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Click to enlarge.
Front view. Here you can see how ridiculously short the
umbilical is.
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I entirely underestimated the length of tubing I would need to link this
model to an external control box. As there were eight cylinders (four
of which are pairs), there was an awful lot of tubing. I doubt wether
the driver could sit in the cabin, as it is full of pipes! This also meant
that the remote box was not very remote, you can see it in some of the
images.
However, this remoteness of control meant that the digger could operate
almost as if it was independent. All motors and all pneumatics are controlled
away from the vehicle. This is best seen in these two movies of the backhoe
in action (2.2Mb - worth the wait) and the front
scoop (464k).
Now for some bad news. Nearly all of the projects on this site have suffered
from some sort of photographic mishap, be it a pink car or a dodgy video
capture device. This project is no exception. I had taken far more pictures
than you see here on my new digital camcorder, including dissasembly shots
(to show assembly method) and closeups. However, fate (and stupidity)
jinxed the whole thing, and now there's 10 minutes of student drunkeness
where the lego should be on the tape. This is also the reason for the
frontscoop movie cutting just short. Of course filming the deconstruction
meant taking the model apart, and taping over this has made reassembly
impossible. Sigh.
The few pictures that survived were, thank goodnes, enough to show all
sides of the mode and the movies show all the motion (except steering.
Also, I got much better at driving the backhoe than that, but..... sigh
again). Next time, maybe, just maybe, I'll get it all right.
Back to models.
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