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JLiu15

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  1. JLiu15
    Thanks
  2. JLiu15
    UPDATE 3/15/18 Hey guys, it's been a while since I've been on Eurobricks. I was in Atlanta last week so I did not have much time to work on my MOCs, but I've recently done a complete makeover of the knuckle boom crane. After hearing from several of you that the original crane was too large and bulky, I decided that I would have to make a smaller and more compact crane. The new crane is not only closer to scale but also functions better, as the original crane operated sluggishly due to its heavier weight. The new crane still has the same functions as the original, but it is a lot more simple. I've removed all unnecessary parts, such as the panels, and I've made the entire crane narrower. I decided not to use the Arocs gear rack this time for the jib, as it does not attach to the boom as firmly as simply using beams. The winch still has a pulley system, but the string is routed through the bottom of the jib this time. Photos:
  3. JLiu15
    Thanks! I see, it's kinda too long for a bike. This was definitely a "function over form" MOC; I paid much greater attention to how well it performs than how it looks.
  4. JLiu15
    Thanks! I'm beginning work on the actual truck part of it now. The building process was weird for this MOC - most people start with the truck, but I started with the trailer as it's more "function-dense"
  5. JLiu15
    Yeah lol. Just felt like monster bike sounded too lazy
  6. JLiu15
    Amazingly done! Nice to see a new MOC from you after such a long time :)
  7. JLiu15
    Yeah, considering it's something I'm taking to BrickFair this summer. I've already detached the crane and I'm working on something simpler. I'd try to keep the base within 5 studs and the jib within 3.
  8. JLiu15
    Thanks for the advice! I've already detached the crane from the trailer and will spend the next week or so working on a better crane (I hope to get both the new crane and the chassis of the Kenworth truck done by the end of spring break). I'll post an update when the new crane is complete.
  9. JLiu15
    UPDATE 3/4/18 I renamed this MOC to "Orange Motorbike" because "Monster Bike" sounded dumb. I've also re-uploaded the video, as there were black bars around the screen in the previous upload and some scenes weren't so great.
  10. JLiu15
    Thanks! I guess the word "fast" is relative. Compared to what they can pull off with RC Buggy motors it's not, but compared to how much speed you can normally get out of PF motors it's pretty fast.
  11. JLiu15
    Hey guys, I've come to realize that the crane is too bulky and out of proportion with the rest of the trailer. And seeing that I'm taking this MOC to BrickFair in August, I need to make sure everything is as good as it can be. At this point I need to plan out my build so I have time for my second BrickFair MOC, so if you guys have any honest suggestions to my questions that will be great How big of an issue is the bulky crane? Is it not too big of a deal or is it so big that it's repulsive? If it's that bad I'll revise it immediately. If it's not a big deal then I'll probably hold off on it until everything is finished. How many studs would you say is too wide for the crane? This would help me limit to a certain width, such as 5 studs, if I were to make any revisions. If I were to redesign the crane, I need to make sure it works with 11L cylinders. I also want to make sure the jib extension uses the Arocs gear rack with the gray casing, as I specifically ordered it from Bricklink for this MOC and it would be kind of a waste if I don't use it. But if removing it is necessary to make it less bulky then I'll probably take it out. Any suggestions on making the jib sturdier with the winch drum and all that attached to it? Right now the jib tilts to the side when raised, which is an issue. The 8436 does not have a winch so it's hard to see how everything can go in. If you have any suggestions, let me know down below. Thanks!
  12. JLiu15
    Yeah, I see. I was trying to model something like the 8258 but I think I may have gotten carried away and made it too large. I'll take a look and see if I can modify it if I have time after everything is finished, but I'll have to make sure it works with the 11L cylinders from the Arocs, but thanks! Thanks! I'll probably do some work on it if I have time after everything is complete
  13. JLiu15
    Thanks :)
  14. JLiu15
    Hey guys, it's been a while since I've updated this thread, but I've made lots of progress on this MOC since my last update. In fact the entire trailer is finished at this point, with a total build time of 30 hours. The crane, which is the highlight of this model, is completely pneumatic. There are two pneumatic functions: the boom and the jib, and both utilize the large 11L cylinders from the Arocs set. It's also got some manual functions as well, such as the extension and the winch, and I ordered some stuff off Bricklink for the purpose of this MOC. This includes the gear rack casing in light bluish gray and the old metal hook, which I got for a whopping 13 dollars! The winch forms a pulley with the hook, which allows it to gain some mechanical advantage. There is also a ratchet attached to the spool that prevents the load from pulling the string down. Another important part of the MOC, the rear bed, seemed easy at first but was in reality quite difficult. I had to make some changes to the trailer's chassis to allow the bed to attach to it, especially in the front where I had to significantly widen the trailer arm so the front of the bed can sit over the kingpin. In the end, the bed is made of 26 5x11 panels and some beams and it can be removed by pulling out 5 half bushes. At this point, I'm starting the truck portion of this MOC. It will be at a similar scale to the 42078, and will have a black body and working fake engine. A lot of features/functions will be similar to the 42078. For example, it will utilize a good amount of System pieces and the fake engine will probably be done with half bushes as "pistons" as well. I'll work extensively on the truck throughout spring break, and I hope to get it done by late April. Photos:
  15. JLiu15
