Hello everyone, I'm designing my very first RC boat, and I was hoping for some experienced feedback. I plan to 3D print this boat on my Prusa Mk3, including the rudder assembly and turn fins, so I can fully customize its performance. The prop shaft has a downward angle of 5 degrees, and it's connected to the motor via a U-joint which takes a 20 degree angle. I'm still not sure why many racing boats have just one rudder offset to the right, so I figured I'd plan for two, but check if it works with just one. The propeller will be 35mm in diameter, on a 4mm shaft.
I've placed the battery in the center so the boat will not be inclined to tip to one side, although I realize this may be an overkill solution to a minor problem. As you can see, the yellow line is 1/3 of the hull length from the transom, which is about where the COM will lie.
The canopy will be held down with four thumb screws, and it will be sealed either with a sqaure-profile O-ring of the right circumference, or I'll just fill the cavity with silicone and let it cure to create a customized rubber-like seal. The canopy has a lip on the underside which will push into the seal when screwed down.
Motor: https://hobbyking.com/en_us/turnigy-...___store=en_us
ESC: https://hobbyking.com/en_us/turnigy-...___store=en_us
Battery: https://hobbyking.com/en_us/turnigy-...___store=en_us
Receiver: https://www.amazon.com/Spektrum-AR41.../dp/B07GS2S7W8
Servo: https://www.amazon.com/Hitec-31055S-.../dp/B0006O3WNW
I may upgrade the battery to a 4S in the future, but I suspect 3S will be plenty powerful for a boat of this size. The ESC is definitely oversized, but it was a good price (and in stock). The motor seemed like a good average size based on similar-sized RTR boats I found online.
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