RC-Monster Forums

RC-Monster Forums (https://www.rc-monster.com/forum/index.php)
-   General Questions (https://www.rc-monster.com/forum/forumdisplay.php?f=7)
-   -   does anyone use really big batteries? (https://www.rc-monster.com/forum/showthread.php?t=14114)

bl-is-future 08.09.2008 10:04 AM

Quote:

Originally Posted by jayjay283 (Post 199695)
Ive heard that also, I meant that Flightpower was absent from the list on that website for purchse of enerland options.

ic what you are saying now, yeah makes sense

glassdoctor 08.09.2008 12:29 PM

I love my 12000mah pack LOL!!!!

You gotta see the face of the nitro guys when they hear how long my CRT can run on a charge... good stuff.

But I don't recommend a pack this big. I did it only for runtime.

ReV:-O 08.09.2008 07:22 PM

Quote:

Originally Posted by Finnster (Post 199694)
out of curiosity, how much were you quoted for the big MA pack?
As already said, the "C" rating can be real BS at times depending on the company as there are no real stds. They are not necc lying, but they may be "optimistic."
The only way to really tell is to see discharge graphs and compare performance, as well as anecdotal reports. If a battery is getting hot during use, its pushed too hard.

If you want 60 mph out of a Muggy, then you are going to need a lot of power. I would plan on 2500-3000W peak or so. For 6S, this means about 120-150A peak. If a batt truely does 125A continous you will be fine. However, 3000W out a 1515 is going to start pushing the motor perhaps, esp on a hot wind like a 1Y. If you don't already have the motor, I may think about a 1521 even so you don't possibly overheat and/or use thegreater TQ to gear up and hit your spd goal. 60mph in a big MT is really really fast.

if i should get a 1521, which one should i get?

1521/1D 2900kv
1521/1.5D 1900kv
1521/1Y 1577kv
1521/2D 1425kv
1521/2.5D 1200kv
1521/1.5Y 1050kv
1521/2.5Y 630kv
1521/3Y 525kv

as you can see, all except the 1D have lower kv ratings, so they will be slower than the 1515/1y. i dont think it will be possible to achieve 60mph with a 1521

bdebde 08.09.2008 07:49 PM

Quote:

Originally Posted by ReV:-O (Post 199993)
if i should get a 1521, which one should i get?

1521/1D 2900kv
1521/1.5D 1900kv
1521/1Y 1577kv
1521/2D 1425kv
1521/2.5D 1200kv
1521/1.5Y 1050kv
1521/2.5Y 630kv
1521/3Y 525kv

as you can see, all except the 1D have lower kv ratings, so they will be slower than the 1515/1y. i dont think it will be possible to achieve 60mph with a 1521

The 1521 1Y is popular for 6s, and I don't see why you think you won't achieve 60 mph on a 1521...

Differential Ratio: 4.09
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 46
Pinion Tooth Count: 20
Total Voltage: 22.2
Motor KV: 1577
Tire Diameter (inches): 5.8
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0.008
Spur/Pinion Ratio: 2.3 : 1
Total Ratio: 9.407 : 1
Tire Circumference (inches): 18.22 inches (462.82 mm)
Total Motor Speed: 35009.4 RPM
Vehicle Speed: 64.22 mph (103.15 km/h)
Estimated Adjusted Speed: 59 mph (94 km/h) - 9% loss
Effective KV Value: 1577
KT constant: 0.86 oz-in/A
Motor Torque: Amperage not specified...
Final Torque: Amperage not specified...
Final Power: Amperage not specified...

ReV:-O 08.09.2008 08:14 PM

woah if i can get 59mph and the motor is only spinning at 35000RPM, imagine how fast it could go with the 1515/1y spinning at 50000RPM!

lutach 08.09.2008 10:35 PM

I have the 1521/1Y in my BPP truggy and it's insane with 6S and even 5S. Arct1k saw a little run with 10S lipos. If my truck was geared right, it would've been awesome.

lincpimp 08.09.2008 10:54 PM

Quote:

Originally Posted by 1maxdude (Post 199858)
Sounds like Maxamps is the new Venom of lipos. Higher priced, lower quality, popular with the uninformed. Yeah, I was the one questioning the "hate" of maxamps. Your guys' applications are totally different and uncomparable to mine. Personally, my pack suits my needs so I'm not going to come in here and try to defend them and have this guy spend 550!!!???!! on their battery. Obviously, if you guys can get away with running 1p, then them trying to sell a 2p battery says something about them. Especially when its such a high capacity and they still want to go 2p.

Maxamps lipos have their place, mainly 10th scale 2wd. About the only thing they sell that will work in a MT is the 8000 packs. They get rather heavy, and large, especially over 4s. I had alot of issues with defective cells, 10-12 packs... That alone would steer me away from MA, not to mention the outrageous prices, and"questionable" specs.

