Now that's what I'm talk'n about!! Those drive wheels
are 80" in diameter and are massive to say the least.
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Those drive rods are huge and look to be made out of
stainless steel. The bore diameter of the steam engine is 25" and the
stroke is 32". To give you a comparison your modern car engine has a
bore between 3" and 3 1/2" and a bore of about the same. The smaller arm
above the drive rods is called a main rod or connecting rod which
converts the horizontal motion of the piston into a rotational motion of
the driver wheels.
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The fit and finish on these parts were impressive. I can't imagine how
long it took someone to polish all that steel.
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This was quite an interesting looking nut and was one of the only things
small enough that I might be able to actually make because everything
else was way to big.
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This funny looking device is used to lay down sand in front of the drive
wheels to help it gain traction in difficult conditions. That brown
shinny stuff that you see is grease....and lots of it.
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Here you can see the last set of wheels which are the
same size as the front ones. You can also get an idea of how large this
locomotive really is compared to the man standing on that ladder.
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