Sariel Posted October 15, 2014 Posted October 15, 2014 Purists, sharpen your pitchforks ;) Many thanks to Efferman for designing such interesting elements and for support he provided. While I don't intend to use 3D-printed elements regularly, it's interesting to see the possibilities they open and the performance they offer. Who knows, maybe TLG will actually wake up and make some new pieces of their own? Photos & reading: http://sariel.pl/2014/10/dune-buggy/ Quote
Auranapse Posted October 15, 2014 Posted October 15, 2014 Pretty cool! The heavy duty diff housing seems like something TLG should make. Less likely for gears to blow up. Quote
TheItalianBrick Posted October 15, 2014 Posted October 15, 2014 I would say "nothing that normal lego parts couldn't do" Sariel, you should use that heavy dute diff in a proper heavy duty vehicle... Sorry I'm a purist.. Quote
2-Cold_Technica Posted October 15, 2014 Posted October 15, 2014 Hi EB, This is my first proper post here after several months of lurking in the background. While I am essentially a purist, it is great to see Efferman's amazing creations put to use in a great MOC. I have been watching the progress of these parts and have been amazed by the creativity. Hopefully if enough are put to use then TLG might start to review their own parts catalogue as it is becoming clear that some of their shocks, diffs, linear actuators etc. are good enough for larger MOCs and even some of their own sets (the LA's in 42009 are way too small). This is a great Hamster scale MOC Sariel, while the bounce in the rear shocks may not be great for handling and control, it still looks pretty cool. Quote
jantjeuh Posted October 15, 2014 Posted October 15, 2014 (edited) I really, really like that heavy-duty differential and the way it's assembled. Let's hope TLG pays attention. On 10/15/2014 at 12:18 PM, 2-Cold_Technica said: Hopefully if enough are put to use then TLG might start to review their own parts catalogue as it is becoming clear that some of their shocks, diffs, linear actuators etc. are good enough for larger MOCs and even some of their own sets (the LA's in 42009 are way too small). I guess you mean aren't good enough Edited October 15, 2014 by jantjeuh Quote
Lucio Switch Posted October 15, 2014 Posted October 15, 2014 I still can't decide if I like most about the buggy or the video itself ... I'm a purist (by now), some of the Efferman's parts seem to be really really interesting!! Anyway, funny Buggy!! Quote
2-Cold_Technica Posted October 15, 2014 Posted October 15, 2014 On 10/15/2014 at 12:34 PM, jantjeuh said: I guess you mean aren't good enough I guess that too Quote
Rockbrick Posted October 15, 2014 Posted October 15, 2014 not a fan of the look of the springs - but they do handle beautifully.... the diff is excellent and the 5L beams well why not - 6l 7l 8l should be available in all sizes Quote
timslegos Posted October 15, 2014 Posted October 15, 2014 I am confused as to how mounting the springs upside down changes how they handle. The force it takes to compress or stretch is the same and is based on its spring constant, right? Anyway, great looking buggy, it looks fun to drive too! Tim Quote
Sariel Posted October 15, 2014 Author Posted October 15, 2014 (edited) On 10/15/2014 at 3:04 PM, timslegos said: The force it takes to compress or stretch is the same and is based on its spring constant, right? I'm not sure, actually. They're much easier to compress than to stretch - perhaps because of how they're shaped you can stretch them much farther than you can compress them. Edited October 15, 2014 by Sariel Quote
Blakbird Posted October 15, 2014 Posted October 15, 2014 I'm finding myself both intrigued and puzzled by the heavy duty diff. While I'm sure that adding 4 spider gears will make the diff itself much stronger, the whole ring gear is still driven by a single 12 tooth bevel gear, so the weak link seems like it is just the same as it was before. Can this really handle more torque than a regular diff? Has anyone tested them to failure to find out? It seems like as long as the failure of a single bevel tooth renders the system inoperable, then the strength of the system as a whole stays the same. Quote
Rishab N Posted October 15, 2014 Posted October 15, 2014 Nice work. it's cool seeing the different things that custom parts accomplish Quote
