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Didumos69

Eurobricks Dukes
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Everything posted by Didumos69

  1. Didumos69
    A few months ago I posted about a compact knob gear axles with drive and Ackermann steering. A major drawback of these solid axles is the fact that the wheel hubs are mounted to the vertical drive axles. This causes quite some friction. To fix this I replaced each of the the vertical 5.5L axles with stop by two half pins to mount the wheel hubs and a 2L axle for the knob gear. This way the knob gear can rotate freely. I tested this and the drive setup operates way more smooth while the whole setup remains to be equally robust. Before: After: LXF-file here.
  2. Didumos69
    Like a few others I care to differ. The difference is that there will be a public interest in pdf being around that goes further than just having aged pdf-based BIs available. There won't be much public interest in your personal copies 30 years from now, unless they are rare, but that would also indicate they are above all ephemeral.
  3. Didumos69
    I love it already! Although I think the chassis is a bit flat in front of the seats. Would be nice if you could incorporate some lengthwise beams that serve as a kind mid-console adding extra robustness. But that would not be realistic and perhaps the body will add enough stiffness. The suspension looks really neat! Btw, I like the prefix [scale].
  4. Didumos69
    Can't you simply continue by examining the whole 3D model? For instance like this: In LDD make a copy of the whole model and put it next to the original model. Remove parts from the copied model until it resembles your current state. Be sure to remove parts in a way that could be performed in real life too. Sometimes you remove a few parts at once, because they can only be properly removed together and sometimes you remove one part at a time. Imagine this to be the same as carefully dismantling a real life finsished build. When this is done you can undo (Ctrl-Z) all removals step by step and perform the same steps in your build. Sometimes you may need to redo (Ctrl-Shift-Z) and re-undo an individual removal a few times to make sure you got it right. Continue this untill the copied model - and your real life build - resembles the original 3D model. This is how I work with my own 3D designs when I build them from scratch.
  5. Didumos69
    Masterpiece! I enjoyed each and every photo and every second of the video!
  6. Didumos69
    Thanks, but I was aware of that. The problem is that in most of the links the comment part of the link has disappeared, so I don't have the comment numbers anymore. It will be quite a hassle to find back those numbers for all those links .
  7. Didumos69
    First of all I would like to say I appreciate the effort you moderators and admins put into this site. I'm not unhappy with the new setup and I also like the responsive design. There is one problem I'm running into though. I'm used to adding links to other posts (looking something like: 'www.eurobricks.com/forum/index.php?showtopic=133743&st=50#entry2579365') when this is useful. Now it appears that all links to other posts that I have made have automatically been shortened to the topic part of the link (for the example above: 'www.eurobricks.com/forum/index.php?showtopic=133743'), as part of the upgrade I suppose. To recover these links I have to actually search for the posts I was referring to, because the entry numbers (of the actual posts) have vanished. This will be an awful amount of work. I can hardly imagine that this can be fixed automatically, because the information needed is no longer there. Is that the right conclusion or will this be fixed when all background scripts have been executed?
  8. Didumos69
    Of course!
  9. Didumos69
    You have a point. Although my son is taking advantage of simple instructions right now and in general simple instructions may appeal to a wider audience, there is certainly something to say for challenging instructions too. Brings me to another idea I had some time ago. Would be nice if LEGO offered a LDD-file for each model so people can build from LDD instead of from BIs if they want a real challenge. Building from LDD requires you to find your own building path, which can be very challenging.
  10. Didumos69
    I completely agree and have the same experience with my 6-year old son. He builds Technic sets (42037) all by himself because of the clear and simple instructions. And I truely believe it will give him some braintraining that might come in handy one day.
  11. Didumos69
    I work with pdf rather than paper. I stored the Porsche book together with the box somwhere where it won't get damaged and I built the Porsche with the laptop close by.
  12. Didumos69
    I tried but I can't get the Moto Cross Bike tire (11957) straightened inside the 94.8 x 44 R Balloon tire (54120). It's too big
  13. Didumos69
    That should be 100mm diameter of course.
  14. Didumos69
    I think not, because that tire has over 100mm radius, but I'll try and let you know.
  15. Didumos69
    So apparently inserting tire foam can serve the same purpose. I suppose you mean with firming them up it actually reduces the constant reshaping of the tires.
