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I have some long wheelbase wagons (8x32) with four wheels, which turn on the
curves. Here’s a new pic of how it’s done:
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=1150118
This is the wagon the right way up:
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=1103713
On the lower wagon in the underside picture, which goes last in the train, the
link moves across the wagon as the wheels turn. The grey boat studs stop the
link binding on the baseplate.
On the upper wagon, elastic bands pull the wheels and couplings back to the
straight position. The lower wagon had its bands removed as the adjacent wagon
coupling is enough to pull its wheels sufficiently straight for the train to
reverse down a siding successfully. The action of the elastic bands makes the
wheels on adjacent wagons act like a flexible shared bogie.
I have modified the tanker kits to use a similar elastic band straightening
mechanism. It can be used on all wagons that use 6x24 train bases, though
performance is reduced if the wagon is either heavy. These tube wagons and the
tanker kits are light and I think the hopper kits would work OK with this
technique. My heavy sculpted cement wagons might struggle though:
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=90778 as do much longer wagons
such as these Lowmacs: http://www.brickshelf.com/cgi-bin/gallery.cgi?i=742632
Since the tube wagons always run as a pair, I used the liftarms instead of
magnetic couplings - it also leaves more couplings for other new wagons!
Let me know if you find this technique useful!
Mark
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