Only its a Triple expansion.

+Rob Mannion We are so used to the rain here we don't notice it half the time.

Australians have always appreciated engineering.

We are well used to the English Summers.

And then hours of hard work to clean the boiler and engine

Pip Piperade poop poop

94 ft.lb of torque @ 360 rpm. In comparison, your boy-racer Nissan Micra with its 1.4 litre 99BHP engine can barely manage 90 ft.lb @ 6000 rpm. If you look at my video called "Triple Expansion Steam Engine running with a brake under Load" you will see the brake test for this engine.

maltelec But I drive a Dodge Challenger SRT8 with a 6.4-liter HEMI V8 with 470 horsepower and 470 lb-ft of torque:)

SnyderColorcast In order to get 470HP with 470ft.lb torque the engine needs to rev at 5300 rpm. Knowing what American engines are like, it will last around 5 minutes doing that. The engine in the boat above should still be running fine in 100+ years time, as has been proven by similar engines which are 100+ years old.

maltelec ส

The boat is called Whippet and it will do about 8mph.

It's just like a model of a full-size marine triple. Bravo!

Typically Welsh steam coal

Infernal combustion engines are horrible noisy smelly dirty things. Electric is much better.

maltelec With apologies to S. T. Coledrige; 'Batteries, batteries everywhere And my useful payload shrinks The equivalent energy in Gasoline Is a whole lot lighter, I think.'

Thelastminstrel Actually, steam power is EXternal combustion.

modelleg and Thelastminstrel Thelastminstrel was saying that this coal firing set up is much harder than turning a key on an infernal combustion engine. However everyone forgets that the first petrol cars were as bad if not worse than steam powered versions for breaking down and being generally unreliable. If steam propulsion had as much money thrown at research as petrol and diesel has had, it would be just as good (if not better) then Petrol and Diesel cars are today. The energy value of coal is not much less than gasoline (Petrol). The difference is the boiler adds much weight. This can be changed but like the IC engine, not easy to get right. Fuel Energy Density Coal: 24 MJoules/kg. Gas: 46 MJoules/kg. Uranium: 76,000,000 MJoules/kg *Figures taken from xkcd's Log Scale

The shipping companies moved to IC on a cost basis. Efficiency has little to do with economy, it just sometimes follows the same path. Other times it doesn't.

My dad built the engine. Runs at around 150psi. Depending on who is firing it usually takes an hour to get going.

He was obviously a very talented individual, it's a real work of art-as is your launch. My steamboat is only 2.5 feet long but on the other hand it only takes 5-10 minutes to get steam up! Thanks for the reply!

+Leif Vejby Yes it is a triple expansion.

maltelec Thanks! A bit of overdoing it for a launch, but a wonderful piece of machinery!! Thanks again!

Which means - if I understand this correctly - high pressure cylinder exhaust runs a bigger medium pressure cylinder whose lower pressure exhaust runs the third and largest. Is that more or less it?

That's exactly it

Its a painted yellow wheel and it is for steering

Really? Why bring god into it? Which one though, there are so many however it makes no difference and is irrelevant to this fine video. Humanity will chug along as it always has. Today is tomorrow's yesterday. So Big Angel, enjoy this time on earth for life is but a dream.

Yes it is.

@@maltelec Is that the first Windermere launch with a triple expansion engine?

@@bingola45 No I would imagine Otto would be.

@@maltelec A steel-hulled triple-expansion Windermere launch. They say you learn something new every day...

1 very small bag. Needed only to get it started. After that it used coal. You can start it on sticks and coal but it takes a long time to get going.

Single propellor , three blades , 20 inch diameter and 36 inch pitch . Fuller details given on the Steamboat Association of Great Britain website .

Thank you

Brad Chapman

Peter Speck ?

Single prop , 3xblades , 20" diameter , 36" pitch .

+Thomas Teague www.steamboatassociation.org.uk/page-1117882

thanks. do you have any additional info? In particular I'm looking for the square footage of the heating surface and the boiler horsepower.

+Thomas Teague I don't know the boiler details. The engine is designed to be 15IHP at 150psi.

Ok thank you for your help. I should have proofread my initial comment before sending it. I meant to ask "What kind of boiler is that?"

+Thomas Teague Vertical fire tube. Nothing special. Their is an episode of Scrap Heap Challenge where they are making Steam Cars. The round vertical boiler on that is one of three which were made identical, this boat uses one of the others.

Don't confuse the piston valves for pistons. This engine has three pistons/cylinders, two piston valves and one slide valve.

Yes I should have waited to see more of the video before commenting, three cranks was a give away. However, as the diameters of the cylinder heads are of different diameters I assume it is a triple expansion engine?

@@johnmartin6178 Yes, it is a triple expansion. Known as an Elliott Bay.