Thanks again for your replies. I'm fairly set on using a lipoly battery pack for size, weight and high discharge reasons but am certainly open to suggestions.
So 10 kwr 25c + is the aim at this point. I don't have the buggy in front of me at the moment but the battery compartment area is tight. They can be split into packs of varying proportions and set up in different positions around the vehicle of course. Being 'surrounded' by potentially volatile lipoly is something I'd like to get right....I've had a lipo explosion before and it was memorable. So will be going for the highest C rating I can afford...for that reason alone
Tell me what you think of this-- 7x6s gives 155.4 nominal voltage, 13 of those packs at 5ah each gives 65ah which is 10.1kwr. This is 91 individual 5ah 25c/35c burst 6s packs at $86 ea would be $7826 off the shelf from hobby king. If this gave me 15 minutes of hellishing nasty run time I'd be more than happy. Naturally there are a myriad of (better) alternatives.
A warp 9 will produce 400hp for a few seconds and 300hp for about 20 seconds,this is what I'm trying to achieve. A warp 7 or similar would be more suitable as 400hp in a 450kg vehiclele is pushing the ridiculous. However ridiculous is what gets attention in the world of hi performance and here in Australia it's petrol petrol petrol very few understand that an electric powered buggy could give Hayabusa powered counterpart a royal flogging.
I'm not being an idiot here just merely wanting to demonstrate an alternative.
Hillhater, litespeed, amberwolf thanks for your help thus far not to mention everyone else on my previous build. I'll contact jonescg and ripperton as well.
I'm dead ass keen to get this project up and going, I know it'll work