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Jeremy
06-26-2013, 06:52 PM
Hi guys,

I am looking to take out the stock Dynamite 80A ESC and 1800 KV motor from my Impulse 31 V2, and to replace them by a Leopard 3674 1900 KV motor and (probably) a Hobbywing Seaking 120A V2 ESC.

Question about the motor: the Leopard is a 4-pole motor, the stock Dynamite a 6-pole. Does this matter that much in a boat and do you think I'll notice the decrease in torque (if any)?
Is it overall a good choice for a motor?

Question about the ESC: the Hobbywing Seaking 120A V2 only has 2 capacitors. Will that suffice? I run primarily on 4S, planning on using the above Leopard motor, everything else stock (prop, etc.), but with occasional 6S runs as well.
Or is it mandatory to add like 2 extra capacitors?

Or... do you think the Seaking 180A will do a far better job in the above setup? You see, I am looking for a slightly upgraded system, but foremost an absolutely cool-running and reliable setup.

Thanks guys!

iop65
06-27-2013, 04:09 AM
i have a leopard 3674 1700 kv on 5s in this boat ,only using a 40 mm carbon prop because i'm still breaking in my lipo's
120A Seaking with external bec
it is a lot faster then the stock motor with this set-up

motor ,lipo ,esc and ec-5 connectors : barely warm
caps :about 45°C

next thing is to test a 42 carbon k-series graupner prop and a 43 mm cnc,

would not use a 1900 Kv motor on 6s :is going to kill your hardware fast
would not use an unbalanced stock prop either!

Jeremy
06-27-2013, 08:28 AM
What size in mm is the stock stainless prop?

Do you run extra caps on your Seaking 120A?

iop65
06-27-2013, 11:16 AM
no extra caps , have used this controller with the stock 1800kv motor and a turnigy typhoon 500 outrunner on 5s , still in perfect condition

the stock prop is a 40.6mm but with 1.6 pitch

graupner k-series carbon props are 1.4 as the cnc prop