I need help

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

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

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 ;}

XK3665-2150KV Brushless Inrunner

Thanks for your help