patrick

iTrader: (72)

So I know the way most guy's are doing it is by running 6 cells with a low kv motor. I would like to do it with the motors and batteries I already have. My question is can I safely use my Hyperion 6500 mah 4 cell with a TP 5000 mah 2 cell pack wired in paralell to efectively give me a 4 cell pack with 9000 mah?

Thanks for your help.

gottabaja

iTrader: (3)

I am pretty sure that is a no go, the 2s will run out of juice way before the
4s will and may damage the cell's.

I would try to get 2 4000mah 3s and run them in parallel so then you will have a 8000mah 3s.

I tried to run 2 2s in parrallel one being 5200mah and the other being a 4500mah and damn near ruined the smaller of the 2 batteries.

litoo7

iTrader: (2)

Making 20 mins also depends on the track. If you have a fast and open then mostly like you will be not make it. Also gearing is a big factor in making the 20 min.

I make 20 mins in my losi truggy running a 4 cell 5800mah. It also depends on the driving style.

I dont think about you can run that battery setup but honestly I dont know.

305997

iTrader: (7)

Parallel......no way! To run parallel, you absolutely have to be at the same potential (voltage). And since you will be pushing the limits of capacity, I would avoid running in series for 6S as well.

JG!

iTrader: (25)

some info here

http://www.rctech.net/forum/electric...ggy-setup.html

patrick

iTrader: (72)

OK so I won't do it that way. How about if I get 2 3s 5000 packs and wire them in parallel. Anybody see a problem with that?

brickshouse

iTrader: (7)

That things gonna be heavy, its all in track size and driving style, I can barely make 15 min. and another guy with exact same setup can get 20, goes to show. Good luck

patrick

iTrader: (72)

Thanks brickhouse, but I don't see how you can only get 15 min runtime with 10,000 mah. Am I missing something?

specgie

iTrader: (79)

because wiring two 5000mah packs in parallel still equals 5000mah

Turbo900rr

iTrader: (24)

Umm...NO. Its not black magic its basic ohm's law. parallel adds the capacity. i.e. 2 7.4v 5000mah packs parallel is 7.4v 10000mah.
Series adds the voltage. 2 7.4v 5000mah packs series is 14.8v 5000mah.

Run a low kv motor. I run a 1700 kv motor geared the same as nitro on 4 cells. If it came with a 15 tooth clutch bell, run a 15 tooth pinion. The speed will be real close between nitro and electric but you will still have way more grunt outta the corners and you will see the 20 minute runtimes you are looking for.

glassdoctor

iTrader: (4)

1700-2000kv and a maxamps 4s 8000 will do it easy. Or drive with some restraint and use their 6500 pack. These bigger packs add a bit of weight, but then... some run a truggy size motor which also adds weight, and think nothing of it.

8ight-e

iTrader: (58)

what system are your running that a hyperion 6500 alone can't get you 20 minutes? I can race my tekno 8t truggy and get 17-18minutes full out and win the a-main with that battery.. in my buggy I'd be about 21 min run time. I suggest snagging one of those tekno buggy motors (lektron) that is what I'm using now and it's amazing in a 1/8 buggy not to big, just right for speed and torque... it's a sick little motor and has good effeciency.

PS never pair two packs that don't match, your asking for issues. When you parallel packs they must match (voltage and all) Keep in mind our ESC's can ONLY READ pack voltage not cell voltage.

brickshouse

iTrader: (7)

i am using a 5400, as is the other guy that can make 20min, maxamps 6500 is $279, couldnt imagine the 8000 didnt know they made one

8ight-e

iTrader: (58)

The hyperion g3 6500 is as good if not better for just about 1/2 the price of that ma 6500 pack (most say hyperion g3 are the best you can buy) but I've never run the ma 6500 myself to compare.