Revolectrix guys, need advice please

[Tamelesstgr]

I'm looking to pick up 2 new 3s packs for my mono. It's a 32" v-hull with a leopard 4082 - 1450kv and a Seaking 180 v2. Should be about 160amp setup on 6s

LBP4082-B/4D 128A 33V 3500W 1450KV

I think a 40C should cover me, but would really like to know if I should consider 60C? Will be trying out a bunch of props, but this is a sport boat / weekend warrior and I don't want to spend unnecessarily. I have been using Zippy Compact LIPOs since last year. No complaints thus far, but I know the REVO's are really well liked. I only have a basic charger right now, it's a Hobby King Quattro that can do 50 watts per channel (4) and I'm using a 350 power supply. I would like to upgrade to something like a Turnigy Reaktor 300w unit later this year.

I'm trying to understand what is the differences in the various chemistries thay have:

Blend 420 60C
Blend 427 40C
Blend 435 40C

Any advice would be appreciated.

Thanks,
Ken

[dmitry100]

Go with the higher discharge Revo's like 70c as they will perform better and last longer without puffing like typical cheapo lipos.
The difference between Blend 435 and Blend 420 is that you are able to charge each cell to 4.35v versus 4.20 volts without puffing.

[Tamelesstgr]

Do I need a special charger capable of charging to 4.35 volts? I don't think mine will do that currently.

[Peter A]

Hi, I use revo silver series (70c) 427 blend. I have turnigy reactor chargers which will charge to 4.27v but I stay at 4.20v. KFX Guy (Travis) did some comparisons and from memory did not get a big speed increase with the extra voltage, although it will give the full 5500mah verses around 5000mah at 4.2v.
For sure the revos will do the job. I would suggest that if you are expecting to pull 160A constant, you may want a bit more headroom in your esc, that may push the SK180 a bit much even though they are a solid esc.

[Tamelesstgr]

I've really struggled trying to figure out what amps the setup will pull If I take the MAX watts for my motor (3500) and divide by 22.2 (6s) that gives me 100% max amps of 158. Assuming that amp value will go down when I am not taking off or turning and of course running an approperiate prop size. I will start small and work my way up and I will be data logging with an EagleTree V4 as well. I think I am leaning towards the Blend 420 60C.

[dmitry100]

420 60c is fine... but 70c is even better.

What kind of charger are you using currently?

I would go with any of their newest "budget" version of CellPro or their top of the line Powerlab chargers...

[Tamelesstgr]

Charger:

http://www.hobbyking.com/hobbyking/s...arehouse_.html

HobbyKing™ Quattro 4x6 can charge four batteries packs simultaneously no matter what battery type you have.
The Quattro 4x6 is equipped with 4 high performance microprocessors to charge each battery individually. It's efficient cooling system ensures safe operation throughout the charge or discharge process.
With the Quattro4x6 you're able to balance charge a lipoly pack on Port-1 while series charging a LiFePo4 or NiMH battery on Port-2. All ports work independently of each other.

Spec:
Operating voltage range: DC 11~15V
Power source: 12V DC
Charge power: 50watts, current is regulated accordingly
e.g. 11.1V battery, charge current approx. 4.5A
e.g. 22.2V battery, charge current approx. 2.2A
Discharge power: 5 Watts, current is regulated accordingly
Cell count : 1-15 Ni-xx / 1-6 Li-xx / 1-10 Lead acid cells (2~20V)
Current drain for balancing li-xx: 300mA

Power Supply:

http://www.hobbyking.com/hobbyking/s...dproduct=19680

HobbyKing 350W 25A power Supply. Light weight and compact, this power supply features dual 13.8v outputs and is suitable for 2 chargers up to 350w (Combined). The HobbyKing 350w Power Supply also features over current and over temperature protection and warning LEDs.

Specs:
Input Voltage: 100~120V AC
Output Voltage: 13.8v DC
Output Amps: 25A
Output Watts: 350W
Temperature Cutoff: Cooling: Single Fan
Dimensions 165.5 x 111 x 50.5mm
Weight: 710g