brushless conversion questions

[Arct1k]

No external bec required with MMM as it has a switching one - mixed results on maxamps with 5000 cells on 1/8th cars. Enerland / polyquest / Neu are nice at 5000 4s/5s. ATB

My lhs is overpriced as well, but there were weekend when I would break something on my T4 and I could drive up and buy the overpriced part so that my weekend was not ruined (instead of waiting till midweek for parts via internet).
Whereas I bought my mp777 roller before checking to see that none of the 3 hobby stores in town carry kyosho parts, so if it breaks on Saturday (practice) I am out of the game on Sunday, unless it is one of the parts I have spares of. Although I always seem to break something I don't have any extras.

Edit:
Maxamps aren't very well liked on this board. I have some and they seem to run great, but I don't have much experience with them yet. Additionally you can't be quoted a runtime without picking the mah as runtime is dependant on mah.

[rcsammy]

hmm well if i go for an X1CR or a hyper 7 i already own nitro versions of them so i have a few spares, although the hyper 7 is a bit old for racing

i tried the calculation for continuous rating (mah capacity x C rating = continuous rating) i picked one at random its 4s 6000mah 20c(what does the C stand for?) so i get 120,000 does that mean 120A continuous?
then there is a 5000mah 25C version which works out at 125A continuous

one other thing is a charger, do i need a seperate balancer(right word?) and charger or do they come in one
does anyone have any recommendations?

[BrianG]

Originally Posted by rcsammy

...i tried the calculation for continuous rating (mah capacity x C rating = continuous rating) i picked one at random its 4s 6000mah 20c(what does the C stand for?) so i get 120,000 does that mean 120A continuous?
then there is a 5000mah 25C version which works out at 125A continuous

one other thing is a charger, do i need a seperate balancer(right word?) and charger or do they come in one
does anyone have any recommendations?

When you do the calculation, remember that 1000mAh = 1Ah. So yes, 120,000mA = 120A.

Some chargers like certain Hyperions and FMA have built-in balancers. Personally, I like outboard ones for a little more versatility...

C is the dischare or charge rate.
1C =1xstored energy
aka if you have a 5000mah battery
1c (you usually charge rate) = 1x5000mA =5A
or 20C (battery discharge rate) =20x5000mA = 100A
Most batteries will post multiple C numbers for discharge: the most common is the continous, but they may also post a peak or burst or susutained or whatever other word they feel like using. But Continuous is the number you would care about most of the time.

[rcsammy]

is it possible to talk to any of you guys on MSN messenger about lipo batterys? as i have been looking around and im now very confused and have lots of questions which would take a lot of forum posting