I've never really liked the idea of keeping track of individual weights when dealing with encumbrance, so I decided to simplify it in Pulpwood! The system is really simple, so the post should be pretty short
Encumbrance is basically measured in 'slots', instead of weights. Each slot is basically an abstract measurement of both weight and size of objects. Different items take up different amounts of slots, and some items can have multiples in a single slot. So, for example, a rifle may be two slots, put a few magazines of bullets may only be one slot.
Every character has a number of slots equal to 2 + their Strength score, not their modifier. Thus, if someone had a Strength of 18, they would have 20 slots.
Another thing that annoys me about encumbrance is movement penalties, so Pulpwood! will not have them. Basically, once you fill up your slots, unless you drop something, you can't carry any more. This would represent not having enough room in your backpack, being too tired to haul around another gun, etc.
Pretty simple, but it's fast and elegant.