Are Zippy Lipos safe with a Castle MMM Speedy?

[Sammus]

if you have bottom end packs you just cant expect them to perform the same as top end packs. ie. dont try and draw a ridiculous amount of power from them. Dont try and run a 10kg all alloy emaxx at 70mph. gear down!

I was running an erevo on 7s1p a123 through a MMM geared for 35mph and nothing ever got hot or broke or exploded or whatever, and A123s are notorious for shocking voltage drop. I just wouldn't attempt to gear it to 70mph and expect nothing to go wrong unless I had some top end (ie PQ or whatever) battery packs.

Some people just want to go faster than they need to. I've geared cars to go stupid fast, and its pointless. gets boring very quickly once you do it.

[lincpimp]

Wow, it seems like the same question is just getting bounced around here.

A zippy lipo is not much different from any other chinese lipo. If you can correctly estimate the wattage output of your setup you will able to accurately pick a lipo that will work.

Hpi includes the 25t pinion to be used with phatline tires to get the advertised 62mph. No other reason than that.

Getting 40mph out of a MT like the flux with 4s is not the easiest thing for a batt. Getting the same mph out of a 6s setup will pace less load on the batt. The gearing will be lower, the output of the motor will be the same (same top speed) and the voltage will be 50% more... So the amp draw will be considerably lower. So while you need a 4s lipo capable of 130-150 amps cont, you can get away with a 100-120 amp cont capable 6s lipo.

This is pretty basic stuff, if you cannot get a grasp on this you may need to go back to nitro or nikko...