42131 alternate: snow groomer

A B-model for the 42131 Lego Technic set, Cat D11 bulldozer.
Like the A-model, the snow groomer features a motor-driven gearbox that pilots four functions: raising / rotating / closing of the blade + raising of the tiller. The model also features a functional tiller and L6 engine.
Instructions available at rebrickable.com/mocs/MOC-1305...

[@maksimiavorskii2597]

Thanks for this built, man! I just finished it and it looks great with all the little details. Hats off for all the mechanics of the front blade - it's really elegant! 🤩 We actually took it to groom the real snow 😀

[@alterlego8852]

Wow... and how did that go??? (and thanks for the positive feedback :) )

[@maksimiavorskii2597]

@@alterlego8852 it works great on a fresh puffy powder: both pushing with front blade and grooming with the tail; but on the hard icy snow it was struggling due to lack of contact between the tracks and the wheels: i could see how they lack tension. But it didn't ruin the fun 🙂

[@alterlego8852]

@@maksimiavorskii2597 well, it was certainly not designed with a real application in mind ;) I was not expecting it to actually work, in particular the grooming!

[@maksimiavorskii2597]

@@alterlego8852 Next time we have a snowfall, I’ll share a video in action

[@tawneylem1]

Awesome build, I now like it more than the d11 cat. Thank you for sharing and will be looking forward to more of your builds.

[@alterlego8852]

Thanks a lot! Glad you liked it.

[@levscollection4566]

Excellent build and set

[@Dadudi]

Very cool model! Well done!

[@tankchief]

Nice job ❤ looks beautiful

[@parazels83]

Fantastic job! Congratulations!

[@alterlego8852]

Thanks!

[@PersonMcFaceFace]

Awesome! Really liking your alt builds. I may just want to build this one instead of the main model!

[@alterlego8852]

Thanks, glad you like them!

[@matthewdickson7838]

Looks better than the D11

[@alterlego8852]

Update: draft of instructions completed (543 pages!). Now entering benchmarking phase (basically rebuilding the model following the instructions to make sure everything is reasonably clear...)

[@gewinder]

Nice work 👍👍

[@alterlego8852]

It is there! The instructions are available at Rebrickable: rebrickable.com/mocs/MOC-130579/alter-lego/42131-alternate-snow-groomer/ They include details on how to build the remote controller with the Powered Up app. 557 pages, available for 7.50 euros.

[@papyaudi5406]

Wonderful Moc ❤I love it , is there instructions somewhere ?

[@alterlego8852]

Thank you! The instructions are on their way... It is a rather complex model, so it takes a bit of time. They will be available at Rebrickable.

[@papyaudi5406]

@@alterlego8852 ok that's good news , i understand it's a lot of work

[@megging693]

Where can i vindt the building instructions

[@alterlego8852]

They will be available at Rebrickable.com. Please bear with me (see previous comments). 3D modelling is ~60% done...

[@Przelak]

Can you control the blaid will driving forward?

[@alterlego8852]

In theory yes, because these functions are independent. However, because this is my very first Powered Up program, I couldn't make it work properly and could only implement one function working at a time. This being said, in practice, you already need two fingers to drive the model, so it would be challenging to operate the blade simultaneously...

[@Przelak]

Thanks im planing tu build this model and add buwizz

[@russellbaker9459]

So this can be built just having a D11 set? Or is additional miscellaneous needed?

[@alterlego8852]

Indeed, it is an alternate, so no extra part is needed. Only can the official D11 app not be used to control the groomer, one needs to make a dedicated controller using the Lego Powered Up app (instructions for designing this controller are also provided).

[@1Route2Heaven]

Do you have the build instruction available?

[@alterlego8852]

They are being made and will be available at Rebrickable.

[@1Route2Heaven]

Thank you. Looking fwd for it to be available at Rebrickable. Any additional Lego parts needed?

[@1Route2Heaven]

It's an amazing design you have made.

[@alterlego8852]

@@1Route2Heaven Nope, this is 100% alternative build, only the original set is needed.

[@1Route2Heaven]

Wonderful, thanks.