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@ Mindthoughts- you might wanna change your youtube message you left on that maxamps video- you were clearly far too impressed by that massive pack starting an engine, when we've already been over the issue; a dogturd could start a dragster engine, and it wouldnt use over $1000 worth of batts to do so... |
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5 Pounds Of MaxAmps LiPo vs Lead Acid(Cost Less- Weighs Much More).
I see your point. Even if the Drag Racers in the you tube video are using three- 4cell LiPo's run in parallel(14.8volts total voltage- combined)- at 676grams each- times three = just under five pounds. It may not be worth the 220.oo dollars times three = 660.oo dollars to have a five pound battery- rather than a battery that weighs much more than that- in the Lead Acid Chemistries. But then again- some racers are willing to pay allot of money to save a few pounds. And a 12 or 16volt Lead Acid Battery Can Sure Get Quite Heavy. What would a lead acid Drag Race Battery Weigh? 30+ Pounds? I didn't see any specifications of battery weights for 12v or 16v Drag Race Batteries.
PS. I sure like the sound of those Dragsters :) Note: It seems the single Turnigy LiPo Starting the automobile engine- was certainly quite impressive- to say the least :) Quote:
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Im glad you didnt take that personally, but you have to keep your objective cap on your head when viewing seemingly impressive vids like that- little bit of research shows/showed it to be far from impressive..
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An Objective Viewpoint vs A Subjective Experience.
Thank you,
I certainly appreciate you looking out for me :) PS. The amount of knowledge and technical ability of many of the RCMonster forum members is absolutely awesome- and it's always great to see the technical formulas- and mathematical brilliance that so often sheds light onto any given subject. It's great to express opinions with passionate emotion- but to me- nothing is more powerful than raw data and like many brilliant minds here on this thread have said- the numbers are hard to argue with. That said- it would also be great if someone was able to compare these MaxAmps LiPo's to any other- or many other model LiPo's from different companies. Note: I realize it upsets people to see "True 150amp"(which represents a 1 second burst- ability) on the front of this model LiPo but the main thing that I would like to see is- How do these LiPo's compare to the other high end batteries in the RC Industry- ie Hyperion- Thunder Power- Turnigy(I'm beginning to consider Turnigy a high end- low cost battery)- and any other LiPo anyone would like to throw in the mix. It's the comparative data that really is the valuable information(I see no reason MaxAmps cannot perform these comparative test). Until the RC Industry has a standard by which all LiPo's must be measured- there's no basis for rules to play by- or at least seeming so. Quote:
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Might want to take a look at the BigSquidRC 4S Shootout for a graph of the Turnigy's...
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I agree with this comment, people make the assumption that cheap = poor quality and expensive means it must be good. What percentage of the population that uses RC is actually well versed in the industry, and has done their research etc? 5%?, 10%? I can tell you right now, Maxamps target market isn't us, it's the other 90-95% who think that fancy packaging, high prices and way out claims are the way to make sales, they're still in business so it must be working. Starting a car with a Lipo? I've started a 4cyl Focus with a 4s2p A123 pack with little dramas (makes a good "jump starter") once again, a youtube video feeding off assumptions. |
Well guys I just got a netbook tonight. As soon as I can get the software for my EagleTree on here I will do a run with my NeuEnergy 4s Lipo and we can compare them. The 4s 5500mah Neu was about $120, and claims 25/50C. If someone wants to send me a MA lipo I will run the same test!
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Eagle Tree Telemetry System.
Which model Eagle Tree Telemetry System Are You Using? I'm also interested in buying one of these to help with setup and testing- but was not sure which AMP rating(Model) to purchase for use with 1/8th scale systems. Which model do you recommend?
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BigSquidRC LiPo Shootout.
