9m 7sLength
120 HP Rumely steam tractor power test on Prony Brake. This tractor can produce over 3,000 ft-lbs of torque between 0 and 250 RPM. Filmed at the Western Minnesota Steam Thresher's Reunion steam show in Rollag, MN USA on 9/1/2007. For more info on this show, go to rollag.com. (more) (less)
Comments
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Chain your 300 hp sports car to the back of one these steam engines. When your clutch goes white hot and disintegrates you will have a practical demonstration of torque and draw bar hp.
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Não mostrou nada de nada!
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9 minutes of video and no dyno run. Just a long winded belt setup connecting the engine to a supposed dyno. It's disappointing...
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With 25,000 pounds of pulling force, that's more than enough to stop a jet fighter at full afterburner.
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Hp= torque x rev divided by 5252
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Chad, I welcome you and your weedeater engine on steroids to hook-up with one of these old steamers. Don't go crying when it drags your ass sideways across the dirt or pavement. You know nothing about torque. Torque is what moves things.
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my honda motor with a 1.8L using gearing can produce more tq at any output speed than this can.....why you ask? cause i produve well over 350hp with it....!!!!!!! its called math you idiots
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I want to shoot myself after reading all these comments
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I'd like to see a peerless z3 on a dyno.
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they are always interrelated. The reason the HP is so low in a tractor is because engine RPM is so low. The 10hp will produce 1000 ft-lbs at 500 rpm where as a sports car will produce 300 ft-lbs at 6800 rpm. HP and torque are mathematically linked so they have everything to do with each other. You can think of horsepower as the rate at which you can put torque to the road where as torque is just raw force.
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Also please tell us why this steam engine got 120hp wich is quite useless cause you wont drive any fast like 100mph in this machine anyway.
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Who wants torque anyway, it is slow and wont make the quartermile in a day at least. Probably why car manufacturers decided to go hp instead of slow junk steam contraptions.
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you have to realize that torque and horsepower have nothing to do with each other in steam engines. That's why in a tug of war between a 400hp sports car and a 10hp steam engine, the steam engine always wins.
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im asking, at what rpm does this thing not produce peak tq... it cant be all the revs for it has to drop off at some point.
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so the tq curve wouldnt "curve" off to zero after 250rpms?
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give it the right amount of demultiplication and it will .. heck even a 1 hp motor with the right gearing could pull it ...
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Steam Traction Engines produce the same amount of torque at one rpm as they do at 200 rpm.
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you are wrong. " An engine with 200 HP and 300 FT/LBS and another with 300 HP and 300 FT/ LBS can do the same amount of work, only the one with 300 HP will get up to the max torque quicker then the 200 HP one" hp is the energy. the engine with more power (assuming similair tq curvs) will always do more work. tq is not a unit of energy and thus CANT me how MUCH work can be done. hp determines work, not tq. always aim for hp output, always.
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The Tesla Roadster has a motor that fits that description.