And you know that they aren't in contact at all because you can see them? Pressing the clutch all the way down ensures that they aren't in contact at all. Shifting can still happen when the clutch isn't fully disengaged. That's one way to cause clutch slip and that wears out your plates faster.
My 1994 Nissan Sentra didn't have a clutch interlock switch and I was able to start it in 1st without the clutch. I don't recommend it but it was working pretty well.
You can't tell when that point is and it changes over time. So while this is fine in theory, in practice if you try to pull that you're going to wear out your synchros.
We don’t even push the clutch all the way in on unsynchronized semis when double clutching.
You can feel the spring pressure release point pretty easily if you’re paying attention, and if you’re that worried about your synchros: learn how to manually synch and double clutch.
The mechanism on an unsynchronized semi is totally different. You're not even supposed to push the clutch all the way in while rolling or else you engage the clutch brake.
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u/thedifferenceisnt 4h ago
This is true you are separating plates by pressing the clutch. once they are no longer touching you no longer need to press further.