This was an excellent review to read- Thank you for metioning it :)
I primarily run one- 3cell LiPo in my 1/8th scale buggy- Can you recommend a review of different 3cell LiPo's? I'll Look into the same site to see if I find anything BigSquidRC may have done- insofar as testing different 3cell LiPo Batteries and comparing the different related data. PS. I wonder why MaxAmps didn't participate in this shootout? After all, MaxAmps makes a LiPo which is a hard case 4cell- which qualifies the MaxAmps batteries for this shootout. I'll write BigSquid and ask them why they didn't include MaxAmps in the shootout. If anyone already knows- please feel free to mention your insight into this matter. Quote:
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I don't know what they have to offer now but when I bought mine I got the 150Amp version as it was the highest they had
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Only NA engines need high RC... |
Eagle Tree Telemetry Systems.
Awesome- Thank you.
Note: Someone had mention to me- that own and uses the 150amp veriety of Eagle Tree Telemetry System- that he wish he had bought the 100amp version because the 150amp does not have the same resolution for the area of amps that he's actually using. I didn't really understand what he meant by that. I thought it seem quite a good idea to buy the 150amp version because this way I would record any amp draw- acceration spikes up to 150amps- which I do not imagine I would exceed. Especially being that I run a 1/10th scale motor (1409 1Y 3600kv Neu on one three cell TP 40c LiPo) in my 1/8th scale Hyper 9E buggy. And it's absolutely crazy fast. Quote:
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EDIT: found it |
So i just scanned over the 4s shootout, and i have to say it was kind of lame. First off i will say i am a big fan of cheap, so to say i am a Turnigy fanboy is pretty accurate. Why did they choose the 4500 turnigy as opposed to one more comparable to the size of the others? Also the turnigy had the second to lowest C rating and that coupled with the least amount of capacity will give it less voltage under load than the others.....DUH. BUT....the voltage was only like, what, a fifth of a volt less than the highest rated pack? And it was probably due to the fact of the capacity and C rating.
Regardless I will still buy cheap, the price difference between the turnigy and the others was HUGE! Now we just need to see a test of the Nano-Tech's |
Is The Turnigy LiPo The Actual BigSquidRC Shootout Winner!
My thoughts exactly. And the fact that they say- just look at the charts- The charts show everything- was kinda funny because upon looking back at the charts I saw the same thing I saw the first time I read the entire review- That the Turnigy- taking into consideration the details you took into account- are actually totally awesome and right up there with the best of the best- Yet at a very small fraction of the cost. I will say this- for the past year- Hobby King batteries- and Specifically the Turnigy Line of LiPo cells- has become extreemly popular at the tracks. People want what the Pros have, but most will buy what they can afford. And many racers are buying the Turnigy cells to practice with and club race with as well- and often will race the big series races with the more expensive batteries- but one might begin to ask themselves- Why not always run the $40.oo dollar LiPo rather than the 200.oo dollar LiPo. I'm at the point in time where I'm ready to buy my first Turnigy cells- just out of curiosity.
Here is the link to the BigSquidRC LiPo Shootout: http://www.bigsquidrc.com/lipo-batte...-3-4s-edition/ Quote:
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You'd be surprised how much current you can pull! In my truggy on 5s geared for about 38MPH I had peaks over 160Amps. These MA packs should do great at those current levels, according to the label!!! However I don't beleive their labels as I severely puffed a 5s 5000mah pack in that truck after I lowered the gearing
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Don't buy the info about racing engines that you find laying around. I bet my head than several of those engines are close to 10:1... You make more power with lower Rc, since you can spray a lot more and use generous timing ... |
The part of the test i found the most rediculous was the fact that they gave the turnigy pack a 5th place rating in the capacity test, when in fact it held 80mah more than it is rated for. The winner of the capacity test actually held 60mah LESS than it was rated for. Does that make ANY sense at all? In my eyes the Turnigy pack won that section of the shootout hands down! However the seat of the pants test the Turnigy came in dead last, but i would still attribute part of that to the low C rating and capacity size.
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More than likely. However, they can only test what they are sent. Personally I think they need to in future shootouts set a specific # of cells, MaH, and C (even though this is subjective as we all know) rating so that its a more even playing field. Nonetheless, seat of the pants testing will always be subjective.
