In this video we have a closer look at the gears and configurations needed to drive the LEGO Scenario boxes. We also look at various tyres, wheels and the process to build them. The "Scenario" name isn't as random as it may seem and talk about why. Our discussion is rounded out with a look to what the future direction of the LEGO Scenario boxes might be.

Think of it as a cross between LEGO building with micropolis, mosaics, technic, architecture and Dots techniques all thrown into the mix. Add a little motion and wrap it up in a narrative.

Visit https://www.mattelder.com/scenario for all LEGO Scenario resources

This is the 3rd video in the series. The others can be found here:
Part 1 - Introduction: https://youtu.be/qhQ-CA1BanY
Part 2 - Standard: https://youtu.be/uQu14XxU-zI
Part 3 - Gears, Name and the future: https://youtu.be/ET0f-ma5c-c

NOTE: In the future, plan to release video instructions and plans so you too can build these ... or your own versions.

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G’day Everyone, Matt Elder of mattelder.com and in this video we are going to look at the LEGO Scenario Gears, Wheels and Tires, the name and the future direction. This is the 3rd video in the series and be sure to check out mattelder dot com forward slash scenario for the LEGO Scenario resource page. Lets get started.

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Gears.
Quickly wanted to touch upon gears. In the London module, it is effectively a single axle that runs through all the wheels (it is made up of 2 technic axles with a connector as you need at least a 17 length axle. If you didn’t mind overhang and had one, you could use a single 32 length axle).

This can be turned manually by hand if you didn’t have any motors. If the speed seems a little fast, you can place on this configuration of gears and a hand crank to really slow it down. Or if you did have a motor, here is a basic technic tower that can plug straight in.

Next up is the Wave setup. At the bottom you have the same Technic Wedge Belt Wheel. The different speeds are caused by having different sized pulleys at the top. Here you have a Technic Steering Pulley Large, Technic Wedge Belt wheel, and a Motor 9V Micromotor pulley. You can put them in any order to get differing speeds.

Here we’ve used extra large rubber bands with square cross sections. It is the one thing I don’t like about the pulleys as the rubber bands will gradually stretch over time if left taught.
To get the different directions, it will depend upon which side you have you Technic Wedge belt wheel. One side will go one direction, the other side the other – depends upon which way you turn your motor.

In the top to get the wheels turning in independent directions, there are 3 separate axles here, not a singular one running the whole length. You’ll notice between the wheels however is only 1 brick wide. What this means is that each brick has ½ an axle sitting on it. Not ideal and not pretty but given the 16 x16 limitation, only way to do it.

These support beams are very important. Without them, because there is only half a length of axle sitting in the brick, the pulleys will pull the axles and wheels straight out.

Now the Star Wars wheel box has a single axle that runs through it but the center wheel turns in the opposite direction. How is it possible as all wheels should turn the same way? The 2 outer wheels are standard wheels with rims like this. The middle wheel however doesn’t have a rim, it has a custom setup of gears and lift arms. The rubber wheel itself is literally resting on the gears which turn it.

To do that it does however need an anchor point which is why this section here exists – it needs some friction so it can turn in the opposite direction. This means you have to be really careful with the spacing so anything rotating downwards doesn’t hit the lift arm and break. You’ll notice this is why this band with Star Destroyers is so far over to stop it crashing into the support.

Tires and Wheels
The dots bands grip really wheel on a 56 tire diameter, but you need a lot of internal space to make the gears work.