Subject:
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Re: Opening Door
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Newsgroups:
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lugnet.build.schleim
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Date:
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Wed, 16 Nov 2005 21:58:04 GMT
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Viewed:
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3112 times
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Hi Mark,
> There are two key differences between the plane and your solution:
>
> 1. The plane's door is a lot thinner and does not require movement in one
> straight direction at 90 degrees to the body as your train door does for the
> first 1L of opening movement.
>
> 2. The positions of the pivots are different, the plane having its door pivot
> further inside the body when closed and the body pivot 0.5L from the outside of
> the body.
However if we reduce the width of the door by one plate as I suggested we free
up the 90degree requirement (which is why I suggested it). As such, I can't help
but feel that a dual pivot solution should be available.
> Given these two differences, your solution of 4 droid arms for the train is
> good. In order to get away from two sets of droid arms (or a three-pivot
> mechanism with other parts) you would have to eliminate the need to move the
> door straight out for 1L before moving sideways. This would require a door no
> thicker than 1 plate, with the SNOT facing outwards rather than along the body,
> which creates problems for your door window scheme.
>
> As an alternative 3-pivot scheme with fewer droid arms, could you incorporate a
> green 1x2+1x4 bracket http://www.bricklink.com/catalogItem.asp?P=2436 or a green
> 1x2+2x2 bracket http://www.bricklink.com/catalogItem.asp?P=44728 into the door,
> with a 1x2 hinge brick http://www.bricklink.com/catalogItem.asp?P=3937c01
> mounted on it (2L high and 1L wide orientation), holding the piece with the rod
> cross section http://www.bricklink.com/catalogItem.asp?P=2540 for the droid
> arms? That might give you just enough freedom of movement in the 3rd pivot to
> allow you to eliminate 2 droid arms.
Hmm, I hadn't thought of using brackets but they could give the neccesary fine
adjustment to better layout the door pivot point. I'll experiment with this.
> Alternatively, buy a few Fenris Wolf Viking sets - they have lots of black droid
> arms!
>
> Mark
Well I haven't got anything planned yet for using the door (it was just a sort
of case study) but if I do I'll remember that.
Thanks for your help,
TIm
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Message is in Reply To:
 | | Re: Opening Door
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| (...) There are two key differences between the plane and your solution: 1. The plane's door is a lot thinner and does not require movement in one straight direction at 90 degrees to the body as your train door does for the first 1L of opening (...) (19 years ago, 16-Nov-05, to lugnet.build.schleim)
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