Very good (i love trains)

two day ago i drove it 1/3 from Spycakes to the arctic. it had to be refuel twice and half way thru i had to increase rps to full to make up for the power loss, leading to the engine over heating ang cathing fire.

today i made it all the way ti the arctic from Spycakes only using a half tank and having no loss in power even tho i rode the throttle full open and not nedding to increase rps.

i did nothing different

Yes, until the engine starts recharging. If it still drains while the engine is running you might have to increase the rps and consider how much electricity the attached cars are draining.

is it just me or does it start to slowly loose power over time?

Could you upload the connector module?Include the controller in the cab and on the sides of the train
I want to connect my own train

Very nice! Curious about what inspired you to make this specific locomotive?

Love it!