Subject:
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Re: O-Train
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Newsgroups:
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lugnet.trains
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Date:
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Sat, 19 Mar 2005 03:59:38 GMT
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Viewed:
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2552 times
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In lugnet.trains, Larry Pieniazek wrote:
> In lugnet.trains, Jason Allemann wrote:
> > In lugnet.trains, Steven Barile wrote:
>
> > > I was wondering what kind of horizontal latitude your get from your rubber bands
> > > when traversing uneven track conditions?
> >
> > I'm not really sure what you're asking about here. Side to side play in the
> > connection? Front to back range of motion?
>
> I'm betting he's talking about what the connection does when it goes over a rise
> or hump in the trackwork. Even if you didn't DESIGN hills in, you get them,
> especially with large layouts.
>
> Articulated cars are particularly vulnerable to issues with this, if the planes
> that the two adjacent cars are in are no longer parallel, it may put stress of
> some sort or another on the coupling if it wasn't engineered to withstand that.
>
> ++Lar (now down to 3 days to go in Singapore....)
Ah yes, good points. I just threw together a small test loop with some
intentional grades (2 plate per track slope) and some uneven transitions (pieces
of cardboard under the track). The couplings seemed to perform well, but then I
probably don't really know what to look for. They didn't fall apart at any
rate. :)
The connections gave enough to allow the shared bogies to hug the rails nice and
tightly over all the transitions. I've had the train running the loop for about
half an hour without incident, and inspection of the connections seem to
indicate nothing got loose. Of course this isn't really indicative of what the
long term performance on a 'production' layout might be.
The bogies at the front of the engines on the other hand seemed to have a few
issues with the transitions. Nothing a couple of minor alterations didn't fix
though.
Steve, thanks for posing the question. It's better that I did these tests now
than potentially being surprised with some unexpected problems at our next show.
J
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Message has 1 Reply:
 | | Re: O-Train
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| Great to hear about the successful test. The dynamic nature of trains is often overlooked. Ocationally there are great looking MOCs posted but don't always run well in the real world; backwards thru points and the like. Your close coupling design (...) (20 years ago, 21-Mar-05, to lugnet.trains)
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Message is in Reply To:
| | Re: O-Train
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| (...) I'm betting he's talking about what the connection does when it goes over a rise or hump in the trackwork. Even if you didn't DESIGN hills in, you get them, especially with large layouts. Articulated cars are particularly vulnerable to issues (...) (20 years ago, 18-Mar-05, to lugnet.trains)
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