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 events shown here also see the "Shows and Events" section on the forum

*STOP PRESS* Coronavirus. A lot of Clubs have already cancelled all activities. Check carefully before you plan any travel

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CANCELLED because of coronavirus. Papplewick Pumping Station, Nottingham, Sunday 12th & Monday 13th April
CANCELLED because of coronavirus. Bournville Sub Day, Sunday 10th May 2020

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(CANCELLED) Submarine, Boating & Sailing Weekend, Norwich MBC, Weekend of 25,26th July

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Model Boat Convention, Haydock Park (Cancelled this year)

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CANCELLED. Bournville Sub Day, Sunday 13th September

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(CANCELLED) Club Submarine Regatta, Furness MBC, Barrow in Furness, Sunday 20th Sept 2020

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Latest topics

» openLRS and 2.4 Ghz and Submarines
FTAO: David Forrest EmptyThu Sep 17, 2020 11:21 am by david f

» Italian CB class from WW2
FTAO: David Forrest EmptySat Sep 12, 2020 10:30 am by david f

» Last event cancelled for 2020
FTAO: David Forrest EmptySat Sep 05, 2020 10:31 am by david f

» Simple telemetry system for openLRS (on 458Mhz)
FTAO: David Forrest EmptySat Aug 29, 2020 1:53 pm by david f

» John Lambert Plans
FTAO: David Forrest EmptyThu Aug 13, 2020 11:51 am by david f

» Piston Tank - Depth Control (Paper by Wolfgang Baumann & Helmut Huhn)
FTAO: David Forrest EmptyThu Aug 06, 2020 9:17 am by david f

» Krick Type Vll B Wiring and build photos
FTAO: David Forrest EmptyTue Jul 28, 2020 8:02 am by Deep Diver (Fred)

» New Gyro On The Market
FTAO: David Forrest EmptySat Jul 11, 2020 9:34 pm by timgarrod

» PIC and Arduino microprocessors
FTAO: David Forrest EmptyThu Jul 09, 2020 10:59 pm by timgarrod

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    FTAO: David Forrest

    avatar
    Tom(ADMIN)
    AMS Forum Owner

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    FTAO: David Forrest Empty FTAO: David Forrest

    Post  Tom(ADMIN) on Thu Apr 25, 2013 12:00 pm

    David, you're our resident LiPo expert user, so I wonder if I could pick your brains, please?

    I've just bought a Turnigy 3 cell 11.1volt 5.000mAh 20-30c burst LiPo pack for my new project(bought from Hobby King, delivered in eight days...not bad, I thought!)

    Can you recommend me a good quality balance charger for it, please? I don't mind spending a decent amount of cash for a good one, the last thing I want is a cheapie charger that either won't last or will damage the battery pack.

    Thanks in excited anticipation...

    FTAO: David Forrest Turnig10


    Richard


    david f
    david f
    AMS Treasurer

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    FTAO: David Forrest Empty Re: FTAO: David Forrest

    Post  david f on Fri Apr 26, 2013 1:37 pm

    Well I use a very simple, small and quite cheap Turnigy C3 Compact Balance Charger.

    I have used this many times over the last 3 years on 2 sets of Lipos. (Obtained from China at an eBay store that Ramesh recommended.) Both still working very well after maybe up to 50 charge cycles.

    The key thing is to use a balancing charger (it connects to the little white plug on the LIPO.

    Our use is quite different to the main users (flyers) we don't need rapid charging or very rapid discharge. Under these conditions I have found Lipos to be very reliable and trouble free (better than Nicads/Nimhs in my opinion. Much smaller and easier to fit in than lead acids ,say. One 1500mAh Lipo drives my Charlie class, U class (both about 5 feet long)for about 30 minutes.

    No fires either! I take the usual precautions:

    - in-line fuse to the sub.
    - I store the Lipos in the special fireproof bags inside a tin box
    - I use a home brewed low voltage alarm to protect the battery. It hasn't been triggered yet because I am quite careful to not sail for too long.

    Go Lipo!

    David
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    Tom(ADMIN)
    AMS Forum Owner

    Posts : 2999
    Join date : 2010-11-05
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    FTAO: David Forrest Empty Re: FTAO: David Forrest

    Post  Tom(ADMIN) on Fri Apr 26, 2013 2:38 pm

    That's excellent, thanks David...just about to go and take a look at that charger. Point taken about the low voltage alarm, I'll check that out as well.

    Gone LiPo!!
    avatar
    Tom(ADMIN)
    AMS Forum Owner

    Posts : 2999
    Join date : 2010-11-05
    Age : 60
    Location : Nevada, USA

    FTAO: David Forrest Empty Re: FTAO: David Forrest

    Post  Tom(ADMIN) on Fri Apr 26, 2013 6:53 pm

    david f
    david f
    AMS Treasurer

    Posts : 2114
    Join date : 2010-11-10
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    FTAO: David Forrest Empty Re: FTAO: David Forrest

    Post  david f on Sat Apr 27, 2013 11:22 am

    That's the one!

    I bought mine from a Trader at the Haydock Park Show (Sorry I can't remember which one.)

    David
    profesorul
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    FTAO: David Forrest Empty Re: FTAO: David Forrest

    Post  profesorul on Tue Apr 30, 2013 10:09 am


      Current date/time is Mon Sep 21, 2020 11:02 am