The title is the question, does anyone know how the weekly drop cap works? I'm not talking about a generalization like as playing time increases, drop limit increases, but does anyone know a concrete equation or a solid limit or something like that?
TF2wiki said:On April 20, 2010, the item drop system was changed. Instead of rolling randomly at intervals to see if you got an item drop, now the system rolls to determine when your next item drop will occur. With this change, players are guaranteed to find items at fairly regular intervals. This was made because many players had unlucky streaks, where they didn't find any items for weeks. That isn't possible anymore. The drop rate was also increased, but now players have a limited playtime per week when they can receive drops. Playing beyond that amount won't find any more items, but some of the unused time will rollover to the following week, speaking of that, the item cap resets at Wednesdays at 5:00 p.m. pacific standard time. this test was experimented and needs more input.
TF2wiki said:Playing beyond that amount won't find any more items, but some of the unused time will rollover to the following week
Sounds like you're catching some of that rollover drops.
TF2 Wiki said:The maximum amount of items you can get is not known, however it can't exceed 56 because the day drop limit is 8. In average a player gets ~6 items a week.
I got 29 items this week. Since the Mann Co update, I've been getting more.