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Thread: lipos 2S or 3S?

  1. #1
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    lipos 2S or 3S?

    I don't get it, if you can put a 3S lipo in the slash, why most of the people talk about using a 2S lipo in it?
    I'm totally new to RC cars, but I've been flying electric Helis for about 6 months, so I'm very familiar with Lipos and my first choice would be a 3S.
    Am I missing something?

  2. #2
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    3s is usually to fast for people that just want to bash. 2s geared right is fine for bashing.
    E-Revo - Single 700-HO - SPC 2s 8K LiPo

  3. #3
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    3s=more broken parts and less control unless you plan on driving up and down your street
    HARDCORR RACING

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    I think alot of it has to do with cost too may-be? I'm with you, I don't get it. It is more fun to have too much power..... for me anyway. Holding the throttle wide open gets boring after a while. 3s makes you work for it!
    ****** out Rustler
    Slash 4x4 gettin' close

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    3s causes temp problems sometimes too, often offroad, which is where most people like to drive.

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    Good driver = less broken parts
    temp problems = gearing too high
    ****** out Rustler
    Slash 4x4 gettin' close

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    3s still can cause temp problems even when geared low.

    and with all that power, you're scared to touch the trigger too hard. lol

  8. #8
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    I ain't skeerd. lol
    ****** out Rustler
    Slash 4x4 gettin' close

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    It's all in where you run and the skill you have, I run 4s in my Slash with an MMM/Medusa combo. This may be way too much for some but it's what I like and very driveable with proper throttle control on short grass and the right tires. Explosive power at your fingertip and the sight of the roost generated outback along with the impressive acceleration just brings a smile to my face. One BIG reason why I love modern rc....

  10. #10
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    Right now it's all speculation untill we actually get our hands on one to see. However just going by the Chart Traxxas showed about the relative speed with 2s and 3s with the Gearing we are guessing that 2s will be the sweet spot for Racing on a track. Only time will tell if this is right.

    In the meantime I was wondering if this battery would be a good one to use with the Velineon system. http://www.*********.com/*********/s..._hardcase_pack
    I'm just not sure with it being a 2s2p? If it is OK to use in this application, then it's one heck of a deal!
    Savage-Modified!, E-Revo VXL, Slash 2wd, Mini-T

  11. #11
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    Quote Originally Posted by Memnoch
    Right now it's all speculation untill we actually get our hands on one to see. However just going by the Chart Traxxas showed about the relative speed with 2s and 3s with the Gearing we are guessing that 2s will be the sweet spot for Racing on a track. Only time will tell if this is right.

    In the meantime I was wondering if this battery would be a good one to use with the Velineon system. http://www.*********.com/*********/s..._hardcase_pack
    I'm just not sure with it being a 2s2p? If it is OK to use in this application, then it's one heck of a deal!
    it could be 2s6p and you'd be fine so long as it fit. the 2s2p stands for 2 cells in series and 2 in parallel. basically it's two sets of 2 cell packs...
    *** (3.7v + 3.7v = 7.4v) in parallel with (3.7v + 3.7 = 7.4v) ***

    and for those who dont know...

    series - voltage is added together while capacity remains the same
    parallel - capacity is added together while voltage remains the same

  12. #12
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    Quote Originally Posted by fisheydude
    I ain't skeerd. lol
    you would be if you were on a street with cars and curbs every where and no money for replacing/upgrading (spent all money actually getting the buggy/truck)

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    ok, I get the idea now, but if you "learn" how to handle a 3S lipo you will be accelerating less than with the 2S, doesn't this means your battery will last longer? of course I'm comparing two batteries, a 2S and a 3S, each one with the same mha.

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    3s = noobie choice
    2s = people who race

    I have some fast stuff, and like power....but I race. So 3s is pointless, its not a good feel for the track at all. If I wanna chase goats or impress people that never saw an rc, I would run a 3s. Its common knowlege that traxxas builds stuff for bashers and noobies(cheap and tough vehicles RTR) so they make them capable of what they want to do. The noobies go for extreme power to make up for lack of experience and it gives the feeling of being fast. I am not knocking anyone, just tellin ya why 3s will fit and who goes that route.

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    Thanks LunchboX! In the meantime I think I'll go ahead and order a couple of those packs. For the price they look like a steal of a deal.
    Savage-Modified!, E-Revo VXL, Slash 2wd, Mini-T

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    If you plan to race check your tacks rules, I know mine is planning on limiting the 4x4 electric class to 2s Lipo.

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    "chase goats".... hmmm...
    maybe i'll get a few 3s batteries just for this purpose, it sounds like it could be a whole lotta fun.

    ... here goatie goatie goatie.

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    poor goats lol

    i'm sure you could catch a goat on 2s. my rustler vxl could easily catch a rabbit, but the rabbits turn so quickly...

