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Hilly32 View Drop Down
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  Quote Hilly32 Quote  Post ReplyReply Direct Link To This Post Topic: I need help
    Posted: 27/Jan/2012 at 8:12am
I would like to know if a turnigy 4s 5000mah battery is good for a 120a trackstar speed controller and a 2150kv turnigy motor? Would someone please tell if that is the right electronics for a 900mm long catamaran?
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  Quote KaosKane Quote  Post ReplyReply Direct Link To This Post Posted: 27/Jan/2012 at 8:24am
N5000.4S.35 Turnigy nano-tech 5000mah 4S 35~70C Lipo Pac 1 Reserved

Turnigy nano-tech 5000mah 4S 35~70C Lipo Pack
This is the minimum discharge rate u should use Imo

or this one would allow max current draw with less voltage drop

     Turnigy nano-tech 4000mah 4S 45~90C Lipo Pack

General rule is more Crate for discharge less puffing and longer batt life
In a plane i normaly crash hard and bend the lipo b4 it is overused.

I would think in a boat u could run a water jacket over batt esc and motor this would also lenghten batt and motor life so as long as u dont Titanic it u should be AllGood.

As for correct electronics not enough detail to be sure but my rule is use what u got first even if it is not perfect it is probly good enough, and design thinking and labour time can overcome any small incompatability.
HTH

Edited by KaosKane - 27/Jan/2012 at 8:29am
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  Quote keel1 Quote  Post ReplyReply Direct Link To This Post Posted: 27/Jan/2012 at 8:27am
Hilly,
I know the 120a turnigy ESC is only rated for 2 to 3s lipo.I have run them using a 4s and they have coped but i would recommend a 180a Esc that way you will have no probs.
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  Quote KaosKane Quote  Post ReplyReply Direct Link To This Post Posted: 27/Jan/2012 at 8:34am
Originally posted by keel1

Hilly,
I know the 120a turnigy ESC is only rated for 2 to 3s lipo.I have run them using a 4s and they have coped but i would recommend a 180a Esc that way you will have no probs.



Test it with a 70% charged 4cell to keep peak volts down. :}
use a HK wattmeter to keep max wattage the same as max on 3cell to begin with. i use trim tab on the throtle chanel to get watts excatly right.

HTHtoo

ps thanks for extra info

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  Quote Hilly32 Quote  Post ReplyReply Direct Link To This Post Posted: 27/Jan/2012 at 9:53am
Sorry these are the products I have been looking at,
Turnigy 160A 1:8th Scale Sensorless ESC w/Fan
Turnigy nano-tech 4500mah 4S 25~50C Lipo Pack
Turnigy 2150kv senorless brushless motor
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  Quote KaosKane Quote  Post ReplyReply Direct Link To This Post Posted: 27/Jan/2012 at 10:46am
Originally posted by Hilly32

Sorry these are the products I have been looking at,
Turnigy 160A 1:8th Scale Sensorless ESC w/Fan
Turnigy nano-tech 4500mah 4S 25~50C Lipo Pack
Turnigy 2150kv senorless brushless motor



i cant find the motor please copy and paste the link ;}
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  Quote Hilly32 Quote  Post ReplyReply Direct Link To This Post Posted: 27/Jan/2012 at 10:51am
Turnigy nano-tech 5000mah 4S 35~70C Lipo
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  Quote Hilly32 Quote  Post ReplyReply Direct Link To This Post Posted: 27/Jan/2012 at 10:52am
XK3665-2150KV Brushless Inrunner
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  Quote keel1 Quote  Post ReplyReply Direct Link To This Post Posted: 27/Jan/2012 at 11:29am
Hilly,
You shouldn't use an ESC with a fan in a boat as they are a sealed unit when running and cannot suck any air.   You need to look at the water cooled ESC's as these are made especially for marine purpose.The fan units are used for cars ETC.
Hope this helps.
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  Quote Hilly32 Quote  Post ReplyReply Direct Link To This Post Posted: 27/Jan/2012 at 11:47am
Thanks for your help
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