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Tractor Talk Discussion Forum

Re: Totally Unfair Tractor Pull

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LOU from Wi.

08-20-2013 22:17:22

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I watched the video and read the comments.Most people don't realize the power steam generates,to solve most questions all one would have to do is Google steam catapults on aircraft carriers.Enough to push a 45,000# aircraft in 2 seconds to 226 MPH hope I got the figures right,if not its close. Steam power is damn near unlimited.Old steam engines that pulled rail cars loaded gives a slight idea of power required to move that many cars loaded starting at dead weight in the rail yard. Todays tractor have one convenience, can start up on a cold day and go to work in a few minutes, steam takes a while to build up enough pressure to start working,plus have to keep fueling it almost all day. Always amazed by steam power. Great to watch,thanks for the video.

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08-20-2013 23:00:40

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 Re: Totally Unfair Tractor Pull in reply to LOU from Wi., 08-20-2013 22:17:22  

Unlike the internal combustion engine, a reciprocating steam engine produces maximum torque at stall.

For this reason, it required a skilled engineer to start a heavy freight with a steam locomotive as it was difficult to avoid wheel slip.

Sure miss the steam locomotives.


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08-20-2013 22:40:21

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 Re: Totally Unfair Tractor Pull in reply to LOU from Wi., 08-20-2013 22:17:22  
Having spent a couple of years on a conventional (ie-oil fired boilers making steam) aircraft carrier, I can attest to the power of stream. Both of the ships I served on used dry steam at 1200 psi and around 975 degrees to power them. The Pratt (DDG-44) had 4 boilers and two main engines, and the America (CV-66) Had 8 boilers and 4 main engines.

Think about a vessel weighing in around 84,000 long tons or somewhere around 188,160,000 (188 million, one hundred and sixty thousand) pounds traveling right at 40 MPH. That's the fastest I can remember ever going on the America and at the time I was standing throttle watch in the #4 main machinery room. Our boilers were doing all they could, and the main engines were in overdrive, so to speak. Basically we were injecting full pressure 1200 psi main steam into the middle of the turbine instead of letting it go all the way through like it normaly did. Talk about something to see, the rooster tail thrown up by the old girl running that fast was impressive on a HUGE scale, to say the least.

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