    I've wanted to build another bike MOC for quite some time now, seeing that my Stealth Bike from 2 years ago had plenty of room for improvement. I wanted to make one that drives much faster and remains more stable than my Stealth Bike, and to get as much speed as possible out of the PF system. The idea for a second bike came after getting the 42054 set on discount. I saw the tires as a perfect opportunity for a bike, as their size means that I can make a bike large enough to fit all the electronic components inside. I also found that they are not easily tipped over, which is advantageous for a bike model. To reduce friction, I connected two L motors directly to a single wheel geared 1:1, which was a lot of speed for PF. In fact, I was very surprised that I did not have to use RC Buggy motors (which I don't have) to get such speed. The MOC features a modular build, with the rear wheel/suspension part being attached to the main body which housed the battery box, and the steering mechanism coming off of it. The suspension worked well and had decent range, and is not overly stiff. I used an interesting mechanism for the steering, which involved a servo motor controlling 2 links that steered the front wheel. However, I had to reduce the servo's angle to 45 degrees in the profile designer, as making the full 90 will cause the servo to stall. A small turntable allows the wheel brace (I'm not sure what you call that) to pivot as it steers, and there are handlebars that work. One thing I wasn't so happy with about this MOC is the large turning radius. Because I found large steering angles made the bike tip over easily, I had to make it small, and making U-turns in a reasonable space is nearly impossible. Another thing I didn't like is how steering must be done at low speed to prevent it from tipping over. This was worsened by the fact that it was quite windy the day I filmed it, which made it hard to control. Overall, this is a MOC I'm pretty happy about. I got lots of speed out of using just PF elements, and it did not become sluggish as weight was added on during the build. It was lots of fun driving it around, and remained quite stable without the use of support wheels Video: Photos:
  16. JLiu15
    Thanks! I placed the compressor in the middle because it seemed to save space that way - there was some extra space in the gearbox as I was building it that I found perfect for a 6L pump. As for the turntable, What axles do you mean? I get that it takes up a lot of space lol - seeing as there won't be much going on in that space above the rear axles, I just spread out the gear training a bit more in that section. There's nothing functional underneath the trailer, and I used single tires. I might update an underside view in the next WIP update to the trailer. BTW, I never knew using extenders with the red gears is not a "valid" solution - they are more thick than their dark gray counterparts? There doesn't seems to be any friction though. If I can get in there without taking apart too much of it, I'll try to replace them with the dark gray gears. For the pneumatics, there will actually only be two functions, not 4. The crane will be very similar to the one on the 8258, except with pneumatics in place of the linear actuators. The valves are also in place, one on each side of the trailer. Look between the mudguards and the rear outriggers, and you will notice a pneumatic valve with a red ball on the lever. I still have to get the hoses routed - I'm planning on getting a long roll of pneumatic hose, like on the 8868 set.
  17. JLiu15
    Okay thanks! I'll check it out Thanks
  18. JLiu15
    Thanks :)
  19. JLiu15
    Feels like it haha
  20. JLiu15
    Oh well. We'll know how they look by August:)
  21. JLiu15
    UPDATE 2/12/18 Over the weekend I've finished the chassis of the trailer. I decided not to use a worm gear to drive the turntable, because it puts so much stress on the gear and the surrounding pieces. As promised, I've put 3 axles on the trailer, and this thing is long! Almost the length of my Airport Crash Tender. I've updated the central portion of the trailer - the 15L beam through the middle is perhaps the most important piece in the entire model, as it prevents the trailer from bending. The battery box is placed in the very back, and acts as a counterweight for the trailer (the knuckle boom crane will also act as a counterweight). I've added simple outriggers in the back that lock in place when lowered, and can lift the wheels off the ground slightly when the front stabilizers are also deployed. I also have the valves in place, with one on each side controlling the pneumatic functions on the knuckle boom crane. At this point, I have some questions regarding the rest of the trailer: Do you guys think I should use the old metal hook (like on the 8258 or 8421) for the crane's winch, or should I make one out of some pieces, like on the 42009 or 42042? I will be building the knuckle boom crane that will go in the back of the trailer. It will be something like that of 8258 except the linear actuators will be replaced by pneumatics. The only problem I have is, none of the pre-cut sections I have fits really well, so I will need a long roll of pneumatic hose and cut it into sections. Do you guys know where I can get a long section of pneumatic hose, or where I can get custom hoses that are cheaper? I'll try to stay away from using custom hoses as this is a MOC I'm taking to BrickFair. Because I'll have to order some parts off Bricklink at this point, I will probably move on to the truck until I get the parts I need. Photos:
  22. JLiu15
    Oh, really? Why were photos not allowed this year? When and where was the toy fair at? New York?
  23. JLiu15
    Looks like a great start!
  24. JLiu15
    I'm not sure if this is the right place to ask this but, when will the 4 2018 2H sets be revealed at toy fairs? Because in previous years they have already been revealed at this point, but so far all I see online are prelim image, or did I miss something?
  25. JLiu15
    Great job! I've always felt that low-end Lego Technic sets look like they were put together in seconds (like the 42084), and this shows you can do so much more even at small scales.
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