Hrafn

Eurobricks Knights
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Everything posted by Hrafn

  1. Hrafn
    This is brilliant, thank you for sharing it! I'm totally going to use this for an AWD rally car of my own.
  2. Hrafn
    For some reason, I really want to see this mounted to the front of a low-slung supercar.
  3. Hrafn
    Very clever! I wouldn't have thought of doing a scissor bridge, and I'm very impressed with its strength.
  4. Hrafn
    It's possible that part of Lego's deal with TRU and Walmart is that S@H won't offer sets that aren't being made available to the brick-and-mortar stores. Maybe the 2013 sets were designed by GM and they're fixing some bugs...
  5. Hrafn
    That looks very useful, thank you! Is there any chance you could post a copy somewhere other than MediaFire? It has a bunch of dodgy-looking pop-unders and seems to be somewhat unsafe.
  6. Hrafn
    Great job! I really want one (well, three) of these now.
  7. Hrafn
    Ah, OK, that makes sense. f you can keep it compact by eliminating the spur gears, that would be awesome.
  8. Hrafn
    That looks great! Is there any reason you've only chamfered the corners on one side? How long are the helical gears - 2L? How would you drive the differential frame? Every illustration of a Torsen diff I've ever seen also includes spur gears - the paired helical gears mounted to the diff frame don't mesh directly. Your version seems to make more sense, but surely there's a reason that the real-life ones add spur gears.
  9. Hrafn
    Piterx has a couple of designs, both partially described in the forums here. The first was for his Lancia Fulvia; the second was for his Pajero Pinin. I can think of at least one other approach, but can't find the link to it now; basically the designer used the classic 4-speed Lego gearbox and coupled the tops of the gear selectors with a 6571: . He then used a series of cranks to activate the selectors in sequence; the 6571 ensured that when one selector was thrown, the other one would return to neutral. I realize that's not the clearest explanation but hopefully it gives you some idea.
  10. Hrafn
    Both of those look great! I hope the first ones are strong enough to withstand meshing forces. The helical gears look great, too! The guy who made the other helical gears you linked to has used them in a Torsen, but it still looks a bit larger than I'd like. It may not be possible to go much smaller, though.
  11. Hrafn
    That's very clever! I wouldn't have thought it was possible in that scale.
  12. Hrafn
    Hey, this is the Technic forum! The payload is clearly Classic Space, from the color scheme and boxiness
  13. Hrafn
    I'd love to see parts for a true Torsen differential using helical gears.
  14. Hrafn
    The number (36 or 34) should refer to the width of the tire in mm. EDIT: The letters (more or less) match the speed rating on real-world tires. The tires with the same letter also tend to have very similar tread patterns and aspect ratios (height/width ratio); the one exception is the Unimog tires, which are "R" but are narrow with a tall sidewall and truck-style flat tread. Confusingly, not all tires have the letter in their Bricklink description. R: 170 kph H: 210 kph VR: > 210 kph Z: > 240 kph ZR: apparently the same as Z for real-world tires R: H: VR: Z: ZR:
  15. Hrafn
    I do like those wheels, but they might be too small for this MOC. The 68.8x24 would have the right diameter and sidewall, but they're rare and expensive :(
  16. Hrafn
    Would either of these work better? (wheel 68.8 x 36 H) (68.7 x 34 R) I think what you're using now is (68.8 x 36 ZR) All of these tires have similar outside dimensions so hopefully you could swap them out easily. The top two will look smaller, though, since they're balloon tires instead of racing slicks. The Bricklink page I used to find them is here, and Sariel also put together a page on wheel sizes here.
  17. Hrafn
    Perhaps they should use it for that - it's been an issue for NASA before.
  18. Hrafn
    Such an extraordinary attention to detail! This is a stunning build aesthetically, and the functions are great. I love the pushrod (?) steering.
  19. Hrafn
    All the way down! I wonder how fast this would go with RC motors (and suitable shielding to prevent the splashing water from shorting them and the RC unit out).
  20. Hrafn
    I stand corrected. Very cool! I'm sorry to hear about your hamster.
  21. Hrafn
    What, no hamsters? Seriously, though, this is really neat. I like the extending tracks in particular. Not realistic per se but novel.
  22. Hrafn
    Excellent! I really like the way you made it modular and paid so much attention to how the chassis looks, even though it's not visible when the bodywork is attached. I'd love to see more detailed photos of the door hinges to see how you solved that challenge.
  23. Hrafn
    Great work as always! I'd love to see more detail shots of the finished gearbox and selector mechanism. Has it changed much from your initial prototype?
  24. Hrafn
    Or the angled beams (which are at atan(3/5) or about 53.1 degrees) or the tri-liftarms (and wedge belt wheels) at 120 (and 60) degrees. 1/2 stud offsets aren't too hard either. Studs are 8mm, but bricks are 9.6mm tall and plates are 3.2mm. Between all of those tricks, I've found good meshing geometries for most gear pairings and have candidates to try out for some of the others. Whether these solutions are practical is another matter...
  25. Hrafn
    Haha, nice! Excellent climbing angle you have there. I hope the pilots take their motion sickness pills though!