Subject:
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Re: New non-magnetic coupler design
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Newsgroups:
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lugnet.trains, lugnet.cad
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Date:
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Tue, 29 May 2001 00:22:01 GMT
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Reply-To:
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cmasi@cmasi.chem.tulane.eduSAYNOTOSPAM
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Viewed:
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990 times
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I just wanted to say thanks for the kind words. The Technic axle is a #2 not a
#3. I also considered using a 1/2-connector-peg-1/2-axle-peg piece too. I might
revisit that idea when I run out of #2 axles. The steering piece thingy could be
replaced with a Technic 1x3 connector beam thingy too, but I only have 2 of
those, so I went with the steering piece. Unfortunately, I am now also out of
1x4 Technic plates :( I guess I'll just have to go buy some more:)
By the way, I feel your pain with your autorack. My 44 stud long (effective
length of 50 studs due to truck placement) double stacks (container carriers)
barely clear the yellow switch thing on the switch tracks. I'll have to be extra
careful if I ever get around to building an 8-wide autorack.
Thanks,
Chris
"James J." wrote:
>
> In lugnet.trains, Christopher Masi writes:
> > Hey all,
> >
> > I finally had the chance to run my trains this weekend. If you don't know, I
> > have been building my trains 8-wide, and the size and weight of my cars was
> > causing a problem.
> > The surging that the long cars cause as they go through the corners is so
> > extreme that at power settings of 5 and 6 (on the LEGO speed regulator) the
> > magnetic couplers kept uncoupling. Inserting a motor near the end of the train
> > actually made the problem worse.
> > I needed couplers that would not uncouple. My first attempt was strong, but it
> > had some problems. I think my second attempt solves the problem fairly well. I
> > use a small Technic bushing, a #2 Technic axle, a steering connector (part
> > name?), and a 1x4 rounded technic plate with hole at each end. The connector
> > fits onto the standard buffer or a 2x2-with-center-hole plate. The good things
> > about this coupler design are (1) it is strong, (2) it is relatively easy to
> > couple and uncouple cars (no snapping of bricks onto pegs, just a slip over the
> > top of an axle), and (3) because the couplers are the same at both ends of the
> > car there is no correct end issue.
> > Oh, another thing that I noticed about these couplers is that, since they have
> > some give, putting a motor at the end of the train doesn't eliminate the
> > surging, but it eliminates the annoying surging noise that comes from the motors
> > at the front of the train.
> > Well, here are some MLCAD screen shots. If you want the files let me know.
> > I'll probable post the .dat files sometime in the not too distant future.
> >
> > http://cmasi.chem.tulane.edu/~lego/NOLTC/tech/new_truck/new_truck.htm
> >
> > By the way, I think that running my trains at high speed causes the track to
> > separate. Do you think that this is strain caused by misaligned track, or is it
> > just part of the hazard of running big trains as fast as you can? I should
> > mention that my track is not snapped down, it is laid out in the living room on
> > the carpet.
> >
> > Chris
> I love your truck design. I might suggest using an axle piece 1 size shorter
> than what is in your display, (a "2" instead of a "3", or similar) but
> otherwise I have no complaint. As for your other problem, I think it is the
> downside of running a big train as fast as possible. I've been known to have
> the same problem with a Lionel train carrying their sub-scale Modern
> Auto-Rack carrier [O-31 Scale]. It will clear an O-27 switch but will it
> clear the signal beside the switch? The answer is usually found in a
> derailment and a plastic support slat or 2 being knocked off the side of
> the car.
>
> -- James J.
> "Don't just 'play well', play better!"
--
See some of my LEGO creations at http://cmasi.chem.tulane.edu/~lego/
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Message is in Reply To:
 | | Re: New non-magnetic coupler design
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| (...) I love your truck design. I might suggest using an axle piece 1 size shorter than what is in your display, (a "2" instead of a "3", or similar) but otherwise I have no complaint. As for your other problem, I think it is the downside of running (...) (23 years ago, 28-May-01, to lugnet.trains, lugnet.cad)
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