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HomeAircraftHelicopterHelicopter Main Discussion › 12S C rating importance?
09-22-2013 08:10 PM  5 years agoPost 21
Craigdieslemac

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Valdosta, Ga USA

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I youtube'd it.. It's on there lifting 50lbs.. They add the weight of the batteries on top of that, which I don't understand..the batts are as much a part of the thing as the motors and props, not going anywhere without them.

Aut viam inveniam aut faciam

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09-22-2013 08:15 PM  5 years agoPost 22
McKrackin

rrProfessor

Lucasville,Ohio

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But what do the batteries weigh? A couple pounds?

AMAZING is what it is...with or without counting battery weight.

I literally never use the word literally right.

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09-22-2013 08:22 PM  5 years agoPost 23
Craigdieslemac

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Valdosta, Ga USA

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Yea.. It's pretty good.. I think it held it for 12 seconds or so. It had 4 6s 5000mah.. I bet it cooks them.. Lol.

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09-22-2013 08:28 PM  5 years agoPost 24
McKrackin

rrProfessor

Lucasville,Ohio

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I was watching it with 30 pounds(three ten pound plates)and it flew on regular forward flight for two minutes and landed by touching down on 4 bricks...one arm on each brick...Super accurate.

Awesome machine.

I literally never use the word literally right.

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09-22-2013 09:49 PM  5 years agoPost 25
Craigdieslemac

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Valdosta, Ga USA

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Agreed.. It's pretty awesome

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09-23-2013 01:50 AM  5 years agoPost 26
BladeStrikes

rrElite Veteran

Shelby TWP,Mi

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I had the Nano-Tech 3300mAh 130C discharge and the Gravity 3300mAh 30C Discharge.Both sets were brand new for my 12S 600 EFL Pro and the Nono-Tech were garbage..Around 40 cycles they dropped a good amount of power and around 75 cycles they started puffing..On top of it,the Nonos were heavier..
The Gravity packs are 20000000X better and you'll get hundreds of cycles with the same power without puffing...I wouldn't waste money on Nanos..

BTW,
You can search youtube with 600E's and 700E's picking up 50LBS with Zippy lipos and just about everyone knows them are junk lipos..

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09-23-2013 04:02 PM  5 years agoPost 27
Richardmid1

rrProfessor

Leeds, England

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You kind of answered your own question in that first post Mckrackin!

Remember different brands/manufacturers measure the burst C rating over different amounts of time!

I personally use the Turnigy 20-30C packs as ive yet to have any bad luck with them and for the price its a total no brainer for me. They may only be rated at 30C burst but that burst is over 10 seconds, that doesn't mean they can't handle say 50C bursts for 5 seconds for example! The ratings on the packs are also true cell manufacturer ratings.

Also Zippy's are not the same as Turnigy's:

TURNIGY® Batteries explained
Zippy: Great value for money. Average Cycle Life* (100+) and minimal voltage sag under load.
TURNIGY Standard: Excellent value, Longer Cycle life* (160+) and very low voltage sag under load.
TUNIGY nano-tech: Unbeatable performance, Longest Cycle Life* (250+) and almost 0 voltage sag under load.
*Cycle Life results from discharging at full C rate to 3v. End of life when battery has 80% capacity.

60% of the time, it works every time!

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09-23-2013 04:24 PM  5 years agoPost 28
McKrackin

rrProfessor

Lucasville,Ohio

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I may go with Zippys since I don't care if the first set lasts a month.

I just need some packs to get things going and a family crisis has left me broke for a few weeks.

I literally never use the word literally right.

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09-23-2013 06:24 PM  5 years agoPost 29
unclejane

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santa fe, NM, USA

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So are you getting back into E? Don't worry, so have I now that I've gone quad/hexacopter FPV recently....

As for batts, I'm now a strong believer in El Cheapo LiPos for E power systems. I'll never buy a good quality expensive LiPo for that ever again. If you over discharge em or crash em, they all make the same smoking hole in the ground anyway, so may as well get the cheap ones.

