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Subject: 
Re: Need Help: Rotating Sections of a Spaceship
Newsgroups: 
lugnet.build, lugnet.technic, lugnet.space
Date: 
Thu, 25 Nov 2004 02:39:03 GMT
Viewed: 
3890 times
  
In lugnet.build, Leonard Hoffman wrote:
   Heya guys,

Right now I’m planning on building a large “science factual” spaceship with a rotating centrifugal-gravity hab-ring.

Design Drawing

I was wondering if anyone could give me some hints/suggestions/how-to for powering the rotating section. The Hab-Ring is going to be made with click hinges into an octagon - obviously it is going to be studs-in (mostly). I want to have removable panels along the walls of the HabRing so people can see the interiors

The counter weight ring needs to turn in the opposite direction as the main Hab-Ring. The whole thing will stand on a large base of some sort.

Questions:

Will I be able to run both rings off of the same motor? Will the motor be strong enough?

If the single motor isn’t strong enough to run a single ring, can I use two motors in tandem? How?

Anyways, thanks in advance for the help!

-Lenny

Hey Lenny, I just wanted to pipe in with my two cents. I’ve been working on a ship with a rotating mid-section, though it’s probably not as large as yours is looking, it’s a medium minifig scale ship, and it only has one rotating section, in the middle of two stationary sections. I want to reccomend using the big technic turntables, you can get em from lego educational 2 for something like 12 bucks. They are open in the center, which works for a cool hatch-way for minifigs. Also, they have gear ridges on both the inside and outside, and alot of spots for technic connectors. One of the big issues I’ve found, is ensuring that you have a strong enough structure attached to the turntable or gears to be able to handle the torque load. Your motor is basically going to want to twist the sections apart, because breaking a smaller number of stud connections is easier than turning a large mass, it’s basically trial and error to see how much is enough, or just go for overkill. Hope some of this is useful info.

-Dan Rubin



Message is in Reply To:
  Need Help: Rotating Sections of a Spaceship
 
Heya guys, Right now I'm planning on building a large "science factual" spaceship with a rotating centrifugal-gravity hab-ring. (URL) Drawing> I was wondering if anyone could give me some hints/suggestions/how-to for powering the rotating section. (...) (20 years ago, 24-Nov-04, to lugnet.build, lugnet.technic, lugnet.space, FTX)

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