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In lugnet.org.us.lucny, Ben Fleskes writes:
[Snip after reading it twice]
> Hope this information is useful to people.
>
> Ben Fleskes
> PNLTC
Thanks Ben (from PNLTC),
for posting your basical design rules for the PNLTC roundhouse.
I have been working some more on my roundhouse redesign yesterday night and
have made the decision to do it in 2 main submodules: both will be in 96x50
(that means the first row of bricks will be 2xX ones that overlap the 48x48
plates by one stud on sides). These two submodules will be put on the table in
the shape of a asymmetric "T". The "-" at the top is the 4-bay roundhouse, the
"|" will be the turntable and the line of track that leads from the bottom over
the 48-studs turntable to the roundhouse. The turntable shall be removable and
the rest of the module will be not much more than a massive plate of 50x96 (and
2.66 height), that can be put under the roundhouse for transportation purpose.
So far I am not sure how a track of only 2.33 height over ground can be done as
motorized turntable. But the MichLTC (but who from MichLTC?) has done at
least a "less then 4 high" version of a 48studs table as it seems. I hope I can
"copy" and lower that in some way.
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=102896
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=102899
(BTW: are that magnets also, or is that some mindstorms sensor?)
I think their roundhouse is the state of the art right now and I would like to
reach a similar level if possible... (And after my dividing of the the huge
modules and partly rebuilding some sub-modules I hope my roundhouse will find
its way to public shows again.
Leg Godt,
Ben
(FGLTC)
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Message has 2 Replies:
 | | Re: Advanced Design Train Roundhouse
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| (...) To get the turntable as low as possible I think the key is to remove the requirement that the motor be located under the rotating track. Here are a couple of possibilities: * If you put the motor outside the circle and have it drive a wheel (...) (22 years ago, 16-May-02, to lugnet.org.us.lucny, lugnet.trains)
| | | Re: Advanced Design Train Roundhouse
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| (...) Steve Ringe, our 8 Wide King. I will see if I can get him to reply, he usually is too busy building to post much. (...) The turntable sequences by using mindstorms touch sensors to detect when the table is "close" to the approach track and (...) (22 years ago, 17-May-02, to lugnet.org.us.lucny, lugnet.trains)
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Message is in Reply To:
| | Re: Advanced Design Train Roundhouse
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| Hmmm, Lot of meat here. I'll try to be brief: I've done about 4/5 complete iterations on my roundhouse and turntable over the last five years. The latest was completed for the PNLTC show at LEGOLand California. Gallary Pictures are at: (URL) (...) (22 years ago, 15-May-02, to lugnet.org.us.lucny, lugnet.trains)
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