Full-speed and half-speed draws

[immibis]

retygav
Bottom left is a double dozer draw, which works at half speed without copiers.
I'm sure you're familiar with the furnace draw, half furnace draw and full-speed furnace draw along the left.

As you can see (top right) simply dropping crates down onto a conveyor will move them at half speed.
Right, second from top: an upside-down full-speed furnace draw which can draw crates downwards at full speed
Right, middle: an upside-down half furnace draw which burns every second crate
Right, second from bottom: a very simple full-speed downwards draw that doesn't use copiers
Right, bottom: A full-speed downwards draw using only conveyors and ramps, but you need quite a bit of horizontal space to use it.

Also cedogyz shows a full-speed downwards draw using old physics.