Jeroen Ottens

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    The Netherlands
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  1. When I worked there we did about one (flagship) model per year with two designers. Don't underestimate the number of iterations required to meet all the requirements that need to be met. I've made literally hundreds of variations of the same model to get it perfect. Of course my experience is now nearly 25 year old, so I would expect that things work differently now.
  2. LvdH answered already: I use Brickset to list the new parts. There they also indicate whether parts are available on PaB as well: The list isn't 100% accurate in that respect though, I found the small red helicopter blade on PaB, while Brickset lists it as March release that is not available yet.
  3. The January parts have appeared again on PaB...
  4. I like your thinking. Could that softer material have anything to do with their quest to get away from oil based plastic?
  5. Shouldn’t all the replies be hidden by spoilers? Or answered via PM? Otherwise @allanp’s friend might infer what’s going on…
  6. Wow! This is like a supercharged 8258. That crane is just insane. Very well done. Do you have a photo of the engine as well?
  7. Very nice B-model! I like that you chose to use a stick-shift gearbox instead of a 'standard' sequential gearbox. I also really like the use of wishbones in the chairs, that is inspired! The roof is a bit flat and maybe a little too wide, but given the limitations of a B-model that is really nitpicking.
  8. Jeroen Ottens

    [WIP] Pagani Huayra

    It has been a while since the last update, but I finally found time to work on this project again. I am still iterating on the front suspension setup. I lost count of how many versions I have built, but it must be dozens by now. My idea of using a linkage mechanism to control the height adjustment will not work as it takes half a rotation of the axle instead of a quarter turn which I somehow thought it was. So more iterations to follow . I'll let that lie for a while to get some new inspiration. So I moved to the back instead. I had some idea to use transpurple minifig heads for the exhaust pipe system. Here you can see them sitting in the back, just behind the rear grille. What do you think of it? I also started working on the bodywork. I am reasonably happy with the current status. The central section has a good flow I think. Also the new triangular panels in black are just made for this. The only thing is they are a bit too curved and the transition to the front end of the clamshell will be tricky. The rear grille hangs on a single pin per side, so some bracing will need to be added to fix the angles and add sturdiness. There is stupendeously little space though, plus the aeroflap mechanism also needs to be fitted in. And ideally also some meshing will be added to the big ellips gaps. Which will take again a lot of space to fix I'm afraid as nothing is straight in this section. So more nice challenges to work on . Comments, questions and critique are welcome as usual.
  9. Jeroen Ottens

    Grum's Shed

    Impressive achievement as always Grum. Seeing this is a pretty old set by now I can imagine your backlog runs the risk now of toppling over... What will be your next project?
  10. Superb looking model! I like these system/technic mixed models, even though (or maybe because) I never build in this style. Also the photographs do the model real justice, that low camera angle makes it look even more imposing.
  11. Always nice to see an accomplished builder as yourself taking on someone else's model and improving on it. Thanks for the kind words as well.
  12. I was there when it was designed. You have fold the arms and legs inwards and then roll the machine over the floor. Once it is upside down the pin on top is pressed inwards and that triggers the unfolding of the arms and legs. The inertia helps to unfold the rear leg. But, TBH, it was a fickle mechanism. Fun fact: At the time we had modded versions at the design department that used springloaded shooters in the arms that were activated when the arms swung outwards.
  13. Jeroen Ottens

    [WIP] Pagani Huayra

    @langkoThanks for the feedback & comments. I have found a way to route two axles from front to back, but ideally it should be three, to also get the spinning fans in the front (I really like that feature on your version), so still some work to do :). For now I will keep the yellow wishbones with the red shocks. I just got my copy of the Daytona, so I can see how the physics work with these stiff springs. The flex axle at the bottom of the X is based on this photo: There is an extra window above the X. I always assumed that that window is not fixed to the clamshell, but maybe I am mistaken here. I'll see if I can find a good picture of the opened clamshell. And time for an update as well: First of all I rebuild the model from the ground up based on the digitized version. Just to see whether all the steps are possible and whether the tweaks added to the digital design also work in real life. Then I started working on the front axle. Front axles are always a pain to design because the LEGO wheels are too wide (especially in the front), thereby limiting the space for the steering axle. The rotation points of the wishbones need proper bracing, which quickly results in bulky frames connecting them. The connection from the tubes on the outside of the chassis to the frame around the axle is difficult to make. And in this case I also wanted to add a driveheight adjustment mechanism and a mechanism to transfer the steering input to the two aeroflap axles. Here is a photo of three of the iterations: On the left is an early version. The steering rack is at the front (teeth upward) and a second steering rack (teeth upward) is behind the axle. That second steeringrack drives two 12T gears on the two aeroflap axles. Because the second rack is on the opposite side of the axle it has to move in the opposite way as well to avoid colliding with the wheels. I put two 16T gears inside to revert the rotation. Of course this does give a slight misalignment of 360/16/2 = 11.25 degrees. Small enough given all the play in the LEGO, but still annoying. The ride height adjustment mechanism consists of a small crank (the yellow crank from a fake engine) that can rotate 180 degrees. The lower mounting point of the spring is attached to that crank. Rotating the crank will move the attachment point 1 stud closer to the outside, which results in a 1 stud higher rideheight. With these big springs, plus the movement they have due to the rideheight adjustment there is not much room to route the steeringaxle back to the cockpit. To brace the mounting points of the upper wishbones I had to add this black 15L beam on top, which sort of ruins the look of the whole setup. So on to iteration two in the middle. First of all I realized that I could reverse the direction of the two gearracks by mounting one of them upside down. This way no 16T-16T gearing is needed in between them. I also use some angles 3-7 beams to strengthen the upper mounting points. This gave a much cleaner and tidier frame already. But the gearing for the drive height adjustment system all comes in front of the axle, which leaves then no space for the fans. Which brings me to the final iteration on the right. Here the gearing for the drive height adjustment is behind the axle, while the aeroflap gearrack is now in front. It took me a while to realize that I actually don't need a gearrack anymore, as the movement of the aero gearrack now has the same direction as the steering gearrack as they are on the same side of the axle (for the eagle eyed that still spot a 13L gearrack: that one is only used because of the perpendicular axleholes it provides). The bracing is minimized and there is enough room for the fans in front. But because of the limited space behind the axle the ride height adjustment will be operated with a lever instead of a knob. Comments, questions and critique are welcome as always
  14. I just ordered two days ago, but got the standard 5-6 weeks delivery notice
  15. Jeroen Ottens

    [WIP] Pagani Huayra

    Oops... I intended to add a progress report as well, but I totally forgot. Here is the latest stage of the design. I spent most time on digitizing the progress so far (including stepping to ensure that it is actually buildable). But I also did a bit of real-life building to work on the distinctive framework around the engine: I am not sure whether the dimensions fit inside the overall shape (I think they do), so there might be some redesigns necessary later in the process. The disadvantage of the position of the gearbox is that it completely blocks any longitudinal axles running from the front to the back at the floor level. This will complicate the aeroflap mechanism a bit and, most importantly, introduce some play in that mechanism. So that will be something to keep an eye on. It also means that it will be nigh impossible to implement working fans in the front like @langko's version. The engine currently sits a bit high, I already found a way to lower it by half a stud. This will give more room for the detailing.