elx Posted February 26, 2014 Posted February 26, 2014 Dear all! I have a construction issue that someone might be able to help me with ... In the first picture below, one of the two cabins on my Lego aerial tramway. They travel along two wires (nylon rope 0.7 mm) on wheels (currently model 42610). These wires need to be supported by a tower along the way, and the challenge is to construct "saddles" for each side of the tower that can support cables while allowing for the cabins to slide over - without falling off. I have temporarily solved this with a wooden structure, but it is supposed to be all Lego in the end, right:) Below a picture of how these saddles usually look irl. Perhaps I can build something similar, but I have no clue what parts to use. Perhaps there is some sort of thin tube in the range that I can attach to the saddle, and let the nylon cords run through it and the cabin slide on top? Tricky ...All ideas are more than welcome, also entirely different solutions all the way:) Best! //E Quote
Alasdair Ryan Posted February 26, 2014 Posted February 26, 2014 (edited) How about using some rigid hose attached underneath to the 'tower',the only problem with this is that the wheels you are currently using are a little too small (the internal width) to prevent the carriage coming off or getting stuck. Edited February 26, 2014 by Alasdair Ryan Quote
DrJB Posted February 26, 2014 Posted February 26, 2014 From what I have seen, the cabins typically do not travel on the wires .... They are instead attached (via a clamping mechanism) to the wires, and the wires move. Also, making the cabins move on the cable means you need to motorize each one of them ... Check this thread http://www.eurobricks.com/forum/index.php?showtopic=91533 Quote
elx Posted February 27, 2014 Author Posted February 27, 2014 Thanx! There are different kinds. I’m building a reversible aerial tramway; they travel along one or two wires, pulled by a third one driven by a motorized drive wheel at the mountain station. Classic James Bond fight scene setting by the way:) http://en.wikipedia.org/wiki/File:PortlandTramCar3.jpg Quote
TinkerBrick Posted February 27, 2014 Posted February 27, 2014 Hi elx! besides the cabin and wheel setup i would recommend not to use nylon strings. From my experiences with kites, nylon tends to stretch itself under strain. Get some kevlar rope from a local DIY store. You can span it over "long" distances with counterweights on both ends. The ropes will span tight and will act like rails and give the wheels more guidance. Quote
Doc_Brown Posted February 27, 2014 Posted February 27, 2014 Can't really make any suggestions, but I am really keen to see it up and running! Good luck! Quote
PG52 Posted February 27, 2014 Posted February 27, 2014 Usually, I use a bigger wire, but that solution could work well : try to use 2L axles to support the 2 wires ;) Quote
NXT45 Posted February 27, 2014 Posted February 27, 2014 (edited) Welcome to EuroBricks! I think something like this would be dead simple. http://thumbs.dreams...-lift-55217.jpg Hope it helps! NXT45 Edited February 27, 2014 by NXT45 Quote
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