First of all, love the kit, it’s well thought out and beautifully made and what follows is a teeny tiny gripe that shouldn’t been taken as a big criticism so much as an observation.
The current arrangement of the 3 gears on the junction all being different sizes adds a lot to the fiddlyness of the chains.
I guess maybe it helps you see that they are moving at different speeds, but you can see that from the chains.
The problem is a loop of chain around 2 components or 3 components varies in size quite a bit depending on the sizes of the gears involved.
Aside from the transistor and the junction most of the gears are around the same size, so you can rearrange components without needed to change up belt lengths so much.
The transistor isn’t used so much, but the junction is used all the time.
If the gears were all a standard size then you would largely just use the same 2 component and 3 component chain loops over and over without having to redo chain lengths hardly at all.
A good example is something like tutorial 15 where you have a bunch of resistors in series and you want to measure the voltage across one.
You want to pop out the resistor and replace it with a junction, then loop the capacitor and resistor off that junction.
But because of the different sized gears on the junction you likely need to adjust the size of the main chain. And you might not have suitable chains lying around to loop around the other two components.
And you can’t just go long because then you get issues with droop in the chains and there’s not a lot of clearance between the 3 levels.
If I had a do over on the design the two changes I’d make would be
1: as much as possible use a single gear size
2: a little more vertical spacing between the 3 layers so that long chains have a little more space to drop before catching on another chain