Tired of blowing cells..

[J57ltr]

Originally Posted by HomeGrown

i was running DTX 4200s i've blown like 6 cells of them.. never really had temp problems..


on another note i have a buddy that would trade my 7700 for a 5700 mamba.. think i should do so?.. and if i do wouldn't i be losing speed and torque? i love poppin wheelies on demand.. i only bash but race cars up my street often.. i like to see their when my RC passes them.. i guess i'll opt for the 40c packs.. does it make a difference with a hardcase? because i bash the hell outta my truck and hardcase just seems logical.. whats the pros and cons of a hardcased lipo?

also if i swap motors i could go bigger then just 2s.. i think that 5700 is rated for 5s or 6s lipo..

I bet it was one of the cells opposite the battery leads. I got the batteries real hot one time. We had a pile of dirt where a house was being built next door and a friend and I were climbing to the top. I was running the 7700 and it was geared pretty low (87/12) and I was also using my eagle tree with a temp sensor on the battery, ESC and motor. The motor and ESC was pretty warm around 130 and the batteries stopped at 200 at about 3 minutes into the 6 minute run. I have no idea how it really got because I had accidently set the upper limit to 200. That was measured under the wrap.

I used a Feigao motor (4436Kv) and they are just about identical to the castle cm36 motors. Like the guys said 5-6S would be death, although you can usually get away with it a time or 2. I have run the 7700 on 3S2P A123 and it cranks out some serious power. It's real hard to keep it from flipping a rustler on it's lid and it's kinda like going over a cliff, you still hit those brakes.

I also have a Nemesis blue 6 turn motor (5915 Kv?) and it does very well also. I would say it's probably right along with the CM36 and Feigao motors. I have run it on up to 4S2P A123 and it flies. I have run all these motors on Nimh and wouldn't recomend the 7700 with them. I run mostly on the street which is a little easier on batteries, so if you run offroad a lot you should probably try to get that 5700 or lower when you can.

Jeff