Are Zippy Lipos safe with a Castle MMM Speedy?

[Chadworkz]

They are 30C/50C batteries...and thank you guys for the replies, I really appreciate it!

Edit: Different vehicle, but what pitch is a 1/8 center-diff spur? I am almost positive it is an Ofna 55t spur, but I think all 1/8 spurs are the same? Anyway, I believe it is Mod-1, I just want to make sure...thanks.

[emaxxnitro]

so neu 30c 5000's should be great cells for the mmm right. all i have fed my mmm up till now is maxamps and zippy.

[Sammus]

neu cells are about a billion times better than maxamps, and probably nearly twice as good as zippy, so you should be right to go :p

but in all seriousness, wtf? a couple of idiots trying to set the land speed record on cheap dodgy batteries break there car and suddenly theres 17 pages of fear that you cant run the mmm with anything less than the aboslute pinnacle of battery tech. geez chill out guys, I often run 2300mah A123 cells in 7s and haven't had a problem with it. ANY 4000mah 6s lipos are going to be better suited than that. just dont do anything stupid. and emaxxnitro: that means if you really do want the worlds second fastest erevo, yes you will need good cells.

and btw, what is a mamba monster pro?

[Sammus]

Yeah, I'm pretty certain the Neus are enerlands. Not 100% though.

I agree with a lot of what mike says but at the heart of the issue is that people who are making an assumption about a particular battery without seeing any real discharge data or long term performance data based what appears to be on the cost of the battery. ie low cost HAS to be an inferior product. sometimes it is and sometimes its not.
id like to see a discharge curve on a 3S 30C FLIGHTMAX VS a neu vs one of mikes batteries( i just ordered one myself). To this point i have pushed my brushless erevo and emaxx very hard with tall gearing with 6S 20-30C zippy lipos and have had no issues.
i have not had any failures with the neus, i have had failures with older Maxamps but not their new 35c packs. I think these are very very good packs but at the wrong price point.

[jhautz]

This whole discussion is just ridiculous from what I see. I haven't read this whole thread, just pieces of it (as it rather long now), but it really just smacks of CC trying to find something to blame for the early failures of their MMM units. Zippy's being low cost are pretty popular out there and they saw a few failures on the Zippys and bingo. An easy scape goat.

I run many different kinds of packs including zippy 20-30c, zippy flightmax 30c, Neuenergy 30C and 25C, Enerland PQ 25c and 30C, etc... AND I have had many MMM die on me. I prefer not to state the number of replacement that CC has sent me. (Its actually pretty ridiculous.) But now I finally have 3 units that have proven to be reilable. Nothing else has changed in the setups, just the MMM units and these 3 are now lasting. It just ook going through a ton of MMM units that weren't up to snuff to finally find 3 that were.

To be fair, I only had one MMM fail violently. and it wasnt when I was running the zippy packs. The rest were all quiet deaths or small poofs of smoke and dead.

I seriously think this thread is blown WAY out of proportion. And dont get me wrong. I think CC is a great company and makes some really good stuff. But the early MMM units were not a good example of CC's best work.

[RC-Monster Mike]

As a general rule, you get what you pay for. There are of course exceptions to every rule. Hobby City freely admits that their Zippy and Flightmax packs are lower end packs - expect less cycles and lower charge rates vs. the higher cost packs(there is a quote on the boards here somewhere). They are a good "value", but the expectation that they are the same quality and performance as a higher end pack costing 2x as much is unrealistic. This doesn't mean they won't work or are "bad", but we have to be realistic. Likewise, your idea of "pushing your erevo and emaxx brushless very hard" may differ from someone else's idea of the same, which is part of the danger of the internet - no 2 people operate in exactly the same conditions, so a lot of info requires speculation.
I also agree on the newer Maxamps packs - very good packs - pricey perhaps, but far better than their previous generation. :)

[Chadworkz]

black mamba, that was perfectly said!

You know what we need for lipos? Official or at least semi-official groupings. Just like the nimh packs had. Those that were into nimh knew we had entry level sport packs, mid-grade packs, club-level racing packs and uber spendy, matched/zapped, all out competition pro-level packs. Now the lipo companies and industry leaders need to get on board and make it happen. This will help ease the confusion of getting into lipo for the newbies and maybe those not so new to lipo as well.

[Chadworkz]

black, you nailed it again.

[Patrick]

Yeah you always new what you were getting with nimh/nicad matched packs. The 5 year old GP3300 I have here has a label saying cell one is
421 SEC 1.171 AV
16 IR
.90 CutOff 5000vCo (whatever that is)
30A DIS 6.0CHG
and every cell has a label like that. Who knows what different lipos will actually perform like just from looking at their specs.

[Chadworkz]

Yea, with NiXX packs you got truly *matched* cells, but I don't think anyone matches Li-X cells, or does any kind of true testing.

Any one have new info with running Zippy paks they'd like to inform us about? I'm selling my SMC's as they are to finicky and gonna buy Turnigy or Zippys next spring

[JThiessen]

Mine are still holding strong. My brother in law puffed one pack due to likley overdischarge.

[Unsullied_Spy]

For a while I was running my Muggy with stock tires and a 16T pinion (found out later that this was geared for ~90MPH on 6s) and being rather brutal on the throttle and it held up to this for nearly an hour of total use. It held up fine under the Zippies but when I dropped down to a smaller pinion and switched to my Maxamps packs it smoked like a chimney, hmmmm.