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



Join the AMS - Registered Forum users can become members of the AMS and it's free ...... To join register on the forum first then follow the forum link to our membership form which is on our website


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

Let us know of your plans for 2019 and we will promote them on this Forum

.

,
.
.

. ,

,

.
.
.

.

.

,,,,

.That's it for this year, folks! See you all in 2019.

Who is online?

In total there are 8 users online :: 0 Registered, 0 Hidden and 8 Guests

None


Most users ever online was 37 on Sun Mar 13, 2011 11:27 am

Latest topics

» 915mhz / 868mhz as a viable frequency for submarines.
Mon Nov 12, 2018 10:12 pm by tsenecal

» PIC and Arduino microprocessors
Fri Oct 26, 2018 10:49 am by david f

» Control yoke
Tue Oct 23, 2018 11:38 pm by merriman

» brushed motors
Mon Oct 22, 2018 11:47 am by merriman

» Blackpool Model Show 2018
Sun Oct 21, 2018 11:07 am by david f

» Barrow in Furness MBC regatta and sub day 2018
Mon Oct 15, 2018 1:49 pm by david f

» 1/96 THRESHER class r/c submarine
Sun Oct 07, 2018 12:17 am by merriman

» building a 1/96 THRESHER r/c submarine
Wed Sep 26, 2018 2:07 am by merriman

» Operating torpedoes..
Fri Sep 21, 2018 12:46 am by merriman

Statistics

Our users have posted a total of 10664 messages in 1753 subjects

We have 788 registered users

The newest registered user is chesh111

    NiMh Battery Pack

    Share

    ex docky
    AMS member

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

    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

    Tom(ADMIN)
    AMS Forum Owner

    Posts : 2994
    Join date : 2010-11-05
    Age : 58
    Location : Nevada, USA

    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...
    avatar
    david f
    AMS Treasurer

    Posts : 1993
    Join date : 2010-11-10
    Age : 68
    Location : Cumbria

    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 Nov 15, 2018 5:20 pm