I displayed this GBC at an event a few weekends ago in Adelaide, Australia.
The engine you see at ~48 seconds is a W16, but you can only see the top 8 cylinders because of the camera angle.
Some questions to anyone who has participated in those large group GBCs that you find on YouTube, the ones with a hundred modules. Do they run the whole weekend non-stop? Or periodically (like, for 10 minutes every hour)? Or just once, for half an hour or so once it's all been put together?
If it's not "just once", how do you manage modules that might not be quite as reliable as they should be? Or is it just me that has issues with reliability?
Conversely, if it's not "non-stop" how do you manage crowd expectations?
Is there one person who's in control, and can order a troublesome module to be removed from the Contraption? Or do all the builders need to be there the whole time in case something goes wrong with their module? Again, this is something of a moot point if making reliable modules is easier for everyone else than for me.
Owen.