I've been using the super El Cheapo ones from Readymaderc on my quad/hexacopters. One of them puffed up on the first flight, but the other 3 are fine. I'd have been way more pissed if the puffed one had cost $100+ instead of, like, $35....

I store em in those big thick Pyrex lasagna cooking trays from the grocery store, just in case....

LS

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09-23-2013 10:02 PM  5 years agoPost 30
McKrackin

rrProfessor

Lucasville,Ohio

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Thanks...I'll check that site.

I literally never use the word literally right.

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09-23-2013 10:03 PM  5 years agoPost 31
McKrackin

rrProfessor

Lucasville,Ohio

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Hmmm...They don't have any 6S or even 5S

I literally never use the word literally right.

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09-23-2013 11:15 PM  5 years agoPost 32
Heli_Splatter

rrElite Veteran

USA

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Gravity Battery referenced 30c 6S @ $64.99 532g
NanoTech Battery referenced 65-130+C 6S @ $85.83 754g
Nanotech Battery 45-90c 6S @ $62.61 742g
Nanotech Battery 35-50c 6S @ $44.33 742g

I can tell you one thing, I have worked my nanotech batteries really hard lifting and have never puffed one of those packs. I strongly disagree with your assessment of NanoTech and I have a lot of them. I cannot explain your results, but I have not seen it here. Can you give me a reference of a 600 or 700 video picking 50lbs. I don't think that it can be done with either of those aircraft. I have a 550 and a 600.
I had the Nano-Tech 3300mAh 130C discharge and the Gravity 3300mAh 30C Discharge.Both sets were brand new for my 12S 600 EFL Pro and the Nono-Tech were garbage..Around 40 cycles they dropped a good amount of power and around 75 cycles they started puffing..On top of it,the Nonos were heavier..
The Gravity packs are 20000000X better and you'll get hundreds of cycles with the same power without puffing...I wouldn't waste money on Nanos..

BTW,
You can search youtube with 600E's and 700E's picking up 50LBS with Zippy lipos and just about everyone knows them are junk lipos..

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09-23-2013 11:17 PM  5 years agoPost 33
unclejane

rrElite Veteran

santa fe, NM, USA

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Oh sorry, yeah they're a quad shop so they don't seem to have anything bigger than 4s.... Yeah for 6S batts maybe try Readyheli, they have quite a few El Cheapo batts (Thor I think it is). Never tried those, tho.

LS

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09-23-2013 11:56 PM  5 years agoPost 34
3dgimble

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Rochester

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If we are talking about Nano Techs with actual helis and not a Quad, the I would agree with all the negatives about Nano techs.

They puff very easily in 3s 450 config., 6S 2500, 6S 3000, i believe i had a pair of 6s 3300 that puffed on break in flights, 6S 5000, 12S 3000, and 12S 5000. All were 45c plus.

I thought they were the new saviors from pricey TP, FP, and Outrage, so I stocked up, head first. Some were so puffed, I thought they were going to give birth to Nanos.

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09-24-2013 12:43 AM  5 years agoPost 35
McKrackin

rrProfessor

Lucasville,Ohio

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Ironically enough...I have also had Nanos that puffed.
The regular Turnigy 25C and better all seem to outlive the high C rated Nanos.

I was using them in a Trex 600ESP 6S and a Trex 500ESP 6S.

I also used Nanos in a 4S Trex 450 and never had any problems.

So my Nano experience is hit and miss.
My Turnigy experience is flawless.

The WORST lipos I ever had were Align and Lightning Power.

I literally never use the word literally right.

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09-24-2013 04:06 AM  5 years agoPost 36
BladeStrikes

rrElite Veteran

Shelby TWP,Mi

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Heli_Splatter
Gravity Battery referenced 30c 6S @ $64.99 532g
NanoTech Battery referenced 65-130+C 6S @ $85.83 754g
Nanotech Battery 45-90c 6S @ $62.61 742g
Nanotech Battery 35-50c 6S @ $44.33 742g
I can tell you one thing, I have worked my nanotech batteries really hard lifting and have never puffed one of those packs. I strongly disagree with your assessment of NanoTech and I have a lot of them. I cannot explain your results, but I have not seen it here. Can you give me a reference of a 600 or 700 video picking 50lbs. I don't think that it can be done with either of those aircraft. I have a 550 and a 600.
Anyone thats used Nano-Tech's knows its the top over rated garbage lipos ever made and their VERY,VERY well known for puffing...


