Are Zippy Lipos safe with a Castle MMM Speedy?

[fastbaja5b]

Don't get me wrong, I love the Castle Creations stuff, had 3 MM's all were utterly flawless, but the MMM has me concerned.

Is it a reliable speedy, and could I recommend it to people as a reliable speedy?

At the moment, I don't think I could. I'd back the Hobbywing 150A to be more reliable particularly on a 6s config with Zippy lipos.

[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...

[RC-Monster Mike]

Originally Posted by truggyracer1

ok, the question i got is how can we purchase the MMM's and them reliable enough to run lesser packs? i cant afford some of the prices for "higher end" lipos so i guess i try it and cross my fingers?

The answer is to not expect the performance of a higher end pack out of the low priced pack you can afford. If you can't afford the "Ferrari" then you can't afford it, but you can't buy a "Chevy" and complain that it isn't a "Ferrari", either.
It isn't the low end packs in and of themselves - it is the low end packs being used like high end packs that are the issue. If you want to see the 60mph speed on the box of the ERevo, you need to have Ferrari packs to do it reliably. If you have the Chevy packs, then don't try to reach Ferrari speeds and you should be fine.

[Jeremy1976]

Originally Posted by RC-Monster Mike

The answer is to not expect the performance of a higher end pack out of the low priced pack you can afford. If you can't afford the "Ferrari" then you can't afford it, but you can't buy a "Chevy" and complain that it isn't a "Ferrari", either.
It isn't the low end packs in and of themselves - it is the low end packs being used like high end packs that are the issue. If you want to see the 60mph speed on the box of the ERevo, you need to have Ferrari packs to do it reliably. If you have the Chevy packs, then don't try to reach Ferrari speeds and you should be fine.

Great metaphor!

[MetalMan]

Originally Posted by RC-Monster Mike

The answer is to not expect the performance of a higher end pack out of the low priced pack you can afford. If you can't afford the "Ferrari" then you can't afford it, but you can't buy a "Chevy" and complain that it isn't a "Ferrari", either.
It isn't the low end packs in and of themselves - it is the low end packs being used like high end packs that are the issue. If you want to see the 60mph speed on the box of the ERevo, you need to have Ferrari packs to do it reliably. If you have the Chevy packs, then don't try to reach Ferrari speeds and you should be fine.

Or, run two such Chevys in parallel to achieve the Ferrari capabilities

[truggyracer1]

i agree nicely explained! i like most people these days can't afford much wanting great performance but with a light wallet i might rethink using zippy packs and look for something else??

[truggyracer1]

what if i ran 2 5000mah 3s zippys to a MMM? would i be seeing the same kind of spiking?

[lincpimp]

Originally Posted by MetalMan

Or, run two such Chevys in parallel to achieve the Ferrari capabilities

Nah, not even close... Nothing like a ferrari... Not that I really like them that much, but they are fun to drive. Like comparing a 4 cyl sportbike to a built buell. Anything that can turn high rpms and pull stupid speed is in a league of its own..

[sikeston34m]

Originally Posted by RC-Monster Mike

The answer is to not expect the performance of a higher end pack out of the low priced pack you can afford. If you can't afford the "Ferrari" then you can't afford it, but you can't buy a "Chevy" and complain that it isn't a "Ferrari", either.
It isn't the low end packs in and of themselves - it is the low end packs being used like high end packs that are the issue. If you want to see the 60mph speed on the box of the ERevo, you need to have Ferrari packs to do it reliably. If you have the Chevy packs, then don't try to reach Ferrari speeds and you should be fine.

Ummmm..........I don't understand!

The Chevy packs would be the best ones.

Now if you had said "Ford Packs", I could understand the lower quality.

[JThiessen]

Well, there have been failures on other packs as well - most recently on a set of Mikes packs. Whether or not these failures had anything to do with the batteries, I'm not qualified to answer. (or if having a different set would have prevented the failure).

[RC-Monster Mike]

I will put the performance of my packs against any other out there. The recent failure that happened to be using my packs is of a different type than described in this thread - the gearing was low enough for even the lower end packs when the failure occurred and seems to be unrelated to the batteries - I am not going to speak for Castle or anyone else on the particulars, but i can say with certainty that my batteries are NOT a problem, as I did pretty extensive testing (almost a year) before offering the packs for sale. :)

[JThiessen]

Originally Posted by RC-Monster Mike

I will put the performance of my packs against any other out there. The recent failure that happened to be using my packs is of a different type than described in this thread - the gearing was low enough for even the lower end packs when the failure occurred and seems to be unrelated to the batteries - I am not going to speak for Castle or anyone else on the particulars, but i can say with certainty that my batteries are NOT a problem, as I did pretty extensive testing (almost a year) before offering the packs for sale. :)

I thought that as well (regarding the type of failure), but didn't feel comfortable enough with my knowledge level to say one way or another.

[shizzon]

Originally Posted by JThiessen

Well, there have been failures on other packs as well - most recently on a set of Mikes packs. Whether or not these failures had anything to do with the batteries, I'm not qualified to answer. (or if having a different set would have prevented the failure).

hopefully your not talking about my mistake of hooking up mikes 5s 2500mAh packs in series instead of parallel, that is obviously not the monsters fault when it failed.

And on a side note the packs performance is off the charts!!! Thanks Mike!

[emaxxnitro]

Originally Posted by sikeston34m

Ummmm..........I don't understand!

The Chevy packs would be the best ones.

Now if you had said "Ford Packs", I could understand the lower quality.

right on! rofpimp!