Subject:
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Re: Drawbridge help needed!
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Newsgroups:
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lugnet.build
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Date:
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Thu, 28 Mar 2002 01:30:13 GMT
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Viewed:
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427 times
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In lugnet.build, Pedro Silva writes:
> Hi all,
>
> So, now I need to devise some counter-weights. The thing is, they must allow
> the movement of the bridge, and so far all my attempts have failed in this
> particular point.
>
> Has anyone made some bridges like this, that I can use as reference? Mainly
> for the *shape* to use.
>
> Some data about the bridge:
> Span: about 64 studs (previous version was 32, but was too small to be useful)
> Width: 18 studs
> Height: just enough to let a metroliner pass
> Height *to the ground*: not defined, but as low as possible. Minimum of 8-9
> bricks, to allow the movement of the counter-weight (any solution below this
> limit is most welcome!).
>
> My earlier attempts with Pneumatic cylinders failed. The use of a motor now
> seems the cleverest option... but if you know different, please hint me
> about it. I am really trying hard to do this bridge, and display it in
> PLUG's August meeting.
You can get LEGO weight elements (9936) from Pitsco. Very handy. Also, the
counterweight doesn't have to go below the bridge - you can use cables with a
pulley system, or something like this bridge at Constitution dock
http://www.adagiomarine.com/year2001/images_hobartdocks/F00012.html. I wish I
had a better shot of this - the bridge is in the bottom right, the
counterweight is the large concrete block at the top of it - traffic passes
underneath this.
HTH
ROSCO
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Message has 2 Replies:
 | | Re: Drawbridge help needed!
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| (...) LEGO weights are great but can cost some bucks, $4.95 a pair (2K2 catalog) and that excludes shipping. (Save the money for Technic beams) Low cost alternative, and I've heard the train guys mention this, roll of pennies. Just make a container (...) (23 years ago, 28-Mar-02, to lugnet.build)
| | | Re: Drawbridge help needed!
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| (...) I thought of using old "D-size" batteries; I used 4 of them, but they were not even close to enough. I'm thinking of placing them higher, and maybe "covering" the track with them - but, like I said earlier, space may become a problem. My dad (...) (23 years ago, 28-Mar-02, to lugnet.build)
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Message is in Reply To:
| | Drawbridge help needed!
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| Hi all, I am currently building a small drawbridge for my train using Technic elements, but I came across a difficulty which I was not expecting to be so problematic: the need of a "counter-weight". I did know I was *probably* gonna need one. And (...) (23 years ago, 28-Mar-02, to lugnet.build, lugnet.trains, lugnet.loc.pt)
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