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Functional Paper V8 Engine
glitch0 writes "This V8 Engine made entirely out of paper with the exception of a few parts (motor, wires, etc.), is fully functional. It features many moving parts which include "a compound crankshaft, a rapid cooling fan, 8 rods, 8 pistons and a complex compound gearbox etc." The engine is powered by 2×1.5V D Batteries and weighs 2.98kg. From start to finish this model took one year to design and construct. There is even a D.I.Y. kit in the works that will be released shortly at the price of $85 USD. What comes next...a fully functional car made out of paper?"
It doesn't seem as impressive to brag about a "V8 Engine made entirely out of paper, with the exception of a few parts (motor, wires, etc.)" - that's kinda like saying, "Sushi made entirely out of rice paper, with the execption of a few parts (fish, eel, etc.)"
But it IS a cool looking model!
Not necessarily. Even in your average gas engine, the ratio of air to fuel is 14:1. Air makes up the majority of the intake charge. There would not be enough liquid fuel present to leak out. However, I doubt that a paper model engine could be built strong enough to contain the compression required to create downforce on the piston once the charge is ignited. Much less contain the explosion itself.
Wow. What a worthless reply this was.
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Exactly.
If you want to see really functional model V-8 engines that are not made from paper, check out these guys...
http://www.baemclub.com/pages/photos2.html
Awesome craftmanship.
"Eve of Destruction", it's not just for old hippies anymore...
Strictly speaking a motor is a mechanical device that converts electrical energy into mechanical energy. Its converse is the generator which converts mechanical energy into electrical energy.
An engine is a mechanical device that manipulates a thermodynamic variable (temperature, volume, pressure, or density) to result in an output of mechanical energy via a thermodynamic process. Hence, Brayton cycle engine, Rankine cycle engine, Otto cycle engine, etc.
The efficiency of a motor is expected to be above 90%. The efficiency of an engine is expected to be below 40% (except some really exceptional Brayton cycle engines or some really extreme circumstances).
Suddenly, the hairy finger of a familiar monkey tapped me on the shoulder. It was time.--G. T.
This guy should talk to CraftROBO.
Especially his Notre Dame is cool, the parthenon too but no friezes!
Would be nice if someone provided info on techniques so people could build anything they like, perhaps with some software.
The engine is interesting but why? (and humidity) was on my mind.
Also there in fact are 3d printers (like those using LOM method I think) that make a model by laminating many sheets of paper together. Seems to be a superior way to build an actual paper engine, since the blocks you get are actually quite hard, though you can peel sheets off if you really try.
The Paper Clock always fascinated me. I stumbled across this in an Edmund's store in Toronto several years ago, and built it; it's a large project, 160 pieces, but it actually is constructed entirely out of paper (included in the book) and a couple of paper clips (and some rocks for weight in the weights).
It has a pendulum, gears, two hands, and can wind up and keep time! The design is ingenious, and apparently comes from an old book the other found in a book store (of german origin, I believe).
Fryer's Kits also had a more simplified paper clock, with just a single dial that rotates with the time; I won't link to them, since their site redirects to a non-existant domain now. Does anybody know where I can find this plan now that Fryer's seems to be defunct??? (They also had a free plan for a paper trebuchet that could launch a grape 30 feet.)
Paper construction of kinetic models fascinates me; it's such an elegant demonstration of construction ingenuity. I would love to see other examples that people might post (other than simple dancing animals and such, which seem to be mostly what one finds when searching the 'net for moving paper models).
Love many, trust a few, do harm to none.
A friend of mine from Poland said that he saw someone tear their Trabant to pieces in a fit of rage. It helped that the car was beginning to rot.
the good ground has been paved over by suicidal maniacs
Once while crossing the Polish-German border, we were stopped for customs. It was just after rain and the road was made from cobbled stone. So very slippery.
Inadvertantly, a Trabant slammed into the back of my family's Lada.
Our Lada had a very shallow, barely noticable 3" dent.
The Trabant was totaled. No, really. The whole front up to and including the windshield were beyond repair.