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Author Topic: Tamar battery location  (Read 571 times)

rg197r27

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Tamar battery location
« on: April 13, 2018, 10:09:38 AM »

I am finally getting around to finishing my 1:12 Tamar I was wondering where members have installed there lead acid batteries either forward of the motors or along side the motors please advise


Thanks in advance


Rich

CJ1

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Re: Tamar battery location
« Reply #1 on: April 13, 2018, 12:29:45 PM »

Hi Rich,
I put mine on trays, either side and just aft of the motors. They can slide fore and aft on the trays to help trim the boat. Then held down by velcro straps.
Chris
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Neil

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Re: Tamar battery location
« Reply #2 on: April 13, 2018, 04:06:15 PM »


RICH......you need your batteries as low as possible to stop rolling of the boat especially at high speed turns.


if you are running on brushless motors I wouldn't use sealed lead acid either, but lipo's.......and these could be Velcro taped into the bottom of the hull forward of the motors and speed controllers.


neil.
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Flundle (Speedline Models)

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Re: Tamar battery location
« Reply #3 on: April 13, 2018, 05:12:55 PM »

Rich, if I were you I would put the batteries (two 4cell lipos) up front and as low as possible. The Out-runners for this model (BL4030) will cause lead acids (and maybe Nicads too) to stall internally resulting in the motors pulsing every second.
The Tamar naturally leans into turn so the C of G needs to be as low as possible.
Put the lipos along the keel, well forward of the motors.
Adrian
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kinmel

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Re: Tamar battery location
« Reply #4 on: April 13, 2018, 10:13:19 PM »

The model is powered by brushed motors. Each has 2 wires from it's Esc.

Batteries still need to be forward and as low as possible.
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Neil

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Re: Tamar battery location
« Reply #5 on: April 13, 2018, 10:33:45 PM »



The model is powered by brushed motors. Each has 2 wires from it's Esc.

Batteries still need to be forward and as low as possible.


YES!!!........that one in the pictures is, but is not the boat that Rich is asking about...........and I think that both Adrian and I are on the same track that Rich from Jersey might be running on brushless and so the point of lipos vs sla batteries was noted.


thought I might point that out to him if he is, as both Adrian and I suspect.


I did, funnily enough know also that the boat in photo is also running on Electronize ESC's which even I know won't take brushless motors as they also only have two wires going to the motor.........comes from having just a little experience of building models in the past that have all run on brushed motors and electronize esc's.........somethings you get used to.
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