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Subject: 
Opening Door
Newsgroups: 
lugnet.trains, lugnet.build.schleim
Followup-To: 
lugnet.build.schleim
Date: 
Wed, 16 Nov 2005 18:39:29 GMT
Viewed: 
67 times
  
Dear all,

I was looking at the pictures of 7893 today and noticed that it’s doors open by using droid arms as hinges. I wondered if such a technique could be employed in a train an found that yes it could... but with limitations.

My first attempts were to use just one set of arms to make the door. This proved vaguely possible but gave a really weird opening shape so was not very good.Eventually I settled on an approach using two sets of arms so that the door looked like this MPD

This solution is satisfactory and opens quite well but I can’t help but feel that a better solutions should exist employing only one set of droid arms. As such I’m asking all the SNOT masters on Lugnet to try to find a better solution, preferably using only one set of droid arms. Hopefully someone will come up with something good. I feel that one plates height (8LDU) can be taken from the door and it will still look OK (in fact the gap might look quite good).

A quick word of warning to CADders, these solutions will often puch the Lego tolerances to their limits so I seriously suggest using real bricks to test. Some of my early designs seemed fine in CAD but were just off in the brick.

Hope you enjoy the challenge and I’m sure someone can come up with something good.

Tim



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