Jeroen Ottens
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Everything posted by Jeroen Ottens
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Very smooth operating functions , I like that. The roof mechanism is ingenious. When the suspension is lowered it effectively ceases to exist, right? I really like where this is going -
As I wrote before, this car has been an absolute delight to build and design. It was a huge pleasure to do. And I have to thank Grum for making this endeavor more than 'just another car' design, his suggestion to make this one for charity, his feedback on the design process in the past 11 months, his ability to get the extra drawings from Pagani himself and his efforts to spread the news of the auction across the web have made this all as succesfull as it turned out to be.
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Grum's Shed
Jeroen Ottens replied to grum64's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
This is because there are two non-aligned U-joints leading towards that straight axle. And the input is before the non-aligned U-joints. -
Grum's Shed
Jeroen Ottens replied to grum64's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
You are on a roll my friend. And I hate to bring it to you, but @Johnny1360 is right about those U-joints... The angular motion of the straight axle will be ever so slightly non-uniform. Luckily for you you made the mistake on both ends of the axle, so it is only the middle part that is not moving perfectly. So I'd say, no harm done this time -
Thanks for mentioning this, i filed a copyright infringement complaint again.
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Grum's Shed
Jeroen Ottens replied to grum64's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Jummie. I never bought this model myself as it just didn't spark my joy at the time. I thought it was just too much beams and too little gears. But seeing it evolve makes me almost regret my decision. It is a really nice build after all. Thanks for sharing. -
I was not. Thanks for pointing this out. It is quite amazing, since I had them taken down already once two weeks ago... They risk losing their entire site as a repeat offender...
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Something like this? Thanks
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Ouch, that hurt... I thought/think I had captured the essential lines, but of course I may be a bit biased here. Here is another view that shows how the lines flow from back to front: I agree on the roof being flat and the A-pillars being steep. I wanted the roof to be so strong (and formlocked) that you can lift the car with it. Which is possible, with hardly any flex in chassis. But that stiffness comes with the price of using straight beams in the roof and the 9L links for the A-pillars. I could have chosen looks over strength here, but for me that would have been the wrong compromise.
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Wow! That thing is a beauty. It looks solid, intimidating almost. I really like the tidyness of the bodywork. Normally I am not a fan of using lots of parts to fill the holes, but in this case it really works. That 3-section boom looks amazing. And as a sucker for function heavy models: this one must be packed on the inside
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Thanks everybody for the feedback. @Erik Leppen: The black vs white makes it hard for me to photograph it. I either overexpose the white or loose detail in the black . I'll be moving to a new house in a few months in which I will get a bigger workshop with a proper lighting setup for the photographs. Hopefully that will help. I agree that it is a bit too dark. In fact, there is a rather subtle curve in the rear diffusor that is now completely invisible in the photos . The chairs are operated with the 12T gears behind them (you can see them quite clear in the engine shot). For me the looks of the Huayra took time to get used to. At first I didn't like it too much with the steep nose and windscreen, but it has grown a lot on me since then. @Lox Lego: Thanks for the kind words. I agree that the exposed holes in the front are a bit distracting. I tried covering them up with tiles, but that also didn't look right, so that's why I opted for the bare-bones technic look. @Meatman & @Lox Lego: Showing a gearbox in a manual model is bit difficult with an engine that is completely covered. It is especially hard when you don't want to see any hands in the video like I do (I made that a rule for myself). So in the end I dropped that function from the video. To be honest I also don't know how I got all the functions in. During the design process everything just sort of fell into place. The aeroflaps for instance where pretty late in the process added (even though I knew that I wanted them in from the start). I looked at the chassis at that time (which already had the gearbox, the chairs, the suspension setup and the adjustable rideheight in) and there was a continuous line through the underside of the car that could be used to route two axles through (on either side of the car). The most difficult part of that was the lever mechanism at the back. It has an extra cantilever there. @efferman: Thank you for the design of the rims. Now you know where they are for
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Hi, As some of you have guessed correctly it is indeed a Pagani Huayra. It has a BC livery: Since I have said most about it I'll just let the photos speak for themselves: of course there is also a video: The actual auction will start on April 19th on Catawiki
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Looking good indeed. as for tips: I would keep the red 8L axles black and try to replace the black connector to which the red flexaxle fits red. This will give a more continuous line. I don’t know what the exact arrangment of the gears in the linear actuators is, but if it is possible to move one of the bevelgears to the other side of small LA it will make the two LA’s move in the same direction. Good luck with the last part
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Final features before the reveal: Gullwing doors and aeroflaps at the front and the back of the car. The gullwing doors have spring mechanism that locks the doors in place when opened and when closed. The aeroflaps are operated when the car is steering. When you steer left the left flaps move up. When you steer right, the right flaps move up.
