Triple pipe CO2 capsule boiler pop pop boat P1

Triple pipe CO2 capsule boiler pop pop boat P1
Triple pipe CO2 capsule boiler pop pop boat P2    • Triple pipe CO2 capsule boiler pop pop boa...  
Video inspired by one of the boilers on Magnus Ericsson's pop pop boats

Magnus Ericsson
Build a hull for a pop pop boat, or any kind of small model boat
   • Build a hull for a pop pop boat, or any ki...  
How to make a pop-pop or put-put boatmotor with silicone, no welding    • How to make a pop-pop or put-put boatmotor...  

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Usual Components
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Brass & Aluminium tube
Silicon tube
Empty CO2 capsule
Solid Fuel from camping stove
Candle or tea light probably won't be hot enough
Styrofoam
Solder
Soldering iron

Pop Pop boats playlist    • Pop Pop boats  
Toy Boats playlist    • Model boats  
Daryl Foster devotes his channel to Putt Putt boats and here is the first one on his channel also back in 2009    • Part 1 Canadian Putt Putt Boats Water Bug YT  
Daryl Foster's last pop pop boat video    • Putt putt Fleet of Pop Pop boats  
Here is the link to DaveHax tutorial which I found excellent    • How to Make a Simple Pop Pop Boat  
sciencetoymaker has a full step by step tutorial series on putt putt (pop pop) boats starting in January 2009 with episode 1 here    • Part 1 Build a Putt Putt/Pop Pop Steam Boa...  
Here is a good video on tweaking the speed of these boats    • Part 25 Build a Putt Putt/Pop Pop Steam Bo...  
This link that explains the general annealing process without getting too technical http://steamshed.com/annealing%20proc... and here is a YouTube video on the subject by George Goehl    • Copper Annealing  

Some history on Pop Pop boats you look at this Wikipedia link on the subject http://en.wikipedia.org/wiki/Pop_pop_... they have been around since at least 1891 when a patent was filed by a Frenchman named Thomas Piot.

HOW DOES IT WORK?
Water in the boiler is turned to steam. The steam has a greater volume than the water so it pushes out of the boiler and down the tube. In the tube it cools, condenses and contracts so it is drawn back into the boiler and the process repeats. The action of the steam pushing into the tube pushes the existing water in the tube out the back and that drives the boat forwards. When the steam cools it condenses and contracts so the external pressure pushes the water back up the tube.
If your next question is "why doesn't the boat oscillate backwards and forwards due to this push-pull effect?" try blowing a candle out and then try sucking a candle out and you will see the blow is fairly directional but the suck is not.

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