How to make a slow turning wheel?

[swifty.tom]

Hello, I'm new to gmod/wiremod, so I'm sorry if this is a trivial question - how can I make a wheel turn slowly and at constant speed? I've been experimenting a lot with the wheel's torque and friction, but I never got a result that would look good. What I want to have is a horizontal wheel that will be turning some object on top of it to face a specific direction, and I'd like that turning to be slow and constant. Instead I get either very fast movement, or it's slow at the start and getting quicker later.
What is the best way to solve this?

[Pyro-Fire]

gears.

[cpf]

High friction axis+accumulator/speedo-regulated thruster?