Ships Thrusters - Clean vs Dirty drives, not clear what the differences are?

As the thread title says, I want to understand the differences between the two. Both SEEM to offer better thrust and improved top speed, but I can't work out which gives better top speed overall ... and why! The parameters don't seem clear (not to me anyway!) in the description as to EXACTLY what effect they have! Which is better for Exploration, and which for combat? The engineer 'blurb' suggests BOTH are good for exploration, but then there's other comments and parameters that vary that I can't quite get my head around as to exactly what effect they have. Anyone care to spell it out in plain english? Please?
 
Look, I've less than 150 hours in game but from what I understand:

Clean:
much more energy consumption
more agility
more speed
less heat

Dirty:
more energy consumption
much more agility
much more speed
more heat

So both improve thruster performance in terms of speed (movement rates in all three cartesian directions) and agility (movement rate in all three rotational directions). dirty improves more than clean.
Clean consumes more power than dirty but produces less heat.
Use dirty for max speed and when you don't have heat problems. Use clean when you are worried about heat and have more power to spare.

That's how I understand with my limited experience.

EDIT: Well, the link provided above seems to explain all I wrote
 
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I've just realised that was your post too! :LOL:
Um ... Ah! I had completely forgotten about that post ... and it didn't come up when I tried searching the subject! :)
 
There are significant changes to the thrusters optimal mass, e.g. 6A - stock 1440, 6A dirty + drag drives 1260 and clean + drive distributors 1426, in some edge cases like a Viper 3 using enhanced thrusters dirty + drive distributors give better speed than drag drives.

It's hard to measure but I think clean + drive distributors also causes less drift.
 
Higher optimal mass is only an advantage if it leaves you with a higher final multiplier. Sometimes drive distributors will be better than drag drives for certain small vessels, but clean is never better than dirty of the same grade for speed or maneuverability.

The only ultimately advantageous attribute of clean drives is the reduced thermal load, which only applies when the thrusters are actively accelerating the ship. It's most noticeable while maneuvering in gravity wells.
 
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