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An idea forming in the mind many years ago was to take the pneumatic cylinders
and actually make a 'steam' engine.
Inspired by Trevyn a few years back at hte hobby show, when he showed up with a
pneumatic engine that ran on the duplo tracks, I started formalizing an idea.
Well, the idea, in it's very limited glory, took shape this week--
http://sandysparky.net/gallery/20061026_pneumatic_train_1
Yes the website is very slow--I'm presumably working on it.
Anyway, I'm uploading a movie of the engine sorta working--
http://sandysparky.net/lego/big_blue.mpg
It's 71 meg so it's a little big (and it's stipp uploading so you won't find it
'til later :) )
I'll try to compress it soon.
This is why I was asking about fly wheels--the wheels running off the cylinders
don't spin smoothly, but eh, not too worried.
As well, I thought the small pneumatic cylinders could handle the weight, but
alas, not so much. On a striaght piece of track, and with a little coaxing,
it's fine. Anything else and it's the little engine who couldn't.
Yes it's a hybrid--the wheels are pushed and pulled by the pneumatic cylinders,
but the pneumatic switches are moved by an electric motor--couldn't figure out
how to flip the switches via the small cylinders.
Anyway, have plans for a 'better' one, this time using the large pneumatic
cylinders, but will wait until I get more BBB wheels 'cause I don't want to take
this one apart.
Let me know what you think, including any suggestions for improving the
functionality/looks of Big Blue
Dave K
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