Never too old to have a happy childhood!
ChuckAllen, TX
"We have met the enemy and he is us." Pogo Possum "We have met the anemone... and he is Russ." Bucky Katt "Prediction is very difficult, especially if it's about the future." Niels Bohr, Nobel laureate in physics
Jock Ellis Cumming, GA US of A Georgia Association of Railroad Passengers
QUOTE: Originally posted by hmftrs Follow up question; Why was the JingPing line in China built with jointed (and even joints) instead of cwr?? This line was built in 1992
-Don (Random stuff, mostly about trains - what else? http://blerfblog.blogspot.com/)
QUOTE: Originally posted by oltmannd But, on the surface of it, I think you can pretty much balance the rotating mass, but the reciprocating side rod, et. al. is the real problem and most of the resultant force would longitudinal and could cause the locomotive to want to "waddle" or yaw more than any vertical "pounding". I guess you could configure a lever driven balancing mass the would move opposite to the driving rod to counter balance the forces, but the complexity would probably exceed the benefit.
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