A 6s lipo may be too much for the 1515 1y, go with a 1521 motor, 1800-2000kv for 6s...

1maxdude 08.10.2008 01:00 AM

Yeah, I have one that works great. But like I said, I'm 10th scale 5lbs, not a big ass 8th conversion.

Just go Play 08.10.2008 02:42 AM

Quote:

Originally Posted by ReV:-O (Post 200009)
woah if i can get 59mph and the motor is only spinning at 35000RPM, imagine how fast it could go with the 1515/1y spinning at 50000RPM!

Not sure if your serious or not but if so there is more to speed then high motor RPMs's. If that was all that mattered then you could just throw in a mamba 7700 and go even faster right?

1521's create more power and can be geared higher then is possible with the 1515 series motors. But if you really want the high rpms you could get the 1521 1D. More power then you'll be able to use, high rpm's, and certain to pull a ton of current in the process.

ReV:-O 08.10.2008 06:13 AM

but i figured the 1515/1y was a pretty strong motor regardless and could handle the muggy? i dont want to buy a really powerful motor and then just continually strip gears n stuff

mxracer 08.10.2008 07:43 AM

1y is nice on 5s !

flight power packs have been flawless too

flightpower all the way !

ReV:-O 08.10.2008 08:33 AM

oh oh i think i found the solution:
EITHER:
a Neu 1521/1D 2900kv on 5s running at 53650RPM,
or
a Neu 1521/1.5D 1900kv on 6s running at 42180RPM.

Both of these are the 1521 motor, and so are stronger than the 1515. with the first option, i'll be getting insane RPM and a powerful motor, so this sounds like the best bet to me!

suicideneil 08.10.2008 11:46 AM

I would favour the 1900kv option as it will draw less current, and allow for more sensible gearing. Jzemaxx I believe tried the 1521 or 1527 and it ran the MMM very hot- pulls an aweful lot of amps.

ReV:-O 08.10.2008 11:48 AM

Quote:

Originally Posted by suicideneil (Post 200122)
I would favour the 1900kv option as it will draw less current, and allow for more sensible gearing. Jzemaxx I believe tried the 1521 or 1527 and it ran the MMM very hot- pulls an aweful lot of amps.

oh right so do you think i should go for a 1515 then? would a 1515/1y be able to wheelie it? it seems extremely powerful in a revo and surely the muggy cant be that much more heavy

suicideneil 08.10.2008 12:17 PM

I dont think the Muggy is that much heavier either, but I think its worth having a bit of a dig to find the other conversion threads. I would either say the 1515 in 1700kv flavour to run on 5 or 6s lipo, or the same with the 1521. If there isnt that much difference in price between the two motors, then the choice is simple enough provided the batts are capable also. Mind you, the medusa 70 and 80mm motors are coming soon, worth thinking about as it will take you time to get the muggy and strip it/ convert it, ready for the motor and electronics...

azjc 08.10.2008 02:07 PM

if you insist on a 1521 go with the 1.5d on 5s and a 1y on 6s...remember with the extra torque that the 1521 produces you can gear up to get the extra speed you want, IMO stay away from the 1d it will pull too many amps

bdebde 08.10.2008 02:51 PM

I run a 1515 2.5D on 6s in my Muggy (check my sig for build thread). I would have got the 1521 1Y had it been in stock, but I am very happy with the motor I have (plenty of power). I think Satttheman has a 1521 1Y in his Muggy. I have a couple vids in my build thread and so does he (search "Muggy" or by username).

Pick the 1521 1Y, you can gear up for plenty of speed. The 1521 1D and 1.5D would just be some serious amp hogs IMO.

You won't need serious rpm unless you only do speed runs and only for short periods. I have a Plett Big Maxx that I have run in the Muggy a few times, it is 2300kv and rated 1800 watts (same as the 1521). It will really heat up my MGM 16024 esc and battery if I run for too long, and the power just flips the truck over with ease (not my favorite way to drive). With my 1515 2.5D, I can run pack after pack all day without overheating things.

ReV:-O 08.11.2008 09:03 AM

Quote:

Originally Posted by bdebde (Post 200159)
I run a 1515 2.5D on 6s in my Muggy (check my sig for build thread). I would have got the 1521 1Y had it been in stock, but I am very happy with the motor I have (plenty of power). I think Satttheman has a 1521 1Y in his Muggy. I have a couple vids in my build thread and so does he (search "Muggy" or by username).

Pick the 1521 1Y, you can gear up for plenty of speed. The 1521 1D and 1.5D would just be some serious amp hogs IMO.

