MM on 6s A123 and Kb 45 questions

[lincpimp]

I am new to A123 and any help will be much appreciated!

First, what kind or voltage drop do the A123 cells exhibit? I know they are 3.3v nominal, but what kind of discharge can they handle while keeping the voltage ,say, over 3v?

Also, what do you guys think the mm will think of 6s A123? Anyone tried this?

My current setup that I would like to try the A123 packs in is a Ultra GTP with either a kb 45 8l (2300kv) or a kb45 10l (1800kv). Current gearing on 4s lipo puts the 8l in the high 40mph range, and the 10l closer to 40mph.

With the 8l the MM is getting quite hot, so I may add a fan over it. Not much airflow where it is, and cutting the body will not do much either. Motors are getting warm too, but not bad. My trakpowers are keeping up, but I think the 8l is drawing near the max of the MM and the lipos.

So I would like to try 5s a123, in a 2p configuration as I have enough cells to do that. Battery space is not an issue, as I have the entire side open for batts.

Will I notice a performance difference from the 4s lipo going to 5s a123? The trakpowers are good for at least 100 amps with decent voltage, and does not hit the lvc until the end of the run. The 8l is pulling the voltage down, that is for sure. I would also like to try 6s a123 with the 8l motor, but it will be spinning near 45k rpm, and getting near 70mph too. Not sure if the MM will handle that load! Or the motor! I am kind of stuck with the 20/51 gearing, as it the largest pinion I have with a 6mm bore. I cold have the shaft turned down to 5mm, then I could go up to a 24t pinion that I have. That with 5s a123 and the 8l should be fast enough for me.

Here is a pic of the car, sorry about the dust!



Any thoughts, or ideas are more than welcome!