The Association of Model Submariners.

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* THE FORUM FOR ALL THOSE INTERESTED IN BUILDING AND OPERATING MODEL SUBMARINES *



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For further details of any free events shown here also see the "Shows and Events" section on the forum

*2021 AND SOME EVENTS ARE BEING PROPOSED. Keep them coming and let us know the details! (amstreasure@googlemail.com)

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;:;


Model Sub Weekend, 28th, 29th August. Bluewater Parkway, Greenhithe, DA9 9

Bournville Sub Day. Sept 2021 is looking likely. More details TBA.

Barrow in Furness Regatta and Sub day. Maybe in Sept 2021. Details TBA.

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Latest topics

» GRP end caps
Lipo Batteries EmptyTue Jul 20, 2021 9:31 am by david f

» WW2 mini sub build
Lipo Batteries EmptyTue Jul 20, 2021 9:15 am by david f

» Good 3D beginner's tutorial
Lipo Batteries EmptyFri Jul 16, 2021 3:14 pm by david f

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Lipo Batteries EmptyThu Jul 15, 2021 1:25 am by Telusboats

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Lipo Batteries EmptyTue Jul 13, 2021 3:54 am by tsenecal

» UHF radio control for submarines (openLRS, LoRa, FSK etc. on 458Mhz and 433Mhz )
Lipo Batteries EmptyMon Jul 05, 2021 10:43 am by david f

» The workings of a sheer line submarine
Lipo Batteries EmptyWed Jun 30, 2021 9:03 am by subkraft

» Bonjour from France.
Lipo Batteries EmptyMon Jun 28, 2021 1:43 pm by Tobyledog

» Underwater navigation using UHF ?
Lipo Batteries EmptyFri Jun 25, 2021 5:46 pm by SimonH

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2 posters

    Lipo Batteries

    david f
    david f
    AMS Treasurer

    Posts : 2172
    Join date : 2010-11-10
    Age : 71
    Location : Cumbria

    Lipo Batteries Empty Lipo Batteries

    Post  david f Fri Apr 01, 2011 12:14 pm

    We have had a few enquiries about Lipos in submarines and I thought it would be worth sharing my experiences.

    I have used them in both the Holland, Resurgam and now the Dzik (U uPVC class) for about 3 years with good results.

    No fires or explosions just one dead battery after only 3 charges (£25 down the spout.Boo Hoo!)

    This may have been a faulty battery or the fact that I was not using a balancer charger then.

    The Lipos I use are about 1800mAh capacity and give a "typical" duration of about 30 minutes which is fine for show or club use.

    I now use a very simple Turnigy Compact Balance Charger C3 with good results.

    I use a "home brewed" low voltage alarm which can be heard close too.

    This could be improved but LED's need connecting up, waterproof connections etc. The commercial BEC's often seem to warn low voltage by cutting the throttle, which is not that noticeable in a sub.

    Suggestions please?
    david f
    david f
    AMS Treasurer

    Posts : 2172
    Join date : 2010-11-10
    Age : 71
    Location : Cumbria

    Lipo Batteries Empty Re: Lipo Batteries

    Post  david f Tue Apr 05, 2011 1:18 pm

    I forgot to add that I have not burned the house down yet! I have been charging them on ceramic tiles and storing them in Pyrex dishes.

    I've just ordered a couple of "Lipo Sacks" from ebay for about £4 each which may be a better way to go.
    avatar
    Tom(ADMIN)
    AMS Forum Owner

    Posts : 3002
    Join date : 2010-11-05
    Age : 61
    Location : Nevada, USA

    Lipo Batteries Empty Re: Lipo Batteries

    Post  Tom(ADMIN) Tue Apr 05, 2011 2:18 pm

    I've only ever used LiPo's in my Chinook heli, so I haven't had that much experience with them, I was going to fit a LiPo pack in the little Kilo because of the size and weight of the pack, but I was told that I could'nt run the radio from them, so I never did use them.

    The packs I had always worked perfectly, and I can't say I ever had any issues with charging them either...the charger that came with the Chinook was a balanced one, and I'd run a pack through, land...put that one on charge in a Pyrex dish, plug the other charged pack in, and off we'd go again. I was warned that I should let the packs cool down before recharging them, but to be perfectly honest, I never did, and there were no nasty bangs or emissions of smoke from them at all.

    The Biber will use either a 12volt 5.5 amp gel cell or a set of 10 nicads depending on what room I have left after all the other bits and bobs are installed, so there won't be a chance of using Lipo's in that.

      Current date/time is Thu Jul 29, 2021 11:39 pm