Sunday, 18 March 2018

LEGO Technic 42078 B Model - Mods

Recently I purchased and built LEGO Technic set 42078 B model (Mack LR garbage truck). After finishing the build I had a couple of ideas for mods to improve it.

These are:
- Removing the lever on the front forks. I don't think this is really needed.
- Adding some extra panels to the bin to make it load and unload easier.
- Remove the top LA and other parts used to open and close the rear hatch, this now opens and closes based on the internal compactor.
- Add a rear catch to work with the above.
- Change the gearing to allow the compactor to work easier. This includes a better leaver to turn it.

I also tried making the rear body tip, while I was able to make this work it was not very reliable and would struggle with any load in the rear body so I pulled this up and put it back to standard.

Below are some photos and a video of all of these.


Friday, 9 March 2018

LEGO Technic 42078 B Model - Build Process Review

A quick and dirty review of the build process of LEGO Technic set 42078 B Model (Mack LR Garbage Truck)

Today I purchased this set, with the plan of building the B model (Mack LR Garbage Truck). This is my first LEGO Technic set in almost two years so I was super keen to get hold of it and start the build process.

I spent an hour and a half unpacking and sorting the parts before using the downloaded building instructions to start the build process. I spent two hours building last night and got just under 25% done.

Last night I sat down with the plan of doing a couple more hours of building of this set, if I could get a bit over half the building done I would have been happy. I started at around 7:30pm with a plan to build until around 9:30pm.

As the night went on the build process got easier, less parts to search to find the one I needed and less complex steps. Around 10pm I was still going well so decided to push on, by 11:30pm I was close to the end so kept going. The build process and photos can be seen below. Total build time was 2 hours to sort the parts and just over 6 hours to build. This was working at a decent pace with a few drink breaks and me needing to get up a few times to stretch my legs and back.

The build process goes like this:
Rear Chassis
Front Chassis
Lifting Arms
Rear truck body
Rubbish Bin

The features include:
- HOG (Hand Of God) steering via a knob on the cabin roof, this works well enough.
- Fake inline 6 cylinder engine, this is the first time I have seen a engine built like this, it suits the truck well and fits nicely in the cabin.
- Bin lifting arms, these work well but are something I am planning on making some changes to when I start MODing this set. I think the small lever to flip the bin back in to the rear body is not needed and I can come up with a better way of doing it. This will be important when I look at adding Power Functions to it.
- Rear Opening, this works via a knob on the top of the rear body and uses a small LA to open this. Again this is something I am going to look at changing to be able to add Power Functions.
- Compactor, this is a very cool design and works well to push the rubbish out.

Overall I am very happy with the truck. It looks good, almost to model team level of detail in some parts. The build process was enjoyable, pre sorting the parts helped a lot with this. You end up with a heap of left over parts which I am going to use for some MODS to this set. I have not put on any stickers, not until I have finished MOD'ing it.

Wednesday, 7 March 2018

42078 Mack Anthem

I have just done a pre-order of this, it should arrive by the end of the week. I look forward to a busy weekend of building the B model.

My plan for MODs to this so far are:
- Changing arms to work in one step.
- Changing the rear to open automatically as the load is pushed out.
- Add Power Functions for the above.
- Build some new / different bins.

Tuesday, 6 March 2018

Coming Back

After almost two years away from the LEGO Technic hobby, I am getting back in to it.

I hope to be sharing my MODS and MOCS soon.

Friday, 20 May 2016

MTAS Attachment - Cherry Picker

My second attachment for this is a modified Unimog attachment cherry picker. Originally this was built to mount on to the back of LEGO Technic set 8110 - Unimog. I have modified this to mount on to my MTAS truck, this required a redesign of the mount, removal of the turntable control and redesign of this to work on the new mounting standard. The black control on the side raises and lowers the cherry picker, the grey gear on the rear rotates the turntable.

MOC - MTAS Truck and Scissor Lift

Modular truck attachment system (MTAS) is a standard I have designed and developed to allow various attachments and tools to be used on my LEGO Technic truck.

This system provides for the flexibility to easily swap attachments on the truck, depending on the use of the truck at that time. The idea for this came about from my experience designing and building Unimog attachments which I have really enjoyed designing and building over the past few months.

