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Bournville June 2nd 2019, 10am
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Norwich MBC Submariners joint Model Boat weekend - 27/28th July

Grantham MBC, SUN, AUG 11 AT 10 AM
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.Model Boat Convention (Exhibition), 24,25 August

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. Bournville Dive-In (2) MBC, 15th September

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Barrow in Furness MBC regatta and submarine event, Sunday 22nd Sept 2019,10am

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    NiMh Battery Pack

    avatar
    ex docky
    AMS member

    Posts : 7
    Join date : 2011-06-28
    Age : 65
    Location : Norfolk

    NiMh Battery Pack Empty NiMh Battery Pack

    Post  ex docky on Tue Aug 14, 2012 8:16 pm

    Hi,

    I wish to use a 12v NiMh (sub c 5000 mAh) stick pack in my OTW S class. Does anyome have any ideas how to seal it?

    I was planning to use glue backed heat shrink + silicone at the ends. What size tubing/layers/technique etc

    Thanks

    ex docky
    avatar
    Tom(ADMIN)
    AMS Forum Owner

    Posts : 2996
    Join date : 2010-11-05
    Age : 59
    Location : Nevada, USA

    NiMh Battery Pack Empty Re: NiMh Battery Pack

    Post  Tom(ADMIN) on Tue Aug 14, 2012 10:04 pm

    On my Neptune I use a 6volt 800a/h nImhs pack to power the flashing led's ...there's no sealant, no shrink wrap, nothing...just five cells held together with a turn of insulating tape. The battery pack sits out in the flood area, held in place with a strip of Velcro.

    It's been there like that for over a year, and has never given me a problem. When I think about it I'll give the terminals a wipe over with a drop of vaseline, but it's not very often.

    Works for me...
    david f
    david f
    AMS Treasurer

    Posts : 2028
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    NiMh Battery Pack Empty Re: NiMh Battery Pack

    Post  david f on Wed Aug 15, 2012 9:13 am

    I have to say that I have no experience of using NiMHs (I only use lead acids (in water) and Lipos(in the dry))

    Richard's method is interesting and seems to suggest that the idea is - NimH are OK in water but not when kept damp for long periods. So if you are going to use them wet let them drain and dry. If you are going to seal them make sure it really is sealed!

    Sheerline in their later models use NiMHs in a sealed tube as a keel. A good principle in keeping the C of G low. Maybe someone with more experience of Sheerline subs could offer their experience of this?

    David

      Current date/time is Thu Apr 25, 2019 9:35 am