Limited support
This feature is only present in Portal 2: Community Edition and Portal: Revolution.

sv_air_max_wishspeed

🟦 Executable on Client

sv_air_max_wishspeed <value>

How much maximum speed a player accelerates when jumping from a standstill and holding forward in air.

Warning:

This is a cheat command and can only be used when sv_cheats is set to 1.

Note:

The value is synced between the server and all clients.