SaperPL
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Everything posted by SaperPL
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Oh, I forgot to post my recent truck here, I think :) I made a compact Euro semi chassis few months ago: Instructions: https://rebrickable.com/mocs/MOC-90482 (Semi Tractor) https://rebrickable.com/mocs/MOC-91111 (Red Technic Tractor) https://rebrickable.com/mocs/MOC-90484 (Box Trailer)
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It's possible - I started a thread on our local LUG forum before the video launched publicly (I linked it as unlisted video) and I have seen situations where my unlisted video was already been viewed. Seems like tags work for search on an unlisted video...
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I launched the video and made this photo they used on Tuesday, so it couldn't been a week ago. And the topic was already there since they have linked to it. Maybe you couldn't see it on the first page because there were more topics active at the same time.
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Just noticed that it got featured on TLCB
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Yes, that is if I wanted to make it fully accurate, then the rear axle should be shifted by one stud back. I ended up with how it is placed now because of the chassis structure and that I like the feel of the ladders being right in the middle between front and rear axle. Also with that said, I usually don't put that much weight on the model being 100% accurate, rather than having a good composition and looking good.
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Thanks guys! I'm glad you like it :) It'd be really cool if it were like it, but it doesn't seem to be the case from what is there on the photo. I think the Lego set is going to be more robust/kid-proof Thanks! I wish that was true, but we can clearly see that Lego is dumbing down those lower tier/smaller sets. My models show what you can do at this scale, but it's not what's optimal for a money making machine, so those smaller sets have less functionality, sadly. It makes sense to me to let people watch the build process if the model has some cool building techniques because not everyone is going to build with instructions. But not all models are like this and also capturing some of them is tricky with camera between my eyes and my hands. One of the core reasons for this build was to use those :) Check out my other models on rebrickable in the meantime, you may like some of them enough to build them if you love the compact models :)
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[MOC] MAZ 5316 RC
SaperPL replied to Danifill's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Another neat model, the only things that I would pick on would be the buggy motor sticking out at the back and the wheel pivot at this scale is not ideal - I know it's for robustness and portal axle gearing, but still this isn't ideal. Great build nevertheless :) -
The project started long before the reveal of 42136 John Deere set, but I wanted to make the front steering with custom 3D printed parts initially and I got stuck on the 3-point hitch/PTO mechanisms, so it was sitting on the hard drive for few months. After figuring out how to make the 3-point hitch mechanism I realised I can make the virtual pivot steering and picked up the designs again around a week before the 42136 was revealed. The trailer however was clearly inspired and initially based on the trailer from the photo of 42136. The rotary rake uses PTO at the back which is integrated into 3-point hitch, but as there is not much room to fit a clutch anymore, the rotary rake is disconnected by folding it's sides up instead of disconnecting the PTO on the tractor's side. There is also a PTO at the front underneath the bumper, but I haven't figured out an attachment for it yet. Full gallery: https://imgur.com/a/dyCV5qL Video featuring speed builds of each part of the set and functions showcase: Instructions are coming, I just didn't make it with time as I didn't expect this project to grow this much with the implements. EDIT: Instructions for the tractor are online: https://rebrickable.com/mocs/MOC-97150 EDIT2: Instructions for rotary rake are online: https://rebrickable.com/mocs/MOC-97247 EDIT3: Instructions for the tipper trailer are online: https://rebrickable.com/mocs/MOC-97357
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Amazing b-model. Good job!
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You mean because it won't fit or because the Lego wouldn't do it for such small scale set?
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Do you have an example where I can find this kind of construction? The issue with simple levers is that the action will be fast and may potentially require a locking mechanism.
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Apart from oh-god-why is it upside down... I tried to build it today and the mechanism in your assembly won't really work. There's not enough leverage for the linear actuator to raise the bed and also the pivot point is in a place that the end of the bed will quickly get stuck on rear wheels. I've figured out my own trailer for the tractor I'm building that is heavily inspired by the shape, but my mechanism isn't even close to that photo. I'm thinking that maybe there is another idea behind the mechanism on this trailer - like it's not raising the bed, but putting it down behind like a container/sliding it backwards?
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Apart from the trailer, is there maybe anyone crazy enough to try and reverse-engineer the tractor itself from that one photo? Like figuring out from the shape of the front if it's possible that it may have the piston engine inside, diffs, all wheel drives or only the rear etc?
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For reference - you did better job than Lego xD
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The issue is that I expected it to work in a way that if you just touch the teeth, it'll slow down the rotation a bit and if you clench it/sqeeze it, you'll stop, but I guess without a big chunk of load, the red gears on friction pins won't turn. To have something that'll slow or stop it, I'd probably have to actually build an rc model that would need to pull itself, but it's pretty hard to showcase this as good as in place.
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Good point, I haven't thought about that - with spring loaded mechanism, it would be easy to make things that don't work 100% correctly all the time and manual assembly allows for some leeway.
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My whole point is that if someone can manage to make the transformation based on shock absorbers and rubber bands, then he could be able to enter without motors. Sometime ago someone told me that as a kid he was building exploding cars that had been made in a way that once the axle coming out of the front bumper was pressed in, the car fell apart, and this is kind of approach I was thinking about - if you can make a model that completes the transformation on its own if you remove the lock from it, we could have more entries from people who don't have RC pieces.
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@Jim - I know I'm a bit late to the party with this note, but I'd consider allowing the transformation to be spring loaded (shock absorbers, rubber bands and pull-back motors), instead of requiring a powered motor as long as the whole transformation happens by single action (button press, removing a locking axle etc). Motor requirement may be reducing the number of contestants. With that said, I'm going with RC myself, so it's not like advocating for my own entry to be clear.
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Great model, actually something that I would really see as a B-model for this set from Lego. There's barely anything to pick on with this model, the only weird thing is battery/hub placement, butt with hard-top on it's well disguised and again, since this is better for the ergonomics, I guess Lego would do things like this too. The chassis is beautiful and I like the separate body with this modular approach. Great job!
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Under one of my previous videos about braked differential steering, someone noted that I have oversimplified the mechanism, and that it wasn't how it worked in WWII tanks. Actually he was right as I misinterpreted the attachment point of brakes in Sherman Tank differential documentation. So I did a thing to show how a correct realistic WWII braked-differential steering would look with Lego Technic: Sherman Tank differential documentation: http://www.theshermantank.com/about/the-sherman-tank-powertrain-page/the-sherman-differential-normally-just-lumped-in-with-the-final-drives-but-not-here/
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Yes, I completely forgot about it as you've built it some time ago. Thanks and I'm glad you like it :)
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SaperPL's Custom Parts
SaperPL replied to SaperPL's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Sure, but you're kind of getting into CV-joint territory with this, except CV joint has terrible angle of operation. -
SaperPL's Custom Parts
SaperPL replied to SaperPL's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
STL files for printing: https://www.thingiverse.com/thing:5102079 -
Artemisovsky built the crane with some modifications: More photos here: https://rebrickable.com/mocs/MOC-72143/SaperPL/mini-mobile-crane/#photos
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So we did a thing with @Danifill And we've got instructions for the PF/Buwizz and mostly Technic cab variant: https://rebrickable.com/mocs/MOC-91111