Model Boat Mayhem

The Shipyard ( Dry Dock ): Builds & Questions => Submarines => Topic started by: johndora on March 19, 2023, 07:13:29 pm

Title: Staying power
Post by: johndora on March 19, 2023, 07:13:29 pm

How long should my 1-48 scale Type VIIC U-Boat batteries last? I’m using a 7.2v NiMh 4000mAh pack and struggle to get an hour.

Title: Re: Staying power
Post by: Andyn on March 19, 2023, 07:21:00 pm

That sounds like a pretty impressive run time to me…

What drive motor are you using?

Title: Re: Staying power
Post by: johndora on March 19, 2023, 07:38:33 pm

Thanks! I've two MFA 385 motors.

Title: Re: Staying power
Post by: nemesis on March 20, 2023, 12:07:32 pm

Sounds like a surface runner with minimal controls. So the running time is in with that. If you are running pumps and planes I doubt that you achieve the time you state.I ran mine at 6v 10amp Ni-cads to get reasonable performance. nemesis

Title: Re: Staying power
Post by: johndora on March 20, 2023, 01:20:43 pm

I am now thinking an hour is fine - I’m able to dive and have run the pump a lot. It should get better when it’s warmer as the water is quite cool - below ten Celsius…