Oh #%@!! What did I do to my SMC Lipos?

[Finnster]

Originally Posted by skellyo

I've run my Flux in several situations where it should have put quite a load on my packs and I've had no issues.

I've run it across low grass on 6S with Badlands on it (53mph on GPS even).
I've run it on a track on 4S and 5S packs with LPR Crimefighters on it.
I've run it on a beach on 5S with big ass Losi 420 Sand Wedges on it.

I have not had a single heat issue with any of my power system components in any of those situations. I run the stock 20T pinion and packs are as follows:

2 X 2S 25C Enerland 5100mAh Hard Case Packs
2S + 3S 25C Thunder Power 5000mAh Packs
3S + 3S 25C Neu 4900mAh Packs

Based on my experiences, I'd just simply say ditch the SMC packs and buy something better. I've seen numerous posts on RCtech lately about puffing SMC packs or disconnected balance tap wires. That's enough for me to stay the heck away from buying them. If I were to go buy any new packs for my Flux right now, they'd be Hyperion G3's without a doubt.

I'm quite impressed if you can run 5S on the beach w/ 40s and not fry anything. If I was designing the system from the ground up, I would still use higher voltage/lower kv motor, but whatever works. Its not worth trashing the system tho.

So, it comes down to drving or batts. Unless you are a really rough driver, its gotta be the batts. Best of luck on the next set, but I would really be sure to stick to a known quantity, either Neu, Enerland, Hyperions or the cells Mike sells (the now branded CTech) In fact Mike has a hardcase 2S 5200 pack for the same price you paid for the SMCs. Sucks you are test dummy on these, hope you get some cash or replacement cells back.

[skellyo]

Originally Posted by Finnster

I'm quite impressed if you can run 5S on the beach w/ 40s and not fry anything. If I was designing the system from the ground up, I would still use higher voltage/lower kv motor, but whatever works. Its not worth trashing the system tho.

I was quite surprised myself with the temps of it. Of course when it just lights up the tires no matter the viscosity of the sand, it's not like the motor is having to pull gobs of current to get going.