounting holes are used for running up to 3 inch props and still provide an adequate amount of motor protection.
After a bunch of testing we found that the gains in rigidity and flight performance of a 2.5mm thick carbon frame over 2mm far outweighed the drawback of additional weight (+25%), and the resulting frame weighs just 7.5g.
The all in one whoop style boards come in a few different forms, so we designed our TPU camera mounts to work with all of them. There are cutouts for boards that run sockets and plugs for the motors, and we have retained access to the usb port on the boards that mount them vertically (such as the CrazeyBee boards).
For the initial release of the Guitarpick we are offering TPU mounts for nano and micro sized fpv camera, and in the future we will offer more options as new products are released for this class.
The included TPU camera mounts are designed to work with all the flight controllers market and leaves some space to fit a receiver. They are more about function over form, although they still look cool we wanted to design some camera mounts that are designed specifically for our own component choice and favourite way to build.
Both NJ and Bludz prefer to use the flight controllers that don't have any plugs or a usb port sticking out the top, so this meant we didn't have to worry about these and could create a more aerodynamic camera mount.
NJ likes to use a diamond vtx that adds a board to the stack, he then secures his receiver between the flight controller and camera. So we came up with a design that raises the camera up enough to fit the receiver, while allowing full movement of the camera angle. We also added an angled dipole antenna mount for better video reception.
Bludz prefers to use a TBS Unify Nano VTX and Nano Crossfire receiver that both fit perfectly under the flight controller. This allowed us to place the camera as low as possible and make a smaller camera mount. We added a dipole antenna mount to the outside of the mount that allows you to easily run the antenna up from under the flight controller.
For both analogue and DJI setups we recommend using the BetaFPV 20amp V3 AiO flight controller. We have tested so many boards and this BetaFPV one along with the V2 are by far the most reliable.
1404 size motors are perfect for a high power DJI setup, and 1204's are all you need for many analogue setups. With a KV between 4500 and 5000 you can use both 3 and 4 cell batteries and a whole bunch of different props to acheive the performance you require.