5s or 10s A123 setup for boat?

[nitrostarter]

Ok, let me rephrase my words.

A123's are ok in a boat. However, Quality high capacity lipo's are a must in Fast Electric Boating.

A Titan 29 would be a waste at speeds of 22mph... Buy Villian or Kyosho for that.
The Titan is a very capable boat and loves to run 40-45mph in light chop. I would run a 4s2p Lipo setup with a Feigao 10XL and a X445 prop and see low to mid 40's all day. Or maybe a 1515/1Y on 4s2p Lipos with a X442 of X640 and see 50's all day.

[zeropointbug]

Actually, I am pretty sure it is 25mph, it is quite fast!

I agree, for fast boating, lipo is probably needed... but then again, NiMH used to be used to extremely fast boats! IIRC, speeds of around 70mph...! A123's are only more powerful than NiMH.

I am not pushing the 5s pack to the limits, and he plans to use twice as many cells, it should be a 1000watt+ setup if done right.