The Association of Model Submariners.

Would you like to react to this message? Create an account in a few clicks or log in to continue.

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


FTAO: David Forrest 14212712

Just a reminder that this Forum will close for posts next November (2025) . It will continue to be available as a reference on the Wayback Machine https://web.archive.org/

FTAO: David Forrest 14212712

For a guide to past events see the "Shows and Events" section.
B i
::::

S

P~~~

$$$

Who is online?

In total there are 3 users online :: 0 Registered, 0 Hidden and 3 Guests :: 1 Bot

None


Most users ever online was 180 on Tue Nov 05, 2019 6:03 am

Latest topics

» Microprocessor choices
FTAO: David Forrest EmptyWed Dec 04, 2024 7:26 am by geofrancis

» Robbe Seawolf V2
FTAO: David Forrest EmptyWed Dec 04, 2024 7:17 am by geofrancis

» Futaba -868/915mhz equipment
FTAO: David Forrest EmptyTue Oct 29, 2024 4:46 pm by tsenecal

» RC Drift Gyro for pitch control
FTAO: David Forrest EmptySun Oct 20, 2024 2:04 pm by geofrancis

» WW2 mini sub build
FTAO: David Forrest EmptyThu Oct 17, 2024 2:34 pm by geofrancis

» sonar data link
FTAO: David Forrest EmptyMon Oct 14, 2024 4:31 pm by geofrancis

» ExpressLRS - 868/915 Mhz equipment
FTAO: David Forrest EmptyFri Oct 11, 2024 8:58 pm by Marylandradiosailor

» Flight controllers as sub levelers
FTAO: David Forrest EmptyFri Oct 11, 2024 8:14 pm by geofrancis

» 868/915 Mhz as a viable frequency for submarines.
FTAO: David Forrest EmptyThu Oct 10, 2024 3:21 am by tsenecal

Statistics

Our users have posted a total of 12536 messages in 1992 subjects

We have 1021 registered users

The newest registered user is Mike Echo

3 posters

    FTAO: David Forrest

    avatar
    Tom(ADMIN)
    AMS Forum Owner


    Posts : 3026
    Join date : 2010-11-05
    Age : 64
    Location : Nevada, USA

    FTAO: David Forrest Empty FTAO: David Forrest

    Post  Tom(ADMIN) 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


    Posts : 2412
    Join date : 2010-11-10
    Age : 74
    Location : Cumbria

    FTAO: David Forrest Empty Re: FTAO: David Forrest

    Post  david f 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
    avatar
    Tom(ADMIN)
    AMS Forum Owner


    Posts : 3026
    Join date : 2010-11-05
    Age : 64
    Location : Nevada, USA

    FTAO: David Forrest Empty Re: FTAO: David Forrest

    Post  Tom(ADMIN) 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 : 3026
    Join date : 2010-11-05
    Age : 64
    Location : Nevada, USA

    FTAO: David Forrest Empty Re: FTAO: David Forrest

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

    Is this the charger, David?

    http://www.hobbyking.com/hobbyking/store/__8247__Turnigy_2S_3S_Balance_Charger_Direct_110_240v_Input.html
    david f
    david f
    AMS Treasurer


    Posts : 2412
    Join date : 2010-11-10
    Age : 74
    Location : Cumbria

    FTAO: David Forrest Empty Re: FTAO: David Forrest

    Post  david f 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
    profesorul
    Guest


    Posts : 386
    Join date : 2011-07-03
    Age : 60
    Location : Bucuresti, ROMANIA

    FTAO: David Forrest Empty Re: FTAO: David Forrest

    Post  profesorul Tue Apr 30, 2013 10:09 am

    HI DAVID ,
    I have these one:

    http://www.hobbyking.com/hobbyking/store/__11668__HobbyKing_Variable_6S_50W_5A_Balancer_Charger_w_accessories.html?strSearch=variable 6s[/url]

    what do you think?.Is good?.

      Current date/time is Thu Dec 12, 2024 9:22 pm