Thingiverse
Pop Pop Engine V2 by NatFaust
by Thingiverse
Last crawled date: 3 years, 1 month ago
https://www.youtube.com/watch?v=RI4tyiCF3iQ
This is a 3D printable Pop Pop Boat engine I designed. This is Version 2.
Pop Pop Boats work using what is basically a steam-powered pulse jet. The engine is filled with water, then the boiler is heated, which eventually flashes the water to steam, creating vacuum, drawing more water in, which repeats the process and gives forward motion.
It is made to be modular and work with any hull you want to put it in. Obviously you will have to do some constructing to get it to fit something, I don't have a hull designed for it yet. I'm still refining my designs, and will come out with more.
DO NOT PRINT THIS IN PLA. IT WILL NOT WORK.
The port tubes are 3/16" OD Copper-Nickel brake line tubing. ANY tube with an OUTSIDE diameter of 3/16" will work, potentially even plastic tubes, but I have only tested the Copper-Nickel tubing and brass thin-wall tubing, of the two I prefer the brake line because it bends without kinking using no tools. You can buy a large spool of 3/16" Copper-Nickel tubing online for quite cheap. I paid $15 for 25 feet (a bit over 7.5 meters) of the stuff, which is more than enough to do all of the engines I ever wanted to make.
The bolt holes are sized for M3 hardware. An equivalent SAE size will be fine. Whatever fits will work.
My designs are printed in Makergeeks PETG, and that filament works fine. A more heat-resistant filament would work even better (Nylon, PC, even HIPS).
I have not installed this engine into a boat, but I have run the engine in a test bowl for one continuous hour, which is a very hard run on a pop pop engine. The engine lasted the full hour, and aside from a small dimple in the top where the engine deformed from the coninuous heat, it is still functional.
This is a 3D printable Pop Pop Boat engine I designed. This is Version 2.
Pop Pop Boats work using what is basically a steam-powered pulse jet. The engine is filled with water, then the boiler is heated, which eventually flashes the water to steam, creating vacuum, drawing more water in, which repeats the process and gives forward motion.
It is made to be modular and work with any hull you want to put it in. Obviously you will have to do some constructing to get it to fit something, I don't have a hull designed for it yet. I'm still refining my designs, and will come out with more.
DO NOT PRINT THIS IN PLA. IT WILL NOT WORK.
The port tubes are 3/16" OD Copper-Nickel brake line tubing. ANY tube with an OUTSIDE diameter of 3/16" will work, potentially even plastic tubes, but I have only tested the Copper-Nickel tubing and brass thin-wall tubing, of the two I prefer the brake line because it bends without kinking using no tools. You can buy a large spool of 3/16" Copper-Nickel tubing online for quite cheap. I paid $15 for 25 feet (a bit over 7.5 meters) of the stuff, which is more than enough to do all of the engines I ever wanted to make.
The bolt holes are sized for M3 hardware. An equivalent SAE size will be fine. Whatever fits will work.
My designs are printed in Makergeeks PETG, and that filament works fine. A more heat-resistant filament would work even better (Nylon, PC, even HIPS).
I have not installed this engine into a boat, but I have run the engine in a test bowl for one continuous hour, which is a very hard run on a pop pop engine. The engine lasted the full hour, and aside from a small dimple in the top where the engine deformed from the coninuous heat, it is still functional.
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