5s or 10s A123 setup for boat?

[gimpygolden]

Originally Posted by lincpimp

For your setup and desired speed the 36mm can xl would be a better choice.

Just piced up a 32" mono and a mean machine cat... Less than 200 bucks for both shipped, and both have hardware... Not sure what I plan to run in the cat, but the mono will get a 14xl on 8s lipo. Most likely going to snag a turnigy hv esc, and I need another 60 amp esc for 3s usage in my mini mogli boat... Plus the big gas boat needs some work on the hardware, dual rudder conversion and fooling with the surface drive... I have work to do. Tomorrow will be a batt building day for gimpy, I have had his stuff for too long....

Sounds like a really good deal. What is the mono,just curious?
I just picked up a mini. Its a Velocity mono from minicatracing.com cool little boat, supposed to run mid 30's on 3s we'll see I guess.

[gimpygolden]

Linc did you get anywhere with the ThunderPower packs,still good?

[lincpimp]

Originally Posted by _paralyzed_

hyperion will do.......

just such a perfect opportunity

I can do that!

Originally Posted by gimpygolden

Sounds like a really good deal. What is the mono,just curious?
I just picked up a mini. Its a Velocity mono from minicatracing.com cool little boat, supposed to run mid 30's on 3s we'll see I guess.

Originally Posted by gimpygolden

Linc did you get anywhere with the ThunderPower packs,still good?

Not sure what the mono is. It has some damage, but that is an easy fix. I am going to custom paint the armada...

The minicat boats are good, I know you will enjoy it. I have a 13" mirco from mhz and it runs great with a 4700 28 size motor and 2s lipo. I run a mamba 25, so I even have reverse!

[gimpygolden]

I hope to run her this weekend, need to find a better pond the one I run now is all full of weeds.

[gimpygolden]

Originally Posted by nitrostarter

Honestly, I highly doubt this is the case. Most guys there run boats that are setup to spec. N, P, Q classes, etc... They are listed as to which battery setups are used.

Have a look at this chart:
http://www.castlecreations.com/suppo..._boat_apps.pdf

Great chart as a guideline for lower voltage setup's but not much help as I'm looking at going HV.

I guess all I really want to know is, is there any draw backs to going HV.
I realize lower volt setups are tried and true and probably even a few buck$ less, but in an effort to put less stress on these cells wouldn't a High Voltage setup be the way to go?

[zeropointbug]

For lowering cell stress, yes, HV will reduce it a small amount, not much.

The system as a whole will be more reliable however (usually), because of less resistive heat losses; wires, esc, motor...

[gimpygolden]

So since I've got one of these kicking around
http://www3.towerhobbies.com/cgi-bin...&I=LXHYK6&P=ML
do you think it will cut it for the 10s setup if I add watercooling or just not enough?

[zeropointbug]

Hmm, that would be pushing the limits of that ESC pretty hard. I don't really know how Kontronik rates their controllers vs. realworld, but I would say a ~80amp continuous controller is what you need. But you never know, you could just try this one out for a while, go easy on it, check the temps and keep pushing it until you are satisfied. Water cooling system just might do it though.

[gimpygolden]

I have one sitting in an e-Raptor converted heli that I'm not using.
I think I'll try it out on a small prop & watch the temps.

[zeropointbug]

yah, do that, cuz with water cooling, you tend to need a less rated current capacity compared to surface vehicles. Try it, and report back with temps, and the go from there.