Engines (Redstone Blocks) increase speed. Speed is reduced by weight: heavy armor (iron blocks), cargo (chests and barrels), and total craft size. Smaller, engine-dense crafts will go faster than larger ships with the same engine count.
If speed drops below 10% of the maximum the craft becomes disabled, I.e airships disable below 1 m/s.
Fuel use now depends on the number of engine blocks, and is no longer tied only to craft type.
Larger engines have higher fuel consumption, smaller ships will have far better fuel efficiency.
The new Fuel: sign shows detailed fuel usage statistics.
Lift % now determines ascent/descent speed --higher lift permits faster vertical movement.Â