2GodBDGlory

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Everything posted by 2GodBDGlory

  1. 2GodBDGlory

    Technic 2022 Set Discussion

    Or something square like the 3L axle extender with pinhole (or the axle-based version)? Should I take this to mean Jim had a review copy in hand?
  2. Yeah, that's great! I'll keep it in mind!
  3. 2GodBDGlory

    Technic 2022 Set Discussion

    I'd expect the pullbacks to have at least one gear for the launch mechanism's ratchet, but your point still stands.
  4. 2GodBDGlory

    [TC21] Plymouth SuperBIRD

    Thanks! I haven't taken any video yet, but I'll think about making one. Yeah, there certainly won't be any interior on this one! Today's build session revealed that I had less space than I was expecting, so stuff will be probably be crammed in desperately. I may have to drop some auxiliary functions, too.
  5. 2GodBDGlory

    [TC21] Plymouth SuperBIRD

    It makes my brain hurt too!
  6. 2GodBDGlory

    42132 - Chopper

    Nice, clean, and simple, with some relatively "big-set" parts in a very little set.
  7. Nice work! I recall seeing concrete pumps at work last summer and thinking it would be cool to see a Technic model of one, what with the huge number of boom joints. I look forward to seeing it finished!
  8. 2GodBDGlory

    [TC21] Plymouth SuperBIRD

    Thanks! I'm glad you like it! You're absolutely right that a different color would make it look way better (Azure, orange, red, or now lime green are all good candidates with the wheel arch available), but of these red is the only color I have any significant number of parts, and even then I'm far from where I'd need to be. I could always order parts, but it'd be a lot, and I'm cheap.
  9. 2GodBDGlory

    Technic 2022 Set Discussion

    I wouldn't be surprised if there are two pullback motors. The Porsche appears to, at least. As for the focus groups, I expect you're right. The two main audiences for a set like this are kids looking for a play model (where pullbacks are great) and adults looking for a display model (where a lack of real functionality isn't missed, though displaying a model with the wheels steered is nice.) The only audience that really loses out here are those who want their Technic sets to reflect real-world engineering, regardless of the looks or play value, but those seem to be the minority...
  10. Like the Zetros? What would it even show in a set that simple?
  11. 2GodBDGlory

    [TC21] Plymouth SuperBIRD

    Update 6: For this update, I started working to fill in the rear aesthetics and added the deploying "jet engine." The wing is also fairly complicated, because it has to have the top section sliding on the pillars as the width changes, the top had to work as an elevator for the airplane mode, and both pillars had to work as rudders for the airplane. This section was actually designed in Stud.io since I had some time to kill away from my bricks... I still need to hook up these control elements to their inputs, though. I plan on hooking up the rudders to the steering and the elevator to some kind of joystick. Anyways, the jet engine was likely the biggest challenge in this largely aesthetic update. I had originally planned on doing a rear pusher propeller and hooking it up to the drivetrain (variable pitch propellers even existed in my mind!), but I quickly realized that any propeller that could fit simply would be comically small, and more complexity is the last thing I need, so I switched to a simulated jet engine. It was a bit tricky to figure out the right proportions and axis on which to rotate it to allow it to flip between normal rear aesthetics and the engine, but the bigger issue was driving it. It has to rotate very quickly when going from car to airplane mode because any delay will cause the rear deck to contract over it before it can escape. However, when going back to car mode, it has to do its motion at the very end, after the deck has expanded around it. I used two long parallel rubber bands and a bevel gear setup to hook it to the transformation drivetrain, allowing it to slip when its motion is blocked. However, I decided that I didn't want to wear out the rubber bands prematurely, I added a medium-strength linear clutch beforehand, which seems to have an ideal stiffness. However, I will need to add some kind of automatically opening lid over the engine, which may take more torque than it allows. Anyways, I've still got a lot of work to do, but I'm starting to feel like the end may be in sight, if only I can make the transformation reliable. My biggest issue there is that the sliding parts in the rear wing constantly bind up when the contraction is in progress, but we'll see what happens!
  12. 2GodBDGlory

    General Part Discussion

    Nice! They do already exist from that Mindstorms set, but this should make them quite a bit cheaper!
  13. @Jim Question: Are we allowed to use lubricant? I don't remember seeing this listed in the rules anywhere.
  14. Very fun! Do you think the springs in those legs would wear out prematurely from this kind of use?
  15. I'm not planning to change a whole lot. My main issue is a lack of a Buwizz, so I would likely use a PF servo for steering, Chinese buggy motors for drive, a custom 11.1V battery, and Chinese 2.4 GHz receivers. I'd lose the proportional control, but I think it would still be fun!
  16. Nice work! I enjoyed watching your WIP posts, and I appreciate the free instructions. I may have to find time to build it with different electronics.
  17. I just realized I forgot a detail with my setup: I was using the medium-sized sprockets rather than the large ones because I didn't have enough track links. Therefore, I would have had an extra source of reduction.
  18. When I built the set out of my collection, I did a very crude PF swap (not worthy of sharing), but I believe I used the exact same motor/gearing combination you originally had: the L reduced at 12:20 followed by planetary reduction. I was running it off of my 7.4V rechargeable camera battery, and it would move, but it struggled much more than it should have. I think you've made the right move adding more reduction!
  19. Also, just so you know, it is possible to go into a user's profile and look at a list of every topic (thread) they've started, which is usually pretty close to a list of all their MOCs. It is a little hidden, though!
  20. Yeah, a car-to-bipedal-robot transformation is very hard. You could try modeling a different sort of Transformer, though. I believe I recall seeing some 4-legged Transformers toys at one point.
  21. 2GodBDGlory

    [TC21] Walking Truck

    Sounds cool! I agree that it is concerning whether or not those linear actuators can take the weight, so I imagine you'll either need to keep the weight quite low or come up with something a bit stronger. I don't think it's anything that can't be solved though!
  22. 2GodBDGlory

    [TC21] Plymouth SuperBIRD

    Update 5: Since my last update, my main focus has been on getting the side panels at the front to fold in correctly. First I got the complex gearing system set up, which was challenging given the very limited space: That 8T gear driven by the worm gear in the above picture runs the axle that drives the white 40T gear down here, which connects to the linkages that actually pull the panels in: Because I'm pulling the linkages from the center of the chassis at the same time as the center is drawing closer to the outsides (due to the linear actuators elsewhere) the total travel of the linkage has to be increased to compensate for this relative motion. I was having troubles with my older brick-built hood/wing and side panels catching on each other, so I took the opportunity to design much cleaner looking, stronger, and more Technic ones using pneumatic hoses, and redesigned the central "peak" to make it fit my new panels better. You can see the car and plane modes here: This model has proven to be very challenging, requiring a lot of rebuilds on certain parts. It's certainly a refreshing break from building more conventional cars where I design a system I expect will work, install it, and don't touch it again. This one takes thought! I'm not quite sure what the next step in this project will be. I'll probably make some tweaks to the side-panel-pull mechanism to enhance its reliability, but from there I suppose I could start working on the roof, which will have to have a retracting center section, or move into the back more.
  23. The simplest way would be to download the Lego Powered Up app. This allows you to make custom profiles (including simple ones) and program things, but it takes a little bit of know-how. There should be good tutorials on YouTube on how to use the app.
  24. 2GodBDGlory

    Technic 2022 Set Discussion

    Sariel has confirmed that in the comments
  25. 2GodBDGlory

    Technic 2022 Set Discussion

    I just commented on Sariel's post to try and get clarification.