it’s 0.8333…

, which you would have to pull out a calculator (and round a bit) to figure out given the in‐game tooltip “rotation speed: 302°/s

”.right now, rotation speeds are defined in the game’s files as full turns per tick (where a tick is 1/60 of a second). to find the effective rotation speed, you might think that you could just multiply that number by 60, but

*no*, since the game is tick‐based, inserters have to pick up and drop items on a tick boundary, so inserter speeds must be adjusted to compensate; you must divide 0.5 by that number to find how many ticks it takes to make a half‐turn, then

*round up*to account for tick boundaries,

*then*double it and divide 60 by that to get the final throughput.

*it’s madness!*

even after that, the various speeds have no pattern to them: the burner inserter (0.01 turn/tick) is half the speed of the long inserter (0.02 turn/tick), but is 0.72 times the speed of the basic inserter (effectively 0.013888… turn/tick), which is itself 0.36111… times as fast as the fast inserter (effectively 0.0384615… turn/tick). it kind of seems like they were picked at random.

i propose that yellow inserters have a rotation speed of 1 full turn per second (360°/s): this would make them move like a 120 bpm metronome, diligently keeping time in the precise clockwork that is your factory. it would also make them much easier to understand, with them having an unboosted throughput of 1 item per second (or 60 items per minute, if you prefer).

the other inserters’ speeds can be defined as easy ratios to this basic inserter: 0.5 turn/s (180°/s) for the poor burner inserter, 2 or 3 turn/s (720 or 1 080°/s) for the fast/stack/bulk inserters and 1.5 turn/s (540°/s) for the in‐betweeny long inserter.

the only downside i can think of is that the turn/tick values of these speeds are mostly non‐decimal fractions, with the basic inserter having 0.01666… turn/tick. i’m sure the developers can figure something out and i hope they agree that inserter speeds should be simplified! thank you!