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Robin Sather wrote:
>
> Hi all,
>
> Hello all,
>
> We (the Vancouver Lego Club) just finished doing a show locally this
> past weekend, and I thought I'd post a link to some preliminary
> pictures of the Harry Potter stuff that I created for the show.
>
> Sorry for the blurry pix, an older digital camera was used. Better
> ones are coming soon.
>
> On top of the mountain, you'll see a structure that is not part of the
> Hogwarts area. It's the upper station of a wonderful gondola system
> that had working cars moving up and down (automatically) all weekend.
Any details on the gondola system? Any pictures which show it more?
--
Frank Filz
-----------------------------
Work: mailto:ffilz@us.ibm.com (business only please)
Home: mailto:ffilz@mindspring.com
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> Any details on the gondola system? Any pictures which show it more?
The gondola was created by David, our youngest member (16 years old).
Awesome creation! Unfortunately, David is not online, so I can't give
you contact information for him. The gondola had two cars mounted on
a fixed length of string. No tensioners or springs were used. A
light sensor was mounted at the bottom of the tram-way. When the car
crossed it, the motor would stop, wait 5 seconds, then reverse
direction. Eventually the other car would cross the sensor, etc. It
would take about 10 seconds for a car to go from top to bottom.
Looked really great.
Check out:
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=60454
- The creator (David) can be seen behind and to the left in the white
T-shirt.
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=60455
- Detail of red and blue cars
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=60458
- Bottom Station. David left part of the roof off to show the
workings. You can see a white light brick at the lower middle of the
picture, with a light sensor opposite it, across the tram-way.
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=60461
- Upper station with the blue car
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=60462
- Another view of the upper station with the blue car
Hope these help,
Robin
fut .town
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In lugnet.harrypotter, Frank Filz writes:
> Any details on the gondola system? Any pictures which show it more?
To tell you the truth, I was skeptical about making a working gondola...
Well David totally proved me wrong!
I've spent some time looking at the system (mainly cuz the system sits on my
mountain), and I've got it with me anyway. So I took 2 close-up pictures of
the gondola's innards:
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=6075
The first picture (gon1.jpg) is slightly angled, and the second one
(gon2.jpg) is more overhead.
In case it's unclear, the string comes in towards the top of the picture,
around the top yellow pulley, down around the bottom pulley, down and around
the yellow 1x1 round plates, around the tire, and then exits the system.
The string is guided by a few more pulleys and tires (without rubber) on its
way up and down the mountain.
I believe that the gears inside make it more complicated than it really is.
The piece that does most of the work is the tire. David cut a slight groove
into the tire, and that's where the string sits. The amount of friction is
remarkably high! So basically, the technic motor turns the tire, and the
tire pulls the string.
I suppose the technic chain and the light brick (which has been partially
painted black) is there for effect only.
Remember, the gondola was created by David, and he's the one deserving of
the credit!
Hope that helps,
-Bryan
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