Ever since item pipe upgrades were added (since before b3e301970a2098aa8100663a97c6beec2622ba2e), using an Large Advanced Motor in an item pipe only transfers 64 additional items per cycle (60 ticks) instead of the expected 128 items.
The other motors transfer items at a rate appropriate for their tier:
Basic Motor: 2 items/cycle
Large Motor: 8 items/cycle
Advanced Motor: 32 items/cycle
Each tier of motor up to HV (Advanced) multiplies the transfer rate by 4. To make this pattern hold for the remaining tier (Large Advanced at EV), it should transfer 128 items/cycle instead of 64.
Ever since item pipe upgrades were added (since before b3e301970a2098aa8100663a97c6beec2622ba2e), using an Large Advanced Motor in an item pipe only transfers 64 additional items per cycle (60 ticks) instead of the expected 128 items.
The other motors transfer items at a rate appropriate for their tier:
Each tier of motor up to HV (Advanced) multiplies the transfer rate by 4. To make this pattern hold for the remaining tier (Large Advanced at EV), it should transfer 128 items/cycle instead of 64.