  16. Didumos69
    I think so too. It will prove very hard to add tire pressure by filling the tire with soft material. And if it doesn't add tire pressure it will probably only add friction as the reshaping under the vehicle's weight will absorb more energy. I know a little bit about off-road bicycle tires. The best performing tires are tires that absorb the least of energy while reshaping. Such tires - usually with a thin treat - can be ridden with low pressure with a relatively small performance drop. This is very convenient on gravel-like surfaces.
  17. Didumos69
    Fits the tractor unit perfectly. Let me guess, tomorrow you will be posting about the excavator?
  18. Didumos69
    I only count 12, where are the 4 secret springs ? All axles look very sturdy. If I understand correctly the rear axles are mounted to the chassis with springs only. The setup might give some stress on the drive axle between the two rear axles when the suspensions are not compressed equally. I also like the front wheel archs. Would be nice if they could somehow be mounted to the chassis or cabin at the backside too. Still I think this is a very nice and good looking build!
  19. Didumos69
    A very nice model and thanks for the introduction! I cannot really judge the motorization, because I that's not my expertise, but for the rest it looks very well done! I also like the fact that you used your imagination instead of trying to build an existing model. You don't see that very often with this kind of realistic builds. Did you also use shockabsorbers for the suspension? Would be nice if you could post some closeups of the suspension and the steering.
  20. Didumos69
    If the idea is to avoid the 44772 or 15038 rim from slipping inside the 54120 tire, then this could be an option too:
  21. Didumos69
    As a matter of fact it does! I just checked and I managed to rotate the rim in the tire without having the motor tire inserted, which required quite some torque though. After inserting the motor tire I was no longer able to slip the rim inside the tire. I think the explanation is that the motor tire expands the balloon tire slightly - diameter increases by approx. 3mm - which causes the sides of the tire to be pulled inwards slightly. This in turn causes the edges of the tire to induce more grip on the edges of the rim.
  22. Didumos69
    Good to know! There are probably more ways to fill the tire with soft LEGO pieces. What I like about my solution is that it only adds extra tension to the tire, as if it was filled with more air. The effect is constant over the entire tire and still allows for some reshaping. Thanks! To be honest I have been looking for the right third party tire first. This solution has partly to do with all the images not showing in the third party tire thread right now . What I like about this LEGO balloon tire is that it's contact surface is a bit curved, just like you see with bias-ply tires on classic cars. Such tires may not be very realistic these days but it does allow for a perfect operation - or demonstration - of the active camber angle incorporated in the Steppenwolf suspension. A hard tire with a flat contact surface wants to stay flat when you compress the suspension.
  23. Didumos69
    Maybe there's some info on that here:
  24. Didumos69
    It's certainly worth trying. After playing around with them on a flat surface for a while I noticed they ride a lot lighter too, with far less resistance. You could compare it with more tire pressure. I can imagine this could also be of use for RC trial trucks to avoid these tires from severe misshaping under heavy circumstances, causing them to run off the rims completely.
  25. Didumos69
    My experience with the LEGO 94.8 x 44 R Balloon tires (54120) is that they are quite sloppy and noisy. I use them for my Steppenwolf, which weighs a little more than 2kg, that's about 500gr per tire. When I move the vehicle around I can hear the tires reshaping and refitting all the time. It makes a strange grinding noise which I find quite annoying. A pure Lego way to make them less sloppy is to insert a LEGO 94.2mm D. x 22mm Motorcycle Racing Tread tire (88516) as a kind of inner tube. It adds extra tension to the tire, as if it was filled with more air. The effect is constant over the entire tire and still allows for some reshaping. After playing around with the tires on a flat surface for a while I noticed they ride a lot lighter too, with far less resistance. I can imagine this could also be of use for RC trial trucks to avoid these tires from severe misshaping under heavy circumstances, causing them to run off the rims completely. EDIT: As a nice side effect, this solution also prevents the rim from slipping inside the tire, something that has actually been reported for this tire. The motor tire expands the balloon tire slightly - diameter increases by approx. 3mm - which causes the sides of the tire to be pulled inwards slightly. This in turn causes the edges of the tire to induce more grip on the edges of the rim.
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