RC-Monster Forums - MaxAmps Race Edition Lipos

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Quote:

Originally Posted by JERRY2KONE (Post 389121)

I believe for the most part that has pretty much been done. 75C continuous(10 seconds) and 150C burst(1 second) at best. Which pretty much tells us that the TURE rating of these race ready LiPos is 75C. Not bad in comparison to some of the others out there, but that 150C rating is nothing more than a marketing stunt.

True C rating and actual listed C rating are two different things- they are actually listed as 75C continuous & 150C burst; the true continuous & burst rating is much likely down towards 30c/50c....

@ 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...

Quote:

Originally Posted by suicideneil (Post 389163)

a dogturd could start a dragster engine, and it wouldnt use over $1000 worth of batts to do so...

Word... I'm liking my Hyperion lipo more and more each day. :intello:

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:

Originally Posted by suicideneil (Post 389163)

@ 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...

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..

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:

Originally Posted by suicideneil (Post 389194)

Might want to take a look at the BigSquidRC 4S Shootout for a graph of the Turnigy's...

Quote:

Originally Posted by MindThoughts (Post 389207)

Thank you,
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.

Costs. No one will believe them. An independent body would be the best way to do it. But again it goes back to cost.

Quote:

Originally Posted by MindThoughts (Post 389207)

Thank you,
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:

Originally Posted by JERRY2KONE (Post 389079)

I think its becoming painfully obvious that Maxampa has no intentions of showing anyone that these cells can actually handle anything other than that which is already being done by their competitors, nor do they care which we can tell by the responses on this thread. As expected advertising TRUE 150C race ready batteries is an aborition or myth if you will. I think we have already established that these NEW miracle breakthrough cells are nothing more than 75C LiPo cells that some of the other LiPo suppliers have already been selling on their sites for nearly a year now. Using that specail wrapping with pretty flames, and slapping that 150C on the case was nothing more than a advertising stunt trying to get everyone over to their side, and I am sure that it will work for the average R/C hobbiest who do not know any better or care for that matter.

Think about it. Most of the people in this hobby are just happy go lucky people who are thrilled that someone loves then enough to have bought them an R/C in the first place, and all they want is a good battery pack that can make their new toy rip around the yard/garage, or parking lot well enough to draw the interest of the neighbors. A few of the sponsored R/C racers will use them because they will get them for free, and when everyone else sees them being used. Well we all know that most will jump right onto the band wagon and sales will sore through the roof. We are a very small % of R/C people who actually would like to see some level of specs to show exactly what these cells are capable of. DO you really believe that they care one way or another what we think? So lets stop waiting expecting that something will redeem their tactics and come to realize that Maxamps is still the same company it has always been. Money talks and BS walks. Life goes on. So until Maxamps has LiPos that are directly in line with all of the other battery suppliers (price wise) or we start to hear about good customer service where warranties are concerned I will go with whats cheap and easy to get. I cannot in good faith spend my hard earned $$$$ on products where the company uses unfair, shady, or deceiving advertising practices to lure in unwarry consumers. Thats just my two cents. You do what feels right to you.

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!

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?

Quote:

Originally Posted by E-Revonut (Post 389227)

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:

Originally Posted by thzero (Post 389212)

Might want to take a look at the BigSquidRC 4S Shootout for a graph of the Turnigy's...

Costs. No one will believe them. An independent body would be the best way to do it. But again it goes back to cost.

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

Quote:

Originally Posted by fastbaja5b (Post 389217)

I carry a 3s 5k mah 25c lipo around on my bike just incase I have to jump start it... The car starting thing is a bit lame... But there is no such thing as bad publicity.

Quote:

Originally Posted by E-Revonut (Post 389238)

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

I've got the 100 Amp version but it's handled spikes up to 130 amps fine.

Quote:

Originally Posted by josh9mille (Post 389106)

Actually since neither of those engines are boosted in any way, I would bet good money they are both 14:1 compression or more

Nitrous in large quantities = low RC ..

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:

Originally Posted by E-Revonut (Post 389238)

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

I'm considering buying the 100amp version. My concern was that if I spiked anything over 100amps for any length of time such as a few seconds while wide open- acceleration- my concern was that the Telemetry System would not read that data. But if your system is the 100amp and it's reading spikes up to 130amps- sounds like this could very well be the ideal system for me to use with my system. Thank you :)

Quote:

Originally Posted by fastbaja5b (Post 389241)

I've got the 100 Amp version but it's handled spikes up to 130 amps fine.