Superkoala

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About Superkoala

  • Birthday September 22

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  1. I actually appreciate your topic @Jim. I come almost everyday to read Eurobricks but unfortunattely I don't post very often (I will post something soon) so I didn't really see the issue growing. Just to share a short story with the community. Some years ago, when I started again to build LEGO Technic I was posting only on a national Lug (I'll let you guess which country/Lug it was). The problem of this Lug is the totally toxic atmosphere. The entire Forum is under the reign of ten members, in particular admin and moderator that destroy everything that do not please them. They are some of the greatest Technic MOC builder, but split/puke/p°°p on people that are not as good as you is a cultural thing. So the only comment you can receive if you are not from the gang is: "It's bad", "I could have done better", "you souhld have improve it before posting", "do better next time" blablabla. Don't expect anything positive of constructive. And this, kids, is why I came on Eurobricks. And to be honest this community is really great.
  2. Superkoala

    Atlas Copco Minetruck MT85

    This is soooo cool! Thank you very much
  3. Superkoala

    Atlas Copco Minetruck MT85

    Hello Jim, Thank you for your message I have added an additionnal initial image to the first line, which wasn't in the original post, don't hesitate to tell me if you need anything else.
  4. Superkoala

    42100 Liebherr R9800 Excavator

    Not a real surprise but I'll it take anyway. The harder part will be to decide which one built first.
  5. Superkoala

    Atlas Copco Minetruck MT85

    Thank you all for your messgae. A quick feedback on the tires topic, after some check, yes mywheels are 81.6 mm and not 94mm, but I will anyway try something with Bricklink's Studio software to use 81.6 mm wheels from old 42000 Formula one set. In fact the steering of the rear wheels is not the problem, the problem is the articulation taht can't reach an angle large enough. I maybe should have used Large Linear-actuators instead of mini ones (a this should be tottaly possible at a larger scale with the Unimog wheels)
  6. Superkoala

    Atlas Copco Minetruck MT85

    I clearly recommend you to get one Buwizz if you only make "simple" MOC (aka not more than 4 function). From my point of view it's the most compact/easiest/powerful way to work. (Also there is sometime special offer directly through Buwizz.com but I haven't seen one for some time now)
  7. Superkoala

    Atlas Copco Minetruck MT85

    You know what ? I was sure they were bigger. But as I doubted I just verified via Sariel's chart. I guess it deserves a try with some picture
  8. Superkoala

    Atlas Copco Minetruck MT85

    Yes I did, my first try was with those tyres but the scale didn't please me, I didn't wanted to make a super large truck.
  9. Atlas Copco Minetruck MT85 - powered by Buwizz The MT85 was a prototype of a 85t truck built by Atlas Copco, which could have become the world’s largest articulated underground mining truck. It was presented in MINExpo Las Vegas in 2012. The truck was articulated at a maximum angle of 40° and has a rear steering axle. Unfortunately, the prototype never came into production and very limited information and pictures of it are available. Even Atlas-Copco website no longer has a dedicated page of the MT85. The MOC Design The MOC is based on the design of the initial prototype. We have so a 6x6 low profile articulated truck. A tiny cabin with an opening door and a seat can be found on the left side of the forward part. The center is mostly occupied by the engine hood. It is not very detailed but hides 2 of 3 motors used in this truck. Forward axle is rigid (no suspension) and equipped with a differential. The articulation is built around a steering ball joint, it accommodate the axle for steering and propulsion. The technical part of the truck is located at the front part of the rear chassis. Here are installed the 3 mini linear-actuators for steering and the motor for tilting the tipper. Rear part of the main chassis accommodates the two rear axle (1 fix the other steering) both equipped with a differential. The tipper support is fixed at the rear end of the chassis. The tipper is a separated part simply clipped on its support; it is a technical choice here to ease the access below. It has a low profile like on the real truck and a rear opening door. Functions There is only 3 functions in this truck. The first one is the propulsion. It is performed through a PF-XL motor installed in the nose of the truck. The reduction is 3:5 and it powers all 6 wheels. Second function is the steering, divided in two parts: articulation and rear axle, both powered by the same PF-M motor installed above the forward axle. The articulation is actuated by two mini linear-actuators. The steering of the rear axle is actuated by a third mini linear-actuator installed under the belly of the truck. It slides a series of beam back and forward that creates the rotation of the rear axle. Third and last function is the tilting of the tipper, combined with the opening of the rear door. Tilting is actuated by a single Linear-actuator powered by a PF-M motor. The opening of the door is “simply” done by two string linked to the chassis. All the functions are powered using a single Buwizz brick. For this MOC the it was the best compromise between the number of function. (Note: This post is a partial copy-paste of the complete article on my website https://superk-technic.com/minetruck_MT85) Thank you for reading
  10. Superkoala