You won't need serious rpm unless you only do speed runs and only for short periods. I have a Plett Big Maxx that I have run in the Muggy a few times, it is 2300kv and rated 1800 watts (same as the 1521). It will really heat up my MGM 16024 esc and battery if I run for too long, and the power just flips the truck over with ease (not my favorite way to drive). With my 1515 2.5D, I can run pack after pack all day without overheating things.

the 1521/1.5D is only about 350kv more than the 1521/1y. everyone i've spoken to says you should aim to get the RPM around 40,000 on the Neu motors. if i get the 1y it will only be around 35,000. but with the 1.5D it will be about 40,000. will it really draw that much more amps? its not that much different. i mainly do speed runs because i am limited as to where i can drive and i have a very long street. I used to use a brushelss HPI Pro 4 for this but it was too sensitive and kept breaking parts so i want something that can be equally as fast but a lot more durable

bdebde 08.11.2008 10:58 AM

The 1.5D may not be too bad, just be sure to get good batts.

ReV:-O 08.11.2008 11:58 AM

argh this is so confusing. i wanted to get a thunder power lipo but then i would have to buy their charger and balancer and it would all work out too expensive. i just want to buy the hypereion Net charger cos it seems like the best one.
Ive got a final list of batteries and they are all pretty much the same - just different makes and i have no ideas which ones are better:

1:
Elite EL6S-5300 Li-Poly Battery
22.2V 5300mAh (6 cells) 30C/50C
Rating: 30C (159.0A) continuous, 50C (265.0A) burst
Dimension: 188mm x 46mm x 42mm
Weight: 800 grams
Termination: 10AWG wire leads
Request PQ / HP, AL or TP taps during checkout

2:
Poly RC PQ-6000XP-6S Li-Poly Battery
22.2V 6000mAh (6 cells) 25C/50C
Rating: 25C (150.0A) continuous, 50C (300.0A) burst Dimension: 165mm x 46mm x 64mm
Weight: 886 grams
Termination: Wire & PolyQuest/Hyperion tap

3:
PolyQuest XQ LiPo Battery (6s1p, 22.2v, 4500mah, 30C, no cnctr)
Weight: 722 g / 25.47 oz
Capacity: 4500 mAh
Voltage: 22.2V
Dimensions: 168.5 x 51.5 x 50.5 mm / 6.63 x 2.03 x 1.99 in
Connector Type: Bare Wire Leads
with Multi-Tap Connector

4:
PolyRC 6000 MAh 6S 22.2volt 25C pack
Dimensions 168 x 48 x 67mm
Weight 926 gms
Factory C Rate 25C - (150 amps) continuous
Burst C Rate 40C - (240 amps) under 10 seconds
Ideal C Rate 21C - (127 amps)

5:
PQ-5000XP 6S1P
Capacity : 5000mAh
Cell Model: PF 8643150XP
Voltage : 22.2V
Charge Current(2C) : 10.0A
Continous Dis.(25C) : 125.0A
Dimension(mm) : 54.0 * 46.5 * 166.5
Weight : 750g

6:
FLIGHTPOWER EVO25-4900 6S BRICK
25C 122.5A CONTINUOUS, 50C 245 AMP BURSTS
DIMMENSIONS: 140MM/44MM/63MM

7:
FLIGHTPOWER EVO25-5000 6S BRICK
FLIGHTPOWER EVO25-5000 6S 21.1V 25C 125A CONTINUOUS, 50C 250 AMP BURSTS DIMMENSIONS: 54MM/44MM/166MM

8:
FLIGHTPOWER EVO30-4500 6S
30C 135A CONTINUOUS, 60C 270AMP BURSTS:
DIMMENSIONS: 165.0MM/44.1MM/49.1MM

im so confuzzled!

bl-is-future 08.11.2008 11:59 AM

you dont have to buy there charger and balancer

ReV:-O 08.11.2008 12:02 PM

yeah apparently thunder power lipos are only compatable with thunder power chargers and balancers (they dont have a charger/balancer)

bl-is-future 08.11.2008 12:07 PM

lol no it is only because of the tap they use. you can get an adapter to use the Hyperion chargers.

ReV:-O 08.11.2008 12:11 PM

ah i dont wanna start mucking around with connectors and stuff. i dont even want to put the connector on myself, hopefully the store can do it for me

bl-is-future 08.11.2008 12:14 PM

that is what i just said there is a pre made board specifically for thunder power and flight power lipos to be balanced on the 610NET, You dont do anything but plug it in, no need to make anything. here is a link - http://www.allerc.com/product_info.p...oducts_id=3162

ReV:-O 08.11.2008 12:39 PM

would this be a good battery? im thinking its too heavy

Thunder Power TP6600-6S2P Li-Poly Battery In Stock $439.99
22.2V 6600mAh (charge as 6 cells) eXtreme Series
Rating: 20C (132A) continuous, 50C (330A) burst
Dimension: 148mm x 44mm x 75mm
Weight: 984 grams
Termination: Wire & Thunder Power taps

bl-is-future 08.11.2008 12:41 PM

why do you insist on such a large battery?

