HELP with a Feigao 540 8L motor

[mechengineer03]

I have a Blizzard Rigger boat, I am running a Feigao 540 8L motor with a 120amp water cooled ESC. It has an x535 prop, how many li-po's can I safely run on this boat?
Obviously I want to run as many as I can to achieve the maximum speed possible but I'm just not sure how many I can safely run without burning everything up.

I have several 3S, 4S and 5S that all fit in the boat OK,

PLEASE HELP if anyone can help me out with this.

THANKS in advance for anybody's help.

TODD

[ghostofpf1]

4s would see that 3000+ kv motor turning around 45000 rpm...too much for that motor if you want it to last IMHO...
Steve

http://www.rcboataholic.com/fe_calc.htm

[kevinlew211]

Todd,
go with 3s and prop up, you should be ok with x440, x640, x442

[mechengineer03]

OK Thanks guys for your input and help, I greatly appreciate it.

TODD

[Jeff Wohlt]

I told him the same on 3S on RRR but thought he should try the 435 first since he is only running a 120 amp ESC.