    Sandvik Toro 60

    To be honest I got a bit lost with the official denomination between Tamrock and Sandvik, I also had this issue with the Supra/TH680 (which is currelnty having a big upgrade, I should post it here soon). Oh and what a chance: the MT 85 is my actually the truck I started to work on last week-end :)
  11. Superkoala

    Sandvik Toro 60

    Thank you :) On my first attempt back in november I managed to make some sort of suspension using small pneumatic jack, but the chassis was too weak and bended a lot. Wasn't happy with that.
  12. Superkoala

    Sandvik Toro 60

    Hello Eurobrick, It’s been a long time I haven’t posted here, for many reason. Now I’m back to Lego, let me present you my latest MOC, a Sandvik underground mining truck. (Please note this review is also posted on my own website Superk-technic.com) The Toro 60 is a 60t truck buit by Toro/Sandvik. It is a new approach of the underground mining application, by using a rigid frame truck instead of an articulated one. This allows to have a larger payload for a similar size truck. The Toro 60 is 6×4 truck, with a steering rear axle allowing to take sharp turn in gallery. Here is a presentation video of the truck. The MOC: This MOC is a simple reproduction of the main function of the real truck, as well as a cosmetic challenge to reproduce its unsual aspect. It is not mounted on suspension because I’m lazy because the rear steering-driven axle was a huge mess to create. And also because I’m lazy. It is powered by a Lego rechargeable battery and a SBrick bluetooth controller. All images are available on FLickR Propulsion. Axle 2 and 3 are powered through a PF-L motor. It was the best compromize between compacity and power. It fits well in the chassis between the two axle, but unfortunately there is a little lack of power for the outside run. A PF-XL motor would have been a better choice, but harder to integrate int he structure. Steering. The front axle is a classic Ackerman steering, and the rear axle is rigid and mounted on a turntable, like the real truck. Both axle are powered by a single PF-Servomotor. If you already played with a large turntable you should have noticed that if you gear directly a PF-SM on it your turntable isn’t straight, it has a slight angle. To compensate that, I geared the control axle with a 16t/16t: there is no onger an angle but it reates some slack in the direction. Tipper operation. On the real truck the tipper is actuated by to large and very (very)(very) long hydraulic jack on the forward part of the tipper. This kind of part doesn’t exist in Lego so I used classical large Linear Actuator. It works well when the tipper is empty; It’s a lot more difficult to raise it when fully loaded. Some Details. The front part of the MOC has been worked (more than usual) to represent as accurately as possible the original Toro 60. There is some asccess point and handrail on both side of the face. The massive front radiator shows the big fan, and the cabin is simple but includes a seat and a (on-functionnal) steering wheel. Footnote: The “official” color of Sanvik truck is red, but some parts are not available in red, in particular the panels. This is what the truck could have look like (visual made with Bricklink Stud.io): Thank you for reading !
  13. Superkoala

    Wheel Dozer

    Exact, the CAT wheeldozer were my inspiration, btu there is some "unique" desgin that exist. I keep them in mind for later. I still have a mitigated opinion about the BuWIzz. I like it to make smal MOC with limited space and 3 or 4 basic function only. The last update allowing to personalize the control is a great addition but a possibility to create a complex function is still missing compared to a SBrick.
  14. Superkoala

    Wheel Dozer

    Hello Eurobrick ! Short introduction to my latest MOC : a wheel dozer. A wheel dozer is basically a big blade to push material mounted on 4 (or more) wheels mostly used in mining industry. It is a quite simple vehicle I suppose this is one reasin it is not built a lot in Technic. By the way, I’m a bit late to post this, it is already more than a week old. What’s inside? Propulsion is made through a PF-XL motor placed at the rear end of the truck with a fake L6 engine. The vehicle is 4 wheel drive with a differential on both front and rear axle, plus the rear axle is pendular. A servomotor is used for steering in a simplified technic than the one used on set 42030 (Volvo L350). The front blade is also operated by a single Servomotor which accomodate the upper-lower positionning easily, and intermediate position can also be reached thanks to the use of the BuWizz controller. (sorry last picture is a bit dark I will regenerate it later) Additionnal info on this MOC and some other general info on wheel dozer on my blog at : https://superk-technic.com/wheel-dozer/ Thank you for reading !
  15. Superkoala

    FT's Technic corner - Compact Auto Valve

    Question for you @functionalTechnic The new Pneumatic switches are finally available on Bricklink, and I really want to start building pneumatic MOC but before buying I'd like to have your opinion. From my point of view the new switches are bigger and probably harder to integrate in a MOC due to the position of the air ports. But in an other hand they seems to be more usefull and easy to use thank to the axle in the middle. From your experience, would you say it worth buy them? or the "previous" version from the 42043 Mercedes sets are usefull enough (there is a lot of building possibility for RC switch and autovalve all around the internet). Thanks!