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Something just occured to me, maybe since all the packs they tested were hardcase, that that is the biggest hardcase pack turnigy makes? That would make sense. Now im going to have to go look and see...... EDIT: ok so yes that must be the biggest hardcase turnigy makes. |
Actually I don't know. In at least the first two tests I do believe they were supplied by the manf. with the batteries based on their test vehicle. I'm not sure if they purchased this round or not.
Ah, yes, that would be the reason. I think I was more interested to see the graphs than anything. I would have preferred them do at least 3 runs per battery for the graphs. Quote:
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Couple of you guys said that you would be more impressed if s standard LiPo for an RC car was used and not a larger brick pack. Well Big Squid RC actually did this back in June with one of our packs and it cranked over the car right away with ease:
http://www.youtube.com/watch?v=KfaryxeCNsI Brandon |
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I have a bunch of 2S lipos that are hardcase... they are ok.
The "Deal" with hardcase is that all 2S and 4S lipo packs (only type used) have to be "hardcase" by ROAR specs for ROAR racing. SO might mean something to "racer" crowd (i'd be one but I can't make 5pm start times with being over hour away) but not for the more basher oriented crowd. Quote:
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Hey he's back...... With more coments and nothing that was promised, like proof of the ratings on the packs in question. Whatever let them dupe the uneducated that buy their products. Sooner or later it will bite them in the a$$ and come full circle. Lying to your customers is a ticking time bomb. I know none of the other manufactures prove their ratings either but then again they aren't claiming 150c ratings either. I say go old school and hook a cell to a bulb discharger that draws said 150c or close to it and watch what happens. Bet they won't warranty it. Any company who offers a warranty but also has a disclaimer nullifying it is a straight up joke. Had a cell drop in my pack in the first month and was told (without any questions about my setup) that the warranty did not apply and I had to pay for the cell. No offense Brando but if the graphs and proof aren't going to be fabricated/presented as promised save some face and just stop posting. People here aren't going to buy your stuff.
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Bit off too much
I think he bit off more than he could chew with this one. We all know you just came onboard with MaxAmps so you are learning as you go, but this whole "true 150C" crap really stumpt you didn't it? How can I back them up wihtout looking like a tool? What that wrapping sholuld have said is (75C continuous/150C burst) plain and simple and that would have been great advertizing, but now you have to back peddle like crazy just to keep your head above water. anything else is just a lie. The most obvious test here is when anyone makes a mistake or mispeaks to step up and say hey we slipped up "disclaimer". This is what the truth is. Bamm done. But nooooo lets keep this lie going, and going, and going. This just drove your character and credibility right into the toilet. So I cannot wait to see the next addition of the R/C action magazine with puffed up hype about these cells. If this advertising continues with the "TRUE 150C" race ready LiPos I am done reading your magazines as well. Honestly it is so filled up with advertising crap that it is getting pretty boring anyway. But to post up an ad knowing that it is complete rubish is the straw that breaks the camels back for me. Sorry Brandon I have to give you cudos for stepping in here and taking on the challenge, but this is just plain sad. Pure Hype and nothing to back it up.
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Ever heard the saying, "Birds of a feather flock together"? There is a reason why the Maxamps section on this forum didn't last very long. Why are they not here anymore? Brandon doesn't answer most questions directly, probably because he has to run back and forth, between Jason and Austin, asking what to say and such. 3 peas in a pod if you ask me. The marketing hype is BS and they are all full of it. It appears to me they took a solid 30C cell and are trying to pawn it off as "True 150C". But since the "True" C rating works with capacity, let's go with a 6500mah cell, then demand they set the LVC at 3.4 volts per cell. <------another ploy to dodge warranty claims. |
75amp Discharge For The Full Duratoin Of The Charge.
