trekman

Eurobricks Citizen
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About trekman

  • Birthday 11/10/72

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  • Gender
    Male
  • Interests
    Technic lego, photography, computing, video editing

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  • Country
    Ireland
  1. This is great now. A big improvement on the first attempt.
  2. My walker is walking, and I am just working on the weight shifting at the moment. I will try and post some photos. I actually wasn't even looking at videos of previous effort before I started mine.
  3. I hope that this helps
  4. If you could lower your pivot point slighly at the rear of the dump bed, this way the actuators would be pushing back as well as up. This does help in the initial start up of the lift. As presently the actuators are trying to push up from a near horizontal position.
  5. I would fear that the weight of the beams alone, which make up the dump bed, have reduced the load that the actuators can tip. Also why do you have the two raised sections in the floor of the bed. Is that to make room for your L Motors powering the dump bed? If so, I would have repositioned the motors, and had a flat bed, and reused the panels (much lighter) on the sides of the dump bed.
  6. If that is the shape of your main chassis, then I would say that you need to have a deeper frame, with more diagonal bracing. Look at the Technic Unimog, the designers there used diagonals to brace the top and bottom of the chassis to reduce flex. And it was only half the length of your truck. You need to understand a little more about beams and how they work. Loads are carried on the top and bottom flanges, they further apart they are, then a greater load can be carried -with minimal distortion. I hope it works out for you.
  7. Hopefully the pneumatic cylinder will shift each leg at the ankle, and then I may be able to straighten the top part of the torso with another cylinder at the waist. The grey foot is the improvement with the cylinder added.
  8. I present to you my effort in this competition. This will be a pneumatic walker, powered by a separate compressor. There will be a supply going to the pneumatic valves. These will create a sequence of eight movements at four cylinders, which should be enough to lift the legs and tilt the lower body. This is very much at development stage and will be added to until the deadline. I have a nice selection of pneumatics, which makes this contest quite appealing.
  9. Lovely bike, the yarn system is slightly reminiscent of the old flex system, but you have infinite lengths available. The whole build is certainly thinking "outside of the box". Well done.
  10. Now that is a lot of planning, work and detail. I especially like the lighting. Well done.
  11. Interesting jeep, but would not be to my taste. You have managed to fit in the functions well.
  12. http://www.brickshelf.com/gallery/mervyntomb/Arocs/dsc_6892.jpg I hope this helps.
  13. I have six wheels which I seldom use, but still nice to have. There is no guarantee that they will hold their price at current levels. Just look at the thin 6L yellow lift arm https://img.bricklink.com/PL/32063.gif It was hard to get, with a few on the Power puller set only, and now they are placing them like €50 notes all over the New Mercedes Truck, as well as on the 2014 models. Be warned about the wheels!
  14. http://www.brickshelf.com/gallery/mervyntomb/1CX/jcb1cx_pneumatics_scheme.jpg This is a basic schematic for the pneumatics of the 1CX Other images can be found here, after moderation. http://www.brickshelf.com/cgi-bin/gallery.cgi?f=561167
  15. I have just finished building the truck with clam shell crane, and the first mod was to relocate all the pneumatic switches to the same side as the crane rotation. A bit fiddly, but worthwhile in that all main crane functions can now work from the one side. I also put proper spacing on the rear wheels and the proper wheel finishers on the front. (They are too much set in on the instructions.