Train-Engine stalls when Gearbox is reversed

[connivankuchen]

So, im trying to build a train. I used a large diesel engine, connected through a clutch and a Gearbox with the Train wheel assembly. I can perfectly drive forwards, but when i stop the train, release the clutch, switch the Gears to reverse, then the Engine just stalls and i can only start it again, after the Gearbox is pressed again. The Gear Ratios are just 1:1 and 1:-1 so the Problem cant be the Ratios.. for fun i didnt use any Microcontroller and i even disconnected my PID for Engine-RPS-Control... so i would be very grateful if anyone had an idea how to solve the problem. Thanks in advance.

[Ra-Ra-Rasputin]

The engine stalls because you're engaging reverse with forward momentum most likely.

Going to need a link to the vehicle in this one.

[connivankuchen]

Originally posted by Ra-Ra-Rasputin:

The engine stalls because you're engaging reverse with forward momentum most likely.

Going to need a link to the vehicle in this one.

I thought the same, but even if i stop the train fully with brakes it does not work..
Here is the link to the Workshop:
https://steamcommunity.com/sharedfiles/filedetails/?id=2606983592

[GMC]

Are you using the same gearbox to step down when going forward? If you have a gearbox set to e.g. 3:1 for the off position and 1:-1 for the on position, it's going to need 3x as much torque in reverse.

It's better to have one gearbox always step down and another switch between 1:1 and 1:-1 (or between stepping up and 1:-1; you don't usually need to go as fast in reverse as forward).

[connivankuchen]

just to try my creation i had only one gearbox wich was switching between 1:1 and 1:-1. The train could move forward very fast, but not in reverse...

[connivankuchen]

OOOHHHH my God... I´ve found the Problem. After lots of testing i found, that the air scoop as air intake for the engine isnt working in negative velocity... i think it may be a Bug, but it works with the fluid port.

[Ra-Ra-Rasputin]

Originally posted by connivankuchen:

OOOHHHH my God... I´ve found the Problem. After lots of testing i found, that the air scoop as air intake for the engine isnt working in negative velocity... i think it may be a Bug, but it works with the fluid port.

Well, i was going to take a look at it after i came back from stores, but that's an interesting find. I haven't actually used the scoops in any capacity in my creations, as i prefer flush air intakes.