SaperPL
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Everything posted by SaperPL
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I managed to make a compact version of this kind of steering that does not completely break one side of the track but sets a fixed ratio between the two tracks: Here's a video that shows a bit how it drives, but I'll make a full showcase once I complete the model:
- 56 replies
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- halftrack steering
- differential steering
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30655 Forklift with Pallet
SaperPL replied to R0Sch's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Can it reach the lowest position/pick up the pallet from the ground? It looks to me like there may be some trouble whit that. -
42148 Snow Groomer
SaperPL replied to Ngoc Nguyen's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
The difference is that, the excavator used that single wheel as a cheat to not need to pass the drive input to the wheels that have steering, while here in this set those are made because the tracks will most likely slip on various flat surfaces. The set is really cool as a parts donor though and the good part is that those small tracks will be available in even cheaper set. -
[TC22] Mini RC Tracked Loader
SaperPL replied to SaperPL's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Instructions are available on Rebrickable: https://rebrickable.com/mocs/MOC-130581 although note that I made them long after the original model was disassembled for other projects (the full studio model survived though). Sneak peek on the instructions in this short video as well: -
SaperPL's Custom Parts
SaperPL replied to SaperPL's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Yes, it's that one, it's pretty stock printer, but I've got a BL touch sensor added to it now. The print takes more time when you make the precision like this, but if you're making small parts that are critical for some mechanisms that you make just few of them, then it's worth it taking an hour or two to print those. I think that there is a newer version of Ender that has quite a lot of improvements btw -
SaperPL's Custom Parts
SaperPL replied to SaperPL's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
I print them at pedantic resolution meaning 0.12mm layer thickness. Apart from that it's just orienting parts for printing in a way that is optimal for print, but it's case by case. -
I'm not sure. I would have to back-track my whole history of MOCs to figure it out. It could've been here, youtube, discord or my local Polish LUG forum. I'm pretty sure though that I heard it from someone more experienced in making quality MOCs that you should protect the bigger linear actuators.
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I know that the small ones do have those, but I read somewhere that the bigger ones either don't have it or tend to wear out if you overuse that. May be wrong though. Thanks!
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One more cool pick, not sure why xxwassermannxx is dropping those one by one
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Yeah, I think I need to revisit this truck for myself too when I'm done with other active projects. I did some prototypes trying to squeeze in a third motor and linear actuator on a four-axle chassis some time ago: But it gets cumbersome to fit all of these. Maybe try building something like this, or a non-semi truck, something like the winged body etc? I've also built a truck that had the additional motor placed after the last axle and hub was centrally positioned, so maybe I should revisit this idea here:
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xxwassermannxx built the tractor with additional axle and shared the photos:
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@Milan / @Jim I've got a question about this, just out of curiosity: What happens if top-3 is taken by entries by Pro/medal winners and the best Regular is out of the podium? Will this mean that a person out of the podium, is winning a set but not getting a medal? Also for future reference - wouldn't it make more sense to make split voting between pro and regulars? I feel like we might end up with big discrepancies in points between pros who are all fighting for that first place and the first regular up there.
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[TC22] Wille Loader
SaperPL replied to paave's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
I like how the body is shape and how responsive it is. I would really like if you could use an integrated battery hub like buwizz or cada and cable manage this mess because it's breaking the effect of well thought out build. -
I would kindly ask to allow @Ctan to put his entry into the contest. Previously we had extensions for additional weeks when people didn't get their parts delivered, this time he was just hours late, but he did start the project thread over a month ago, so it's not like someone who came last minute and asked for extension to finish the build. And I believe we have people that started the threads just last week and even just yesterday as well which I thought is kind of against the spirit of the competition where the progress thread posted throughout the competition is required, so I really hope @Ctan can be treated with some lenience here as well. Side note @Milan - will there be a post on the main page encouraging people to vote in the contest? Like a mozaik of all first photos of each entry? - to not put focus on any of those but also pick on people's curiosity?
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Ah yes, silly me. I totally missed that part. I've had builds where I did move the steering axle away from the centre of the turntable. But still managing the hoses around it would be cumbersome so it's understandable to not go that route at this scale. Anyway, once again - great model and it seems like the competition will be really strong this time around where there's a lot of almost perfect models with just small shortcomings that you could pick on, and it'll be a hard decision with voting. Good luck :)
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The model looks beautiful - perfectly detailed, strong contender for the first place IMO. What is missing in this model is that it should be possible to turn the chair towards the back, even if only it would be made by shifting position of the backrest of it. I like the trick with driving both linear actuators on the supports with one knob although for me this way of using the half stud gears is not perfectly clean when they are on the same level in a grid. Still a really cool use of that technique. By the way - since you're not rotating the seat - why not route the HOG knob to the roof through the turntable? I don't like the idea of HOG knob being under the excavator arm.
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I liked the original boom. Using single system piece that is defining factor for some of the looks is something that Technic does in official sets. The issue was where the model went with a lot of system bricks in places where it didn't need to for the cab and engine enclosure. I can understand the decision made after Jim's feedback on this, but this feels to me like similar situation like the Red Sky from TC18 which used one windshield/glass roof piece and was awesome, where building a cool Technic model around a single or few look-defining system pieces should still be okay, as long as you don't start going for the system all around the place.
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I got my hands on some mecanum wheels that are compatible with Technic axles, although it's a tight fit. It might be interesting for those who are playing with robotic sets from Lego. The advantage over building those from Lego parts on your own should be that they are smaller and the rollers have curvature for smoother ride/more traction. I bought those on my local marketplace for ~12.99 USD a set including shipping, but there's no manufacturer packaging, only info is 48MM-K on the wheel body. Those seem to be available on aliexpress. If you don't know what those are about, here's a good explanation: My video is just a test of the wheels themselves to see if they work as the initial feel of the rollers is that they may slide, but once there is some weight put on the chassis, they have proper traction. It would make more sense to have them spread further apart like in the example forklift in explanation video and have precise control over each wheel, so four motors + powered up hub makes more sense than what I did there taking those for a first spin.
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14. Mini RC Tracked Loader Features: Skid-steer drive with two tracks (RC) Tool quick-swap plate with single locking pin (manual) Two separate tools - loader bucket and forklift forks Tool raise with two linear actuators (RC) Tool tilt maintaining angle during tool raise (RC) Spinning warning light when tilting (RC) Front access hatch for turning on the hub and USB battery charging (manual) Specs: Dimensions: 14.5 (W) x 23 (L) x 14 (H) = 4669 cubic studs (measurements frame shown in entry topic) RC: 4 x CADA micro motors (jv5043) & CADA 2.4GHz Controller Total parts : 373 Entry Topic: Photos: Showcase video:
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[TC22] Mini RC Tracked Loader
SaperPL replied to SaperPL's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Finally got time to make some outside photos for the contest entry: I'm also going to rename the topic to Mini RC Tracked Loader since I've ended up slightly off from the original concept of bobcat's straight lift arms geometry. -
Play OS
SaperPL replied to Philipp_83's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Lol, I hope they will finally hire some experienced mobile games developer to do the front-end for the controls...