What's the longest runtime I can get?

[Nutbar]

Hey, guys. I have a 36" mono, Leopard 4082 1600kv, Turnigy 180 amp ESC, dual pickup rudder, aluminum water jacket, 0.078 wire drive, and X442 prop.

1. What's the longest runtime I could get on 6s if I am mostly using full throttle on smooth water?

2. What Mah should I get for the longest runtime?

Thx in advance for all responses!

[electric]

There is an app for that.
http://www.offshoreelectrics.com/conversion.htm

Assuming a 60amp draw using two 5000 mah batteries you will get about 10minutes

You really need to measure your amp draw...

[Fluid]

The greatest mAh cells you can buy in parallel will give you the longest run time. As Jim stated, you need to konw your amp draw, since even with a lot of battery capacity you can overheat before you run out of battery capacity. If I had to guess I'd say you are using a bit under 100 amps now, how much under depends on how wet the boat runs, how sharp the turns are, etc.



.

[electric]

At 100amps you will get about 4.2 minutes. Assuming you have 10000mah and you are going to leave 30% in the batteries, thus drawing down 7000mah's and leaving 3000mah's in reserve.

[martin]

The capacity of the battery aside, are you asking what is the longest time you can run your set up at continuously WOT without over heating things.

[viper1]

Correct me if I'm wrong, but shouldn't a correctly set-up boat be capable of continuous open throttle without overheating?
(With the exeption of a SAW set-up to break records)

[martin]

In my personal opinion 35500rpm unloaded in a mono is on the hot side of set ups if run for to long period. keeping closer to 30000rpm unloaded or under & run times will be longer without excesive heat.