i did a spreadsheet to see exactly how much of each thing you would need to fully dispense 1 rocket defense with 4 speed module 3
and it is quite scary
https://docs.google.com/spreadsheets/d/1dmSwBIH7q-Z11LUvrDZ29n39vHK_U8aLOKBKGuMgxmo/pub?gid=1333436594&single=true&output=pdf

summarized, you would ...

Hi, I challenge you to "finish" the game as fast as possible (as it is in it's actual state : launch a rocket from a silo)
+ there is 2 extra speedruns, one for the time to get the whole factory backed up, and another one for the time between 2 rockets

http://upload.factorio.org/images/factorio ...

i copied it to youtube : https://youtu.be/NKoav6_wY1c

hi, so as the game get more and more advanced, the factories need to be quicker every time
and for me the fast inserters aren't fast enough sometimes (mostly for the copper wire coming out from copper plate and in to green electric circuits)
so i thought about something to move items from a belt to ...