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@Pvdb: The next feature will give you a clue on the era of the car. The front wheels are equipped with a ride-height adjustment mechanism. It is controlled from the dashboard with a 12T gear and it uses another kneejoint mechanism (using the crankshaft piece) to ensure that the forces of the suspension are neatly led directly to the chassis and not as a torque in the adjustment mechanism's axles.
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Not only is the model going to be auctioned. Grum also reached out to the manufacturer to ask if they would like to sponsor the auction. They responded by sending us two 1:2 scale computer drawings of the actual car. Signed by the designer himself... The little scribble on the right of the drawing is part of his signature. Feature of the day: opening trunk. Also with a kneejoint mechanism similar to the hood.
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As any technic supercar this one has independent suspension on all wheels. It is not a conventional double wishbone with a spring in between though. Instead front and rear suspension is done with cantilevered springs. This way the springs are brought more inside the car and the bodywork can sit closer to the wheels. The rear diff is an old style diff because that is just a little lower than the new ones, plus it made it easier to mount the gearbox transversely, like in the real car.
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Absolutely amazing. That video must have taken you the better part of a day to shoot. But it is totally worth it. The segments look already quite optimized for stiffness & weight. I'll be interested to see what solution you come up with to improve on that.
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Big bad beastie Very nice. I always appreciate gearboxes over many motors
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Since I'll be away this weekend here are two more features: This model features a 8D-N-R sequential gearbox. The shifter mechanism can be moved left (R), middle (N) and right (D). When it is right (D) you can also move the shifter forward and backward to shift up and down. There is also a HoG gearshifter. The stepper mechanism is based on the improved Porsche mechanism of @Didumos69. Those who think they know which car it is already also can check that the actual number of gears is incorrect. The gearbox is connected to a highly detailed V12 engine with a system-bricks based crankshaft and axle-pistons (same size as the Mack and the Corvette).
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So, time for the next clue: The two seats are adjustable. There are two 12T HoG's located behind the seats that operate the seats, so they can move forward and backward and tilt the rest.
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@Didumos69: Nope, no Corvette So, let me help you guys a bit. I'll release a feature of this model every other day until someone guesses the right make and model. I'll start with the most common features and end with the most special ones. Feature 1, not surprisingly : opening hood It is worth mentioning that the hood has a knee-joint mechanism, so that once you open the hood it automatically stays open until you push against the knee-joint to release it. And I think the hood is called a clamshell hood, allthough I wouldn't know what the exact definition is of a clamshell hood.
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Let me chime in from my side. Over the years I really enjoyed the 'ramblings' of Grum, but even more the positive and cheerful attitude to life that are shining through his posts. When he finished the BWE I decided I wanted to give something back that was more than just another encouraging post. Hence my offer. I already suspected that he would decline my offer, as he did. But my stubborness on this matched his when he is plowing through his builds. So we ended up in a compromise where I would build something for charity of his choosing. The model was an absolute joy to design. It has been one of the most satisfying designs I have ever done. It is packed with features and then some and it is highly detailed. To say I got carried away with this design is bit of an understatement, but I loved every minute of it. To give you a taste what is on the table you can watch this short teaser video: Leg godt, Jeroen
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Grum's Shed
Jeroen Ottens replied to grum64's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Another great build. I enjoyed reading your progress reports like always. I did the pimped v0.something with only the gearbox fix, so it was nice to see the current state of the pimped version. And 60 hours... That is a lot of determination.