What was the donkey engine powered by?
steam engine
A logging donkey consists of a steam boiler and steam engine, connected to a winch mounted on a sled called a donkey sled. The donkeys were moved by simply dragging themselves with the winch line, originally hemp rope and later steel cable. They were used to move logs, by attaching lines to the logs and hauling them.
How does a donkey engine work?
A donkey engine was an integrated machine consisting of a powerplant and gearing that turned one or more drums or winches containing wire rope. Designed to lift, drag, and move logs from the stump to an accumulation point, donkey engines were also used to load logs on cars that transported logs to distant mill sites.
How do you make a donkey boiler?
- Build a concrete slab for the donkey boiler. Excavate an area 6 feet long on each side to a depth of 4 inches.
- Install the supports for the barrel.
- Mix the concrete according to the manufacturer’s recommendations.
- Prepare the steel drum.
- Insert a hose into the steel drum and fill it with water.
Why is it called a donkey boiler?
The name “donkey” comes from the fact that these engines replaced horses as a power source for cargo handling. The term was also applied to similar engine and boiler units carried aboard ship.
What is a pony motor?
The pony motor is a small gasoline engine nestled up under the dash. The operator would start this little gas engine and use it to warm the big diesel engine. When the engine was warm enough, the operator started the diesel engine and turned off the gasoline engine.
How efficient is a steam engine?
Steam engines and turbines operate on the Rankine cycle which has a maximum Carnot efficiency of 63% for practical engines, with steam turbine power plants able to achieve efficiency in the mid 40% range.
Why do steam locomotives puff black smoke?
A The color of exhaust you see coming out of a steam locomotive’s smoke stack indicates how efficiently it is burning fuel. Darker or blacker smoke is an indication that small fuel particles (coal, wood, fuel oil, etc.) have made it through the firebox unburned and are therefore wasted.
How does a donkey hot water system work?
The principle of the donkey is that hot water rises (like hot air) and as the fire warms the water, the warmer water will be what comes out of the top pipe. And it does. While firing up the drum full of water & detergent and later draining it, the water temp from the bottom pipe (where the flames were) was almost cold.
Who invented the steam donkey?
John DolbeerSteam donkey / Inventor
What is a pup motor?
What is the most efficient steam engine design?
The steam turbine is the most efficient steam engine and for this reason is universally used for electrical generation. Steam expansion in a turbine is nearly continuous, which makes a turbine comparable to a very large number of expansion stages.