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May contain: Logic, theories & Schemes (Malevolent, Benevolent and Benign). A chorus of children. War, Peace and a thousand elephants.
Monday, 30 April 2012
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Wednesday, 11 April 2012
Rube Goldberg Machine Post 2
CATAPAULT
Loading machine with marble:
Loading catapult: Put the marble
into the cup via a drop chute or similar which is easy enough.
Achieving correct tension:
Could be setup before the machine
has started or we might have a cog that winds the arm back. Best to arm it before hand unless we’re using
multiple marbles that are going to be following each other. In that case something that is able to reload
itself is going to be a priority.
Trigger mechanism:
At it’s most simple a piece of string
could restrain the arm of the catapult and, at the proper time the string is
either snapped by a blade or burnt by a candle
Once the string has been broken
the candle will need to be doused. So
ideally what we need is a conveyor belt that stops when it is time to burn the
string and starts when the string is gone.
It will be a good look if we manage to douse the flame in a candle of
water.
We could use the trigger string
to act as a halter for the candle if it were to be attached to a toy car and
thus achieve movement. Once the string
has gone then the car is free to travel upon it’s merry way and sink in a
watery grave.
PIPE AND CUP
Image 1:
Ball enters piping and gathers speed which throws it into the cup.
Ball enters piping and gathers speed which throws it into the cup.
Image 2:The cup is balanced on an axle
and the weight of the marble dislodges the cup which moves it down and the
counterweight up.
Image 3:When the cup reaches it tips
over, allowing the marble to continue on its way
EGG CARTON CAR
String
attached to both ends of toy car.
The forward
one is attached to a weigh while the rear one is just long enough to allow the
car to tip over the edge of the track and once again allows the marble to roll
free
PAPER STAIRS
Normal fold:
Rigidly folded with walls on each side
V type fold:
Doesn’t really work for gentle slopesU type fold:The paper here is barely folded at all. If suspended it would be at the mercy of any errant breeze. But if used as a tipping platform then it could work quite well.
Rigidly folded with walls on each side
V type fold:
Doesn’t really work for gentle slopesU type fold:The paper here is barely folded at all. If suspended it would be at the mercy of any errant breeze. But if used as a tipping platform then it could work quite well.
BOOT SWING
Rear string is
held at the ready
The string is
severed though means unknown at this point.
The boot
swings forwards, kicking off the next part of the machine. If a swing like this is to be the final part
of the machine then we might give it a very long swing but boots are not
aerodynamic at the best of times and the bigger swing that we have the more
chance of the boot twisting in midkick.
The boot might
also be needed to weighted in order to provide some real power.
LINKS:
Rube Goldberg Machine Post 1
LINKS:
Rube Goldberg Machine Post 1
Tuesday, 10 April 2012
Monday, 9 April 2012
Sunday, 8 April 2012
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