How to make reverse?

[Questoretyn]

I have been working on this boat for a while. It has working engines with cooling clutch and gearbox but it has no reverse (gearbox does nothing right now). How can do I make reverse? (Also if I can use the gearbox to change gears how do I do that?)

If you're running on a slow computer I would try to avoid opening logic. (You've been warned)

https://steamcommunity.com/sharedfiles/filedetails/?id=2343781270

[FlyingWaffle]

Just use the select tool and click on the gearbox, then on ratio 2 press the back arrow to change it from 1;1 to 1;-1

[SpannerMonkey]

Hi you don't need logic just a toggle button, set gearbox 1;1 and 1;-1, or the other way around your choice, connect power supply from battery and toggle button, if set as described toggling the button will instantly put the gearbox into reverse.
Note the instantly here, you ideally need to lower engine rps and disengage the clutch, in 99% of cases going from ahead to astern without using the clutch will result in the engine stalling.

[Troll]

To make a reverse for your boat, you just need to put a gear box on 1 : -1. It's a single tick to the left on a new gearbox.

If by changing gears on the gearbox you mean to change from :
Ratio 1 5:2 to
Ratio 2 6:5

All you need is to add a toggle button to the gearbox input.

If it's about the ratios, you tick either the left and right arrows to choose what ratio you want.
When the arrow on the gearbox is pointing towards the engine, you will get more RPS at the other end than at the engine. For example, a 3:1 ratio would mean you have 3 times the engines RPS on the other side of the gearbox (if the engine can manage whatever is linked to the circuit).

When the arrow points away from the engine, it's the reverse. You get as many times less power at the end of the circuit as the chosen ratio.

Hope that helps, I'm not sure I'd understand myself :p.