Are Zippy Lipos safe with a Castle MMM Speedy? - Page 16 - RC-Monster Forums

JThiessen · 03.17.2009, 05:17 PM

Quote:

Originally Posted by shizzon

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!

Nope....I didnt even see that one! I'll have to look that one up....should make for some good reading!

shizzon · 03.17.2009, 05:25 PM

Quote:

Originally Posted by JThiessen

Nope....I didnt even see that one! I'll have to look that one up....should make for some good reading!

ill sum it up for you, i was showing my friend the power of brushless and mistakenly grabbed my series connector that i normally use for my 2s batts instead of my parallel one....truck ran fin for a minute or two, and surprisingly i didnt even no there was a problem until the truck just stopped....just a really stupid mistake.

JThiessen · 03.17.2009, 06:08 PM

Quote:

Originally Posted by shizzon

ill sum it up for you, i was showing my friend the power of brushless and mistakenly grabbed my series connector that i normally use for my 2s batts instead of my parallel one....truck ran fin for a minute or two, and surprisingly i didnt even no there was a problem until the truck just stopped....just a really stupid mistake.

Could you tell power wise that you'd hooked up 10S? Or did the MMM limit the power enough that it wasn't noticable?

fastbaja5b · 09:00 AM

After reading and rereading this I'm going to be err on the side of caution.

Polyquest 6000mah 25C 3s Lipos
http://www.rc-monster.com/proddetail...pq3s6000mah25c
Would they be more appropriate?

Raze ST Truggy · 09:02 AM

Quote:

Originally Posted by fastbaja5b

After reading and rereading this I'm going to be err on the side of caution.

Polyquest 6000mah 25C 3s Lipos
http://www.rc-monster.com/proddetail...pq3s6000mah25c
Would they be more appropriate?

Those are some potent packs and are built with Enerland cells. With a 150A continous discharge rate I can't see those not being up to the job.

I
-Brian

skellyo · 09:02 AM

Quote:

Originally Posted by fastbaja5b

After reading and rereading this I'm going to be err on the side of caution.

Polyquest 6000mah 25C 3s Lipos
http://www.rc-monster.com/proddetail...pq3s6000mah25c
Would they be more appropriate?

You may want to verify that the height of the 6000mAh pack will work in the Flux. I thought the trays were only 30mm, so I'm not sure if it will fit.

fastbaja5b · 03.27.2009, 08:33 AM

The Zippy H everyone uses are 51mm high which is shorter than these, actually the 2s Hardcase Lipos I use are 45mm so should be ok.

skellyo · 03.27.2009, 08:35 AM

Quote:

Originally Posted by fastbaja5b

The Zippy H everyone uses are 51mm high which is shorter than these, actually the 2s Hardcase Lipos I use are 45mm so should be ok.

The thickness of the pack is what I'm talking about, not the width of the pack.

Sammus · 03.27.2009, 08:58 AM

6000s wont fit. Wish they would, theyre the ultimate powerful lipos :)

edit: oops sorry. wont fit in the erevo, didnt realise you were talking about a flux. dunno how big those trays are.

03.27.2009, 09:54 AM

I now have about 3 months with the 3S 5000 20-30C zippys racing several times a week with two different trucks E-revo and e-maxx using the MMM 2200 combos. I can say these batteries are as good as any other battery i have bought for this application - includes neu energy and maxamps. Yes I gear for 40-45Mph. I have run them however geared for 55mph going up and down the street until we were bored with no issues.
I will point out that when going down to 4S with the neu energies the batts get VERY warm which is ok given the different voltage and increase in current.

I think all of this talk about zippy not safe with a MMM is hogwash. I have 3 MMM and had failures long before i got into the zippy batts.As a matter of fact i havent had a failure since we have been using Zippy's. Are they as high quality - i am not going to even try to argue because i am sure in extreme situations they arent as good as Mike's batts because we are sure they arent.
However I had a buddy open up a zippy-H and compared serial numbers to the PQ - guess what they are similar - their is a belief that these zippy H's are PQ Enerland 30C rejects - thats why they put 20-30C on the batt. for 50 dollars i can buy 3 of these vs a neu energy equivalent. I can say that they seem to be holding up better than the older generation of Maxamps batts 6000 and 8000 i was using till they all puffed. Although we have had much better performance out of the 8400 35C Maxamps (no puffing).
Time will tell for sure - ie how long will these batts last - how many cycles.

In the end its nice to know mike has the best batts if you need them.

Sammus · 03.27.2009, 05:32 PM

I thought the rhinos were enerland rejects or something because the cells are the same size and mah as a lot of PQs. The zippy cells have difference dimensions to any of the enerlands, so I'm pretty sure they come from another factory. That and even hobbycity tell us their cells come from a chinese factory, and enerland is korean as we all know.

johnrobholmes · 03.27.2009, 05:40 PM

Enerland has china factories now too.

Sammus · 03.27.2009, 05:51 PM

I stand corrected. I've still never seen enerland based packs that have a 150x50 footprint. could be wrong there too. maybe all the zippys are in fact re labelled PQ packs ;)

Finnster · 03.27.2009, 06:23 PM

Quote:

Originally Posted by Sammus

I stand corrected. I've still never seen enerland based packs that have a 150x50 footprint. could be wrong there too. maybe all the zippys are in fact re labelled PQ packs ;)

Maybe PQ's are relabeled Zippy packs! 0_o

Chadworkz · 07:45 PM

Wow, I must say, I am now thoroughly confused and scared to death...heh!

A few details;
I have a nitro 3.3 Revo that I converted to brushless using Mike's RCM motor-mount and custom carbon-fiber Battery/ESC/RX trays that I made. It has the V3 MMM/2200kV combo running through the nitro transmission with a forward-only conversion, Pro-Line Bow-Tie MTRs on Pro-Line 23mm ½" off-set Velocities, a ton of carbon-fiber, titanium, & other lighter-than-stock parts throughout...and I am also planning on running the brakes & reverse via the motor.

I was planning on running a pair of Zippy Flightmaxx 4S 2650mAh packs in parallel for 14.8v @ 5300mAh, but am now questioning that choice after reading this thread, but wanted to ask a few questions before I make my final decision.

I am not a speed-freak, and I am not going to race, I just want a quick truck that is reliable enough to bash around the yard, in the chert-pit, and do jump-tricks off of my ramp...maybe 35-40mph max. Right now, besides the batteries, my biggest question is gearing, and about the transmission...

...is the overall gear-ratio of the nitro Revo transmission any different than the E-Revo transmission? If so, what spur and pinion would you guys suggest for my setup and what I want out of the truck, as well as if the ratios are the same for both transmissions? Like I said, I don't want all-out speed, just 35-40mph and reliability enough to do what I said above. As for the batteries I chose, I believe they will work just fine for my needs, but I really want to make sure before I damage something, and I would really appreciate help from you guys since you really know your stuff.

Thank you so very much for any help you guys can provide, it will be much appreciated!

P.S: I am going to run a set of Mike's V3 1/8 Revo Hybrid Diffs (buggy ratio) in the future, so I may need some help selecting a spur/pinion for that setup as well...