Battery Set up for RC8e / MMP - RC-Monster Forums

fastbaja5b · 09:59 PM

Hey guys, wanting to run an RC8e with a MMP, and Castle Neu 2650 on 3s (Still to get the motor so will be a Leopard 36-60-2100kv for now)

Buggy would be set up for racing , geared for 30-35mph max. Servo is an Associated S2008MG which is what they run in most of the RTR 1/8 units, and which I know the MMP can handle quite well as it's in the RTR SC8e.

Would these be sufficient Battery Wise:
http://www.hobbycity.com/hobbyking/s...idProduct=9156

A pair of them in Parallel

Should give a max constant of 6400mah * 18C = 115.2 Amps
Burst - 6400mah * 27C = 172.8 Amps

Would prefer to run PQ packs, as I use these in my Race TC5 and they are awesome, 5050mah 30C and I have more punch on take off than these guys with Intellect 60C packs.

Is this a workable set up?

slimthelineman · 02.09.2011, 10:10 PM

Have used and raced with the 2650 In my rc8be and had friends use it too. It's a beast for sure and draws LOTS of current. The setup could work but with the mmpro I would go as high as I could with the c rating of the packs as I could wieght and size permiting. Wasn't my favorite race setup as it ran hot especially on 3s. Best bet IMO would be a pair of 3k 40c turnigy packs. Or go smaller on the capacity if your only doin 5-7 min runs. I ran 3s 6000 and could make 10 mins but it was close and the track was small.

DrKnow65 · 02.09.2011, 10:18 PM

Why go so low on the voltage? If your going to run two packs why not run 6S and a lower KV motor? You would run cooler, longer, and need a lower C rating on the packs.

Just my humble opinion...

fastbaja5b · 02.09.2011, 10:33 PM

See I am restricted to 3s and Hard Cased Lipos. So while a 6s may be more efficient, it wouldn't be race legal.

Any ideas on what sort of Amp draw the 2650 has? I know the 2200 in a Savage Flux (stock) was pulling 120-125 Amps on a start.

DrKnow65 · 02.09.2011, 11:42 PM

Quote:

Originally Posted by fastbaja5b

See I am restricted to 3s and Hard Cased Lipos. So while a 6s may be more efficient, it wouldn't be race legal.

Any ideas on what sort of Amp draw the 2650 has? I know the 2200 in a Savage Flux (stock) was pulling 120-125 Amps on a start.

Oh yah, it's not realy racing unless there's fire

kidding of course

fastbaja5b · 02.10.2011, 12:06 AM

Lol, 4wd short course have to use a 17.5 Brushless Motor (540 size) as well locally, to keep the 2wd guys happy. Keeping that thing from thermalling in a normal race is the challenge.