I just got a blackjak 2 :)

[cybertronics]

I just got a blackjack26 brushless and i'm also a newbie in boats. I used nitro model cars about 9 years but i think i have to ask about boats before using to the masters.

I have 2 3s 5000mah 30C and 1 2s 20C 5000mah esc does not support over 20 and i want to connect just one of 3s 5000mah will it work or blown up.

With 3s 5000mah lipos how long can i use the boat. I read almost every post in this topic and other members says 15 min is ok?

I want to change the position of the batteries in the hull. Will this effects the dynamics of the BJ.

That all i wonder now :)

Thanks for help

[Diesel6401]

You can't just use 1 3s or just 1 2s either or will be WAY to slow, but if the 3s and 2s lipo's are the same mah and c rating you can use 1 of each for 5s. If you choose to run this way please dis-able the internal bec. I would advise not to use 2 3s batteries at the same time. The motor can handle it, but the esc will likely blow. If you chose to run 6s (2 3s batteries in series) please change the esc to one that can support the voltage and amp pull,

[cybertronics]

Thank you so much. I use 3s and 2s with same mah and c rating and the boat rocks!. But flex shaft u joint is demaged now. :) i think u joint couldnt handle that much power.