Hmm, I think one that needs to be mentioned is the banking issues on woodies.
Myth: Woodies cannot have overbanks or 90 degree banking as it is not realistic..blah blah blah..
Fact: False! Hades has pretty given everyone who ever said that a big slap in the face;
http://rcdb.com/ig2667.htm?picture=53
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Myth: Brakes cannot be on curved track.
Fact: Yes, brakes can be on curved track segments. But as Real said above about the curved chain lift, just don't go slapping brakes in on turns and think they will all magically work.
Pictures to prove it;
http://www.pointbuzz.com/Gallery.aspx?i=426
http://www.pointbuzz.com/Gallery.aspx?i=425
^ Curved brakes on Magnum XL 200's turn around.
umm..yeah I swear I had more pictures of that myth but I can't seem to find any, hah.
And here are some more pictures of curved stations;
Shooting Star
Wirbelwind
Windstorm
StarLiner
and one for the curved lift hill one;
http://rcdb.com/ig1589.htm?picture=12 haha..
And for that curved chain lift thing..I'm not sure how it works, but if you have ever worked on any bikes you will know that chains can actually bend quite a bit before breaking. I'm guessing that on those big chains on that coaster with the curved chain, the holes where the pins go through to connect each link are bigger than the actual diameter of the pins to allow them to move..With that big of a curve on the lift hill you wouldn't need it to bend too much to achieve the curve needed.