The truck features:
- Hand of God steering
- Opening cabin doors

- Scissor Lift
The first attachment for this is a modified Unimog attachment scissor lift. Over a period of time I will be converting more Unimog attachments to use with this and building new ones from scratch.

Tuesday, 17 May 2016

Interesting Quote

“The same person who would never raise his hand in a lecture hall of two hundred people might blog to two thousand, or two million, without thinking twice. The same person who finds it difficult to introduce himself to strangers might establish a presence online and then extend these relationships into the real world.”

Susan Cain, Quiet: The Power of Introverts in a World That Can't Stop Talking

Monday, 16 May 2016

Starting Them Young

I don't normally post "personal" photos on here but this photo really stands out.

On the weekend, my wife captured this photo of our 18 month old daughter and I enjoying some time together on the floor with my LEGO Technic Unimog. Moments like these are what makes being a parent so awesome.

Link - Please Help

Friday, 6 May 2016

Link - Beaches Brickmaster

A 14 year old finding away to make money while doing something he enjoys

"As a serious lover of LEGO building and playing, my aim is to help kids who've forgotten how to build their old LEGO sets and bring them back to life!"

Thursday, 5 May 2016

Unimog Attachment - Flail Mower

Over the past couple of weeks I have been researching, designing and building another LEGO Technic Unimog attachment, this is a flail mower. A few years ago I watched my local council mowing along a creek using one of these and thought it would make a good attachment, it is only now that I have the right pieces to make it possible. 

For those who don't know what a flail mower is, below in red is some information from Wikipedia.

"Flail mower - From Wikipedia, the free encyclopedia

A flail mower is a type of powered garden/agricultural equipment, which is used to deal with heavier grass/scrub which a normal lawn mower could not cope with. Some smaller models are self-powered, but many are PTO driven implements, which can attach to the three-point hitches found on the rear of most tractors. This type of mower is best used to provide a rough cut to taller grass where contact with loose debris may be possible such as roadsides.

The flail mower gets its name from the use of "flails" attached to its rotating horizontal drum (also called tube, rotor, or axle). Many implement companies also refer to the flails as knives or blades. The rows of flails are usually staggered to provide a complete cut. The flails are attached to the drum using chain links or brackets, depending on the manufacturer. The rotating drum is perpendicular to the axis of the tractor. The PTO driveshaft along the tractor's axis must make a right angle through the use of a gearbox in order to transfer its rotational energy to the drum. As the drum rotates, centrifugal force pushes the flails outward.[1]

Standard flails are shaped like an extruded "T" or "Y" and the chain attaches to the bottom. There are also proprietary flails with different shapes for shredding larger brush and others that leave a smooth, finish cut.

If a flail strikes an immovable object, it simply bounces off. Other rotary type mowers have a tendency to grab and throw the object out of the mower deck if its small enough. This fact makes the flail mower best suited for areas where thrown objects would cause damage.

Flail mowers may also be used in a more or less upright position for trimming the sides of hedges. They are often called hedge cutters (or sometimes also hedge trimmers) then. Especially in forestry (agroforestry) some very robust variants of flail mowers – called flail mulchers, flail shredders, or flail choppers – are used."

Over the past couple of weeks I have been researching, designing and building this. I wanted this to have two features, the lifting of the how mowing attachment and the turning of the flails, to do this using just the single front PTO I have built a two way switch box, this allows both functions to work off a single PTO. Most of my time working on this has been on the mowing part, getting the gearing right and adjusting the height to ensure it is low enough to mow without hitting the ground too much.

Overall I am very happy with how this has turned out, it works as I want it to and is something a bit different. It is also another "front" attachment which is something I have not built many of and brings with it a number of design and construction challenges which are different to those faced when building "rear" attachments.

Monday, 2 May 2016

MOC - LEGO Technic Mobile Phone Holder

On the weekend, while working on my latest MOC I decided to throw together a mobile phone holder for my desk at work.

I have seen a few of these in the past, taking the best of each of these I have built my own. It fits my phone perfectly and allows the charging cable to enter via the bottom. I built this in white as it is the colour I have the least amount of parts in.