jantjeuh Posted October 15, 2014 Posted October 15, 2014 Good point Blakbird. Wasn't the middle spider gear (the freely rotating one) in the official differentials always the weakest link? I guess the one driving the custom differential is now the next-weakest one. Quote
efferman Posted October 15, 2014 Posted October 15, 2014 i dont think that the 12 tooth, which drives the 36 tooth, is really in danger, because there is 3:1 reduction between both gears. and when the torque is to high for the bevel gear then us the spur option of the 36 tooth Quote
miguev Posted October 15, 2014 Posted October 15, 2014 On 10/15/2014 at 9:38 AM, TheItalianBrick said: I would say "nothing that normal lego parts couldn't do" How would you do a suspension with the performance this buggy got by stretching springs? I don't think you can get the same effect stretching elastic bands. Quote
PROlego Posted October 15, 2014 Posted October 15, 2014 Am I the only one to see the video in a very very very very very very bad quality? Quote
Edwin Korstanje Posted October 15, 2014 Posted October 15, 2014 Your hamster is in love . Great juse of Effermans parts . Quote
weavil Posted October 16, 2014 Posted October 16, 2014 The buggy looked great with the custom springs. Could of made a cage around the seats so the hampsterscould ride? Quote
TheItalianBrick Posted October 16, 2014 Posted October 16, 2014 On 10/15/2014 at 7:56 PM, miguev said: How would you do a suspension with the performance this buggy got by stretching springs? I don't think you can get the same effect stretching elastic bands. I assume you didn't read Sariel's words then! Originally the springs were designed to work as a normal compressed springs, but as they don't do their job well, Sariel had to invert them and use them as "extended springs". It's just a casuality, plus you can really use elastic bands if you want to! happy days... Quote
Rockbrick Posted October 16, 2014 Posted October 16, 2014 stretching these springs makes them behave linearly compressing them, well they just pop sideways all of a sudden they would need two pin holes at each end to stop that or enclosed somehow Quote
miguev Posted October 16, 2014 Posted October 16, 2014 On 10/16/2014 at 6:35 AM, TheItalianBrick said: I assume you didn't read Sariel's words then! Originally the springs were designed to work as a normal compressed springs, but as they don't do their job well, Sariel had to invert them and use them as "extended springs". It's just a casuality, plus you can really use elastic bands if you want to! I did read his blog post, but I don't think elastic bands would behave that well. Quote
TheItalianBrick Posted October 17, 2014 Posted October 17, 2014 (edited) On 10/16/2014 at 9:11 PM, miguev said: I did read his blog post, but I don't think elastic bands would behave that well. Off course they would not! but if you create I nice linkage and connect it with rubber bands you can come very close to. Plus, who said we necessary need to imitate or come closer to those "inverted springs"?? According to your way of thinking we shoudl use real OHLINS shock absorber in our mocs...just because they are the best in world! I think we should take the challange of building what we can with what we have....... otherwise imagine if a RC model maker uses some LEGO parts in his world. LEGO is LEGO, then there is the rest....why do we mix them? No hard feelings my friends.. Edited October 17, 2014 by TheItalianBrick Quote
legomuppet9 Posted October 17, 2014 Posted October 17, 2014 On 10/17/2014 at 6:45 AM, TheItalianBrick said: Off course they would not! but if you create I nice linkage and connect it with rubber bands you can come very close to. Plus, who said we necessary need to imitate or come closer to those "inverted springs"?? According to your way of thinking we shoudl use real OHLINS shock absorber in our mocs...just because they are the best in world! I think we should take the challange of building what we can with what we have....... otherwise imagine if a RC model maker uses some LEGO parts in his world. LEGO is LEGO, then there is the rest....why do we mix them? No hard feelings my friends.. People are testing parts which have been custom made to make their MOC's better, they are clearly not a purist like you in doing this, I too am a purist however, I do like to see how custom parts can transform an MOC Quote
z3_2drive Posted October 17, 2014 Posted October 17, 2014 I mix them...because it's fun Great buggy, Sariel, though I'd like to see a version with buggy motors Quote
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