Model Boat Mayhem

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Author Topic: Staying power  (Read 2117 times)

johndora

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Staying power
« 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.
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Andyn

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Re: Staying power
« Reply #1 on: March 19, 2023, 07:21:00 pm »
That sounds like a pretty impressive run time to me…

What drive motor are you using?
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johndora

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Re: Staying power
« Reply #2 on: March 19, 2023, 07:38:33 pm »
Thanks! I've two MFA 385 motors.
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nemesis

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Re: Staying power
« Reply #3 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
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johndora

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Re: Staying power
« Reply #4 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…
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