Brandon-
How long do you think it will be until you can get the 75c Continuous Discharge Test up for us to see? PS. Is there any posibility to have the Battery State 75c Continuous(Full Duration) and 150c 1second Burst. And to specifify that Continuous is for the full duration of the charge of the battery- and 150c is for 1second burst- Onto the wrapping of each lipo? PS. Brandon has already stated that these 6500mah LiPo's can handle and are rated at exactly: 150c Burst for one second. 100c for ten seconds. 75c for the full charge of the LiPo. Brandon- you must have done some testing to arrive at these numbers you gave us earlier in this thread. Is there any way you can post up the test that were already done which gave you these figures? By the way- you mention to me in a PM that you were having technical problems transfering your test over to a Digital Format(if I understood you correctly), But if you could even take pictures of different time frames of these test you performed already, and just post the pictures up- that would at least be something for us to look at. I think most of us would like to see your 75c Discharge for the full duration of the charge- Test. The 100c for ten seconds is awesome as well- The 150c 1 second burst would even be interesting to see. What are your thoughts on this? By the way- what are you using to do the 75c continuous discharge for the full duration of the charge? Quote:
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Some Constructive Info
I'm thinking to myself, and I realize this info is already on the forum in several places, but why not turn this thread in to a more constructive discussion. Since there are alot of us still reading up on the tread, what lipos have you had good results with? Let's start a poll and get some real information out to the guys following this tread that are on the fence about their future lipo purchases. The hell with MA, let them fall where they may in the results standings as we are obviously not going to get those promised results. Lets spend more time promoting the good guys !!
My experience with lipos is as follows: Great results with Turnigy for the money, can't beat them in my opinion and to all who might be looking for them, check out Hobby King, they now have a USA warehouse but there stock has been low for a long time. Even if you purchase them from another one of their warehouses, their still an excellent deal when you add shipping charges. I use these about 70% of the time. Have never received bad cells with purchase. Zippy's are a decent value, I run these alot also except the cells don't seem to balance near as nice as the Turnigy lipos. Still a good value for the money. I have had 2 lipos show up with bad cells but they stand behind there product. These were both from the same order so probably a bad batch? Thunder Power I use in my smaller vehicles with great success. I little more expensive but I get tons of cycles with these and they seem to have a high quality control as I have never had bad cells. I won't comment on the flaming bricks as I have nothing constructive to say except I don't waste my money on them anymore after having bad cells several times, and they seem to puff alot more than any other lipos I have used. I'm sure there are alot of people on here that use higher quality lipo than I do, so maybe you guys can add your opinions about the higher dollar lipos if someone is looking for a better lipo out there. |
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WE WANT GRAPHS!!! nothing else... |
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My experience with Maxamps wasn't very great. I bought over $1000 worth of Lipos and chargers (5000mah 10s), it was when Lipos were just starting out, in the world of BK Warrior controllers and Hacker/Lehner. I got half a run out of those packs. Then they puffed and Maxamps wouldn't take them back. I ended up disposing of them. My experience with Thunder Power was pretty good, never had a problem with those packs, the price was about the same as other lipos at the time, They were a little larger than the other but gave good performance. My Dad now has those packs, probably 40-50 cycles on em with no problems so far. Now I'm using Hyperions and I'd have to say they are the best on the market in my opinion. I'm using two 3s packs in series on my Savage Flux and wow do they have a lot of power! They are also significantly smaller than my old Thunder Power packs for the same performance. Not too many cycles on them right now but 0 problems with them so far. My next purchase will likely be Hyperions, but I might try out NeuEnergy, it depends on what the space constraints and such are. I've never tried the Chinese packs such as Turnigy, but I have been tempted to get a few, and probably will for my cheaper stuff. Heard almost only good things from them. |
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Any pack at 100c can only last 10 seconds. So shouldn't these packs be rated at 100c continuous? You think Maxamps would have figured out and advertise it as a continuous 100c pack.. :lol: |
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Thank You.
You are right, thank you. I will edit/update the post with c rather than amps. I appreciate your saying something:)
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