So the in-game race gearbox is not really realistic. IRL most racing gearboxes are dogboxes, which do not use synchronisers at all, and instead use big trapezoidal teeth that act similarly to synchros, but do not require the revs to be near one another to engage. They will also go into gear without the clutch depressed. Here's a dogbox, with the teeth highlighted As you can imagine, these will basically "snap" into place when they get depressed even a little bit. And for a comparison, a regular gearbox with the synchro mechanism highlighted And judging by the sound in game (relatively large quiet moments between acceleration and coasting) the in-game gearbox should be a dogbox. Also the thing is straight cut (the thing that actually makes the noise), but for whatever reason it is not a dogbox? Usually having a dogbox is more useful than having a straight-cut (as evindent by the amount of helical cut dogboxes vs the amount of straight cut synchro boxes). But the racing gearbox in-game will get damaged if you don't depress your clutch fully or if you shift too quickly. I imagine a simple solution would be to just make whatever the variables are behind synchro health and shifting characteristics ridiculous, and then we would get something that emulates a dogbox in game (i.e. shifting with no clutch and no synchro damage). Hell, we could even have it as a new object, and keep the racing gearbox that is in-game now.