^^Says 130C discharge but their more like 15C discharge^^ ..Also so you know,helis put more of a load on lipos than a light quad does,even lifting the same weight..
As for helis lifting weight,its nothing new..People have been doing that for years with electric and nitro helis..Videos have been posted on HF and RR along with youtube so do a search...

I would also be willing to bet that a 600 size electric can put more of a load weight on it being flown hard than a quad can with 50lbs,so a heli is alot harder on packs than a quad.

Also do a search on Nano-Tech lipos here or any other RC heli site.Them are the worse lipos and all the neg feedback shows,just look at the above post about them..The blue Turnigys are cheaper and MUCH better in every way.

Anyways,
He can get the Blue Turnigys which hold OK power for 150-200 flights or Gravitys which are alot more powerfull and hold the same power for 400-500 flights for a few bucks more..Haven't seen anyone complain about Gravity lipos..

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09-24-2013 04:20 AM  5 years agoPost 37
McKrackin

rrProfessor

Lucasville,Ohio

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Gravity Lipos would have to go better than double the cycles of the blue Turnigys because they cost more.

40C 5000mA Turnigy $70

40C 5000mA Gravity $110

So if the Turnigy survived 210 cycles the Gravity would have to go 330 cycles just to tie it in cost.

They may just do it to but it's such a long term consideration,it wouldn't cross my mind.

I don't usually get 100 flights out of a heli before I sell it and the lipos go with it.

I appreciate the input but I don't think I need to look that far ahead right now.

I may be shopping for 8000mA packs for the Mostro in a few weeks.lol...

I literally never use the word literally right.

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09-27-2013 06:41 AM  5 years agoPost 38
steph280

rrElite Veteran

Irvine, California

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I've been using nanotechs since they first appeared at hobby king. Yes they were the bomb, best bang for the bucks back then. But over the years I've notice their quality is hit and miss. I have many packs from 2200 to 5000 that started to puff within 10 cycles, while the older packs still going strong, both in the same helis. So I guess the biggest problem with them is consistency.

Gens ace has also gone down hill. I have several 4s 3300 and 3800 packs that would give me lvc 2 minutes into flight. They don't puff, just lose capacity dramatically within 20 cycles.

It's just so hard to find good cheap packs that are consistently good.

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09-27-2013 06:55 AM  5 years agoPost 39
shinysideUP

rrApprentice

USA NJ, NY

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Gens ace has also gone down hill.
Agree with you on that 1000%, I have been with them when they were just starting and the packs were really good. The ones now are like 20C packs disguised as 60C's.

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09-27-2013 09:15 AM  5 years agoPost 40
Shortman

rrKey Veteran

Portland, Oregon

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Battery C ratings mean nothing... the only true test is an actual discharge graph performed over hundreds of cycles showing decline (capacity loss) and performance at a particular amperage. Even then, with our helicopters we don't consistently pull a steady amperage but instead several spikes over a flights duration. So even those tests can't for certain tell, but they lend a lot more credibility than any manufacturer's stated C rating or "this feels stronger" statements.

IR readings (internal resistance) which can be checked like also stated offer a much better measurement of performance and degradation but again, if you actually check this, can find large swings depending on the temperature of the batteries (doing it at room temperature and at a consistent storage voltage are key to getting accurate IR readings and comparing).

Overall, there are quite a few lipo batteries I have found that offer great performance for 25 even 50 cycles, but I wouldn't even consider a battery until you look beyond that cycle range.

More importantly... is how we take care of these batteries. Charging only when they are going to be used and flown (the same day or at the field). Discharging if not flown to a storage voltage, and keeping the batteries in a stable temperature environment will give your lipo's a much better life and can be the difference between getting 50 flights out of a battery or 500...

Just some food for thought

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HomeAircraftHelicopterHelicopter Main Discussion › 12S C rating importance?
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