42128 Roll-off Truck

[M_longer]

Here it is, model that was supposed to be built right after debut of 42128 in 2021.

 

But we have 2024...

 

 

Anyway; almost 1900 parts, packed in relatively small space. Direct successor of my 42108 Roll-off Truck

 

 

And part of triplets, along with 42144 Cherry Picker

 

 

Based mostly on this truck:

 

 

The initial ideas was to add as much functionality as possible to 42108 truck. Result - my most complicated alt model to date - within similiar dimensions comes with twice more functions! :)

 

Here's video, and description of functions can be found below:
 

Instructions can be found as usual at Rebrickable:

https://rebrickable.com/mocs/MOC-170103/M_longer/42128-roll-off-truck/#details

 

ALL IMAGES
 

Let's start with the visuals - model was designed to look good with and without stickers.

 

 

And to look like same brand as 42108 Roll-off, even with not too much parts used in same places. I know that it might be bit boring, but I'm quite pleased with the result :)

 

 

 

Cab comes with openable doors and working steering wheel.

 

42182 colour palette is annoying. Really. It took some trial and error to have good looking parts of the model without the rainbow effect. I'm quite proud of usage Tow Truck front license plate at rear here;

 

 

Model comes with 7 manual and two pneumatic functions. I have rebuilt the frame few times to match the functions stickers from A model.

 

So, first function is obviously steering. There are three steerable axles, with 3rd solid axle (no fake engine, sorry, no space inside the frame). But with working steering wheel.

 

 

All chassis functions are controlled by 4 knobs, two on each side of the truck. They fit the symbols on stickers almost perfectly;

 

 

Left gear controls the swivel of the crane arm, right one allows to deploy the outriggers.

 

Model was designed to work with knobs hidden behind side panels and being slid out a bit, with outriggers knob being placed on longer axle, thus deployed bit further;

 

 

If you don't like the idea, there's an additional universal knob, allowing to operate with longer axle:

 

 

But let's stay with the outroggers for a while. They are placed right under the turntable.

 

They have transport position, when they are not stick out to sides, but can be flicked for deploying;

 

 

On the right side of the chassis are located knobs operating rear axle lift and winches.

 

 

Rear axle fenders were designed to be lifted a bit with the axle, allowing the steering to work properly even with axle above the ground:

 

 

Winches are placed at the end of the lift frame:

 

 

And are driven by numerous gears trough the chassis and said frame.

 

Two pneumatic functions are fed from large pump placed behind the cab and controlled by two valves placed on both sides of the cab:

 

 

The frame is elevated by two 1x11 cylinders, and require some pumping to make high pressure in the circuit to lift the container. But works flawlessly:

 

 

It can also work as typical dump truck:

 

 

Tailgate has small, white  lock:

 

 

There are small wheels above the frame hinge that guide container while sliding into the frame (can be seen on the video too);

 

 

The arm, as mentioned before, is turned by knob on the chassis, but elevation of the arm is made with small linear actuator.

 

 

Arm can be extended by hand, while second section is moved by pneumatic piston;

 

 

The claw was redesigned by @erictrax and instead of 5x7 frames uses 1x5 liftarms for teeth.

 

 

It can be swapped for pallet fork;

 

 

 

 

 

 

Edited January 14, 2024 by M_longer

[Krxlion]

Really detailed model full of functions! I never had a chance to build original model but yours looks like it has a lot of playability. One small note from my side regarding presentation, the photos could be smaller (around 2/3 of its size), because it is hard to take full picture of the model in one look. Anyway, good job and keep up the good work! :)

[M_longer]

51 minutes ago, Krxlion said:

Really detailed model full of functions! I never had a chance to build original model but yours looks like it has a lot of playability. One small note from my side regarding presentation, the photos could be smaller (around 2/3 of its size), because it is hard to take full picture of the model in one look. Anyway, good job and keep up the good work! :)

Noted, I'll resize them.

 

[Jundis]

Glorious B-model again @M_longer !

Also really cool you used full amount of functional parts and not just selected a few :-)

[Good old Lego builder]

Great model, I like how all functions are manual! Well done!

[Timewhatistime]

On 1/14/2024 at 12:24 PM, M_longer said:

within similiar dimensions comes with twice more functions! :)

There seem to be rather twice as much functions as in the a-model - but without any doubt, this alternative model has got an impressive amount of functions.

My favourite part is how the axle for driving the winch at the very end of the tipping bed is routed all the way down by using two universal joints (reminds me a bit of 42078, where this rare arragement is used as well) - and surely some more gears which are invisible deep down in the chassis. Very nice!

[Mikdun]

Looking impressive! And really overloaded with functions - which is good thing. 

This model shows how Technic should work.

[Thirdwigg]

Great job with another great alt build @M_longer. It's crazy the amount of functions you were able to add to this build, and make them look finished. All with a limited parts. Thanks again for sharing.

[Paul B Technic]

I have just came across this while researching a truck like this, great work and has given me some ideas.

 

[thekoRngear]

Man! Such an awesome work. It somehow missed my eyes. Choke full of functions. A slight (maybe on nitpicking level) concern for me is the three axle steering. The 3rd axle seems to move/response a little late when inclined but again I am sure that is a little thing. I honestly think any parent who want their child to learn and play with Technic should seriously consider this MOC.

Also in the video it would be cool if a little sneak-peak in the drivetrain along with Engine was shown. Or did I miss that!

Awesome MOC 🔥👏

[Maaboo the Witch]

POWER TOW! POWER TOW!

Very, very nice work.

[DzieX]

Well, you definitely got skill and talent.