Subject:
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Re: Roller Coaster runs on Monorail Track
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Newsgroups:
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lugnet.technic
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Date:
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Fri, 30 Mar 2007 13:49:16 GMT
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Viewed:
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10443 times
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In lugnet.technic, Jason J Railton wrote:
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In lugnet.technic, Jason J Railton wrote:
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In lugnet.technic, Chris Phillips wrote:
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That is a cool design! Definitely the most compact working design I’ve
seen. I’m surprised that I never noticed this before. I bet you could
eliminate a lot of friction by using a layer of SNOT for the rail bed. I
also used plastic wheels (no rubber) because I don’t mind if the wheels skid
all the way down the hill. All the better if they do!
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It was designed to be modular - each section is 16x16, and drops either 2
bricks (straight) or 4 bricks (corner). I carried it all in flight luggage,
each part wrapped in tight cling-film (plastic food wrap) and I’m amazed the
curves held together. A good Samsonite case helped.
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Samsonite!
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Funny thing was, if I had tiles all along the straights, the cars would drag
against the sides. By having some tiles then dropping onto studs, there’s a
little jolt to keep them going. The same is true of the placement of tiles
on the steps in the corners.
The corners are where you get the most sticking though, and it’s hard to
design a smooth (and shallower) bed through the turns. If the cars pick up
too much speed, they will tip over the next corner as they are quite tight
turns.
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Speed is your friend, and friction is your enemy. If the cars are tipping in
the corners, you could try using thin Technic tubing (the stuff that can clip
into a minifig hand) to build guard rails. I also use that stuff very heavily
for GBC.
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I want this to be very reliable. Our amusement park displays are expected
to run continuously for at least six hours at a time, and I don’t want to
spend the whole weekend picking up after derailments and answering minifig
lawsuits.
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Mine ran 8 hours a day for 6 days at Legoworld, but you did have to watch it
pretty much constantly for cars tipping on the lift or in the corners. I
also needed to completely service the mechanism and the karts every morning -
wheels off to dust the axles, brush the tyres and clear the plastic dust from
the lift gearing.
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Very impressive! The NELUG amusement park area usually has a lot of ABS dust
blowing around by the end of a weekend, too.
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Still, I had mine working on the first day, whereas the other coaster in the
hall (a very large hanging one) was still being built on the last day!
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Yes, another design criteria for my coaster is that it be sturdy and portable.
I plan to display this at least twice a year on NELUG’s train layout. I have a
pretty decent way to connect track segments that will be somewhat modular - at
least as modular as one might hope to be with a setup that requires this much
tuning. But I want to be able to throw it together in an hour or two at most.
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Message is in Reply To:
 | | Re: Roller Coaster runs on Monorail Track
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| (...) It was designed to be modular - each section is 16x16, and drops either 2 bricks (straight) or 4 bricks (corner). I carried it all in flight luggage, each part wrapped in tight cling-film (plastic food wrap) and I'm amazed the curves held (...) (18 years ago, 29-Mar-07, to lugnet.technic, FTX)
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