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    My dogs stand no chance then! Time to terrorize the pooches!
    Savage-Modified!, E-Revo VXL, Slash 2wd, Mini-T

  20. #20
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    I run 3s in my Slash with stock gearing. I think the truck is a ton of fun, but it is difficult to drive. It takes a very sensitive throttle finger.

  21. #21
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    i have to run 2s because i run into big temp easily.
    rtr slash 4x4
    2s lipo
    some other rc stuff

  22. #22
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    BUY A FAN!! BECAUSE YOU CAN NEVER HAVE ENOUGH POWER!!!! 3s ALL THE WAY
    Drive it, Break it, Fix it, Love it, Repeat

  23. #23
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    If you guys drove a good set up on 2s at a track, you wouldnt touch the 3s truck again.

  24. #24
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    Quote Originally Posted by outkast187
    3s = noobie choice
    2s = people who race

    I have some fast stuff, and like power....but I race. So 3s is pointless, its not a good feel for the track at all. If I wanna chase goats or impress people that never saw an rc, I would run a 3s. Its common knowlege that traxxas builds stuff for bashers and noobies(cheap and tough vehicles RTR) so they make them capable of what they want to do. The noobies go for extreme power to make up for lack of experience and it gives the feeling of being fast. I am not knocking anyone, just tellin ya why 3s will fit and who goes that route.
    I've been wondering which is better 2s or 3s, i plan to race mostly and bash some. thanks

    kinda sounds like your knocking traxxas here, i'm really wanting a 4x4 sc, in your opinion is there something better out there? I have had a revo from launch and it has been a great racer, basher. I could not have asked for a better truck, so naturally i looked at traxxas
    revo 2.5r - 3.3;12/29/09 Slash 4X4 in hand

  25. #25
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    Quote Originally Posted by johnbrumbaugh
    I've been wondering which is better 2s or 3s, i plan to race mostly and bash some. thanks

    kinda sounds like your knocking traxxas here, i'm really wanting a 4x4 sc, in your opinion is there something better out there? I have had a revo from launch and it has been a great racer, basher. I could not have asked for a better truck, so naturally i looked at traxxas
    For racing the majority seems to be favoring the 2s Packs. Get a Higher C rating (30C or more) for best performance and to keep the temps down. I'm ordering the ********* 2s2p 5200mah packs (30C rating) for now. They are cheap and have the best specs for the money that I have found. Don't want to spend too much on the batteries yet since this will be my first 'Racing' Electric vehicle I've had in about 12 years!

    BTW, sounds like you have almost the exact same Revo that I used to have! 2.5 upgraded to 3.3, I also got the 3R Racing Chassis for mine, It's the same length as the stock 3.3 Revo chasis, but it moves everything forward a bit to get better weight distribution front to back. Cuts back on the wheelies a lot!
    Savage-Modified!, E-Revo VXL, Slash 2wd, Mini-T

  26. #26
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    ya i had the 2.5 with a 3.3 in it, i'm still running the stock chassis. i really can't wait for the slash, i think the center dif and cvd's are going to me my first upgrades.
    revo 2.5r - 3.3;12/29/09 Slash 4X4 in hand

  27. #27
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    Ok.. in need of some help on how C rating will affect Punch ? I know more is usually better, but wouldn't there be a point when you have plenty. On a Stock traxxas brushless system like in the Slash 4x4, I have read it will draw approx 65amp max (again, I am only going by what I read).. A 20C 5000mAh 2s has this covered.. Would a 30C really give you more Punch.

    thanks yet again.
    Always in Trouble for trying to help out.

  28. #28
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    Quote Originally Posted by madkawi650
    Ok.. in need of some help on how C rating will affect Punch ? I know more is usually better, but wouldn't there be a point when you have plenty. On a Stock traxxas brushless system like in the Slash 4x4, I have read it will draw approx 65amp max (again, I am only going by what I read).. A 20C 5000mAh 2s has this covered.. Would a 30C really give you more Punch.

    thanks yet again.
    Anyone?? I am wondering the same thing. Looking to buy batteries really soon.

  29. #29
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    The higher C rating would basically mean under a heavy load, the pack will be less likely to drop in voltage so it would seem to have more punch because you have a higher voltage.

  30. #30
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    I like 3s, never get enough power. Controlling is not a problem. Temp may be a problem sometimes, just don't go crazy on it and gear properly.

    I run all my R/C buggies and trucks with 3s, or 6s like for the E-Revo. I am going to get the 4x4 Slash RTR but I would think I have to use 2s lipos because of the fitting. There doesn't seem to be a 3s out there with a r/c nimh stick 6 cell pack size - other than those really expensive ones like MaxAmp (I think they have 3s lipos that's the size of the 6 cell nimh stick pack) - but that's out of my budget for 1 lipo. I like ********* but they dont' seem to have any 5000 mah 3s packs out there that would fit in the slash. BTW I'm talking about lipos with at least 5000 mah.