ReV:-O 08.11.2008 06:53 PM

is that really a large battery? i figured it was kinda normal size just a bit heavy.
basically i just want the "best" battery. i want loads of runtime - like 45 minutes, and i want 6s, and it also needs to provide the Neu with the required amps

azjc 08.11.2008 07:17 PM

Quote:

Originally Posted by ReV:-O (Post 200666)
is that really a large battery? i figured it was kinda normal size just a bit heavy.
basically i just want the "best" battery. i want loads of runtime - like 45 minutes, and i want 6s, and it also needs to provide the Neu with the required amps

IMO any pack more than 5000mah is big, that will give you 30 mins of WOT runtime with a Neu 1515/2.5d..if you want more time buy a second pack, and when the first one dies, replace and run the second

ReV:-O 08.11.2008 07:22 PM

im either gonna buy the Neu 1515/1y, or the Neu 1521/1.5D for it.. i just cant decide. i think the 1515 might struggle a bit and heat up and i hate things heating up lol

azjc 08.12.2008 03:10 AM

Quote:

Originally Posted by ReV:-O (Post 200672)
im either gonna buy the Neu 1515/1y, or the Neu 1521/1.5D for it.. i just cant decide. i think the 1515 might struggle a bit and heat up and i hate things heating up lol

a 1515 is fine on a Revo, the Neu will heat up if youy buy one with too low of a wind, I used to run a 6s and 1515/2.5d and it run well even in the 110 deg heat here in Phoenix...I would quit running the Revo before it gave out...I would get tired of sweat running down my face while bashing,,,:lol:

ReV:-O 08.12.2008 12:56 PM

buy one with too low of a wind? what does that mean? and can you choose how many winds you want?

azjc 08.12.2008 01:03 PM

Quote:

Originally Posted by ReV:-O (Post 200905)
buy one with too low of a wind? what does that mean? and can you choose how many winds you want?

yes...the lower the wind the higher your KV...just remember...high Kv = high heat

ReV:-O 08.12.2008 02:43 PM

o rite, how comes someone told me the 1515/1y might overheat in the muggy because they said it was a hot wind? me confused

bl-is-future 08.12.2008 02:49 PM

the 1y is 2200kv which is high but it is not so high that it will overheat with normal gearing. Gearing plays a huge role in heat as well. you can have the lowest wind there is and gear it up to high and it will still ever heat. You have many people that are very very knowledgeable telling what motors will work. You also want to choose your voltage according to the wind of the motor. In a muggy a 1515 will be plenty powerful and will run cool. Just choose a kv for your battery setup. the max is 60000rpm on the neu motors. kv * battery voltage = max rpm motor will produce. Get that around 50000rp and you are good. 60000rpm is max but you dont want to constantly run it there. 50000rpm is a good medium. ex the 1515 1y is great on 5s. the 1515 2.5d is great on 6s.

VintageMA 08.12.2008 02:51 PM

Take a look at the Neu 15xx series page here:

http://www.neumotors.com/20061222/1500_series_.html

Lower winds = higher kv.

On 6S you are probably best with a 1515 2.5D (what I run in e-Revo on 6S - just over 35mph with very moderate gearing and no heat issues - I could gear a bit lower and have it going 40-45 easily) or a 2D. 1Y may work but you have to gear pretty high and the first few minutes of a fresh pack are going to push that motor up to about ~55K rpm - I think you'll have heat issues.

ReV:-O 08.12.2008 03:11 PM

ah im trying to aim for 60mph. i've been goin 50-55mph with my picco .28 revo so i'm looking for somthing a bit more

azjc 08.12.2008 04:12 PM

Quote:

Originally Posted by ReV:-O (Post 200977)
ah im trying to aim for 60mph. i've been goin 50-55mph with my picco .28 revo so i'm looking for somthing a bit more

if you want that kind of speed your electronics will run on the hot side no matter what brands you use unless you are only doing a few speed runs at a time

ReV:-O 08.12.2008 05:31 PM

if i get the 1515/1y on 6s, that will be about 50,000RPM which will be pretty quick. but if i get the 1521/1.5D on 6s it will be around 40,000RPM but it will be more powerful so i could gear it higher

ReV:-O 08.12.2008 08:35 PM

ok guys thanks for all of your great help. I've finally made a FINAL list of all my stuff that i will get:

Neu 1521/1.5D motor
Poly RC PQ-6000XP-6S Li-Poly Battery
I was going to get the MMM esc, but after reading that the v2 MMM were still having problems i am now looking for an alternative. does anyone know any good esc's that will work well with my setup? price is not a constraint


All times are GMT -4. The time now is 05:37 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.