  31. #31
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    Quote Originally Posted by madkawi650
    Ok.. in need of some help on how C rating will affect Punch ? I know more is usually better, but wouldn't there be a point when you have plenty. On a Stock traxxas brushless system like in the Slash 4x4, I have read it will draw approx 65amp max (again, I am only going by what I read).. A 20C 5000mAh 2s has this covered.. Would a 30C really give you more Punch.

    thanks yet again.

    The VXL motor can draw 65 constant to 100 surge amps depending on gearing track etc etc
    So.....

    5000mah @ 20c 100amps
    5000mah @ 30c 150amps

    20c will work fine 30c will give you more head room to speak. Battery will not be working as hard, stay cooler. That be said you may or may not notice any difference depends on track / bashing area, gearing etc.

  32. #32
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    I think one of them green series 9.9v batteries would be the best, not too much power but more than a 2s and lasts way longer, usage wise.

  33. #33
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    What is a "Green Series" Battery ?

    Also How about a 9.6 NiMh 5000mAh... would this run better than a 2S lipo ? Maybe a bit more like a 3S but not quite as brutal. ???

    Also... Is this a good brand name battery ? Anyone have any problems with Venom batteries ?

    Linky thingy --> http://www.horizonhobby.com/Products...rodId=VNR15009
    Always in Trouble for trying to help out.

  34. #34
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    everyone has problems with venom if that answers your question

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    Sure does... Thanks.

    I was hoping for the opposite answer because it seems to be the best priced / highest spec Lipo I can get in Nova Scotia... the next best deal would be Dynamite 3S 5300 25 for $140. that Venom was only $80.
    Always in Trouble for trying to help out.

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    Anyone considering LiFe batteries?

    I was searching for some batteries, considering what people say about 3S being to much and 2S being ok. I found LiFe batteries, a 3s LiFe batterie has a voltage of 9.9V, not tha much as a 3S lipo, but just a little more than a 2S Lipo. They are heavier than lipo but they can be charged VERY fast and they don't have all the Lipo "problems".
    Do you think they will work?

  37. #37
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    Quote Originally Posted by outkast187
    3s = noobie choice
    2s = people who race

    I have some fast stuff, and like power....but I race. So 3s is pointless, its not a good feel for the track at all. If I wanna chase goats or impress people that never saw an rc, I would run a 3s. Its common knowlege that traxxas builds stuff for bashers and noobies(cheap and tough vehicles RTR) so they make them capable of what they want to do. The noobies go for extreme power to make up for lack of experience and it gives the feeling of being fast. I am not knocking anyone, just tellin ya why 3s will fit and who goes that route.
    HUH am I Missing something I have a slash and its my slow one with a VXL out of a destroyed rustler experiment. Anyway I run it on 3s 5000s just let my 5 year old nephew run it today also. Yes its fast wheelies YES if you want to do one. Also will go so fast on the street that the air will flip it, IF that what you want.
    But also do laps for time @ track 3s is great man. I have a bunch of 2s5000 That I bought for my Brushless Revo for 4s I never use them. Always 6s. Also Have a Slash with a MMM 2650 on 6s now thats too much.
    I am planning on putting that motor+esc in this 4wd one when it comes out.
    BTW I also do speed runs in my brushless Revo kind of a competition we have going so far 86Mph on 6s and Over has me beat @92. something MPH
    Does that mean we are noobs looking for a feeling of going fast? or is it fast.
    3s set up right is awsome on the Track. On the Castle controllers they can be programmed to act what way you like. Also Most good radios can also.
    3s also draws less amperage from the battery beacuse it is a higher voltage. So for the same speeds it will run cooler. Yes cooler but set up correctly for the same speeds. Anyway I am going back to chasing Goats
    havnt failed I just found 1000 ways that wont work

  38. #38
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    Quote Originally Posted by madkawi650
    What is a "Green Series" Battery ?

    Also How about a 9.6 NiMh 5000mAh... would this run better than a 2S lipo ? Maybe a bit more like a 3S but not quite as brutal. ???

    Also... Is this a good brand name battery ? Anyone have any problems with Venom batteries ?

    Linky thingy --> http://www.horizonhobby.com/Products...rodId=VNR15009
    Yes smoked one of my Castle controllers with those stupid batteries.
    havnt failed I just found 1000 ways that wont work

  39. #39
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    Quote Originally Posted by fgranados75
    I was searching for some batteries, considering what people say about 3S being to much and 2S being ok. I found LiFe batteries, a 3s LiFe batterie has a voltage of 9.9V, not tha much as a 3S lipo, but just a little more than a 2S Lipo. They are heavier than lipo but they can be charged VERY fast and they don't have all the Lipo "problems".
    Do you think they will work?
    so long as you have a charger that works with them and can mount them in the truck, they should work pretty well

  40. #40
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    RcPocketRocket isnt MMM and 2650 motor only capable of running on 4s and the 2200kv is the one that can do 6s ? Just asken bc im town between those two motors and i want to be able to run 6s Thanks

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