Lipo 4S or 5S

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Old 07-06-2009, 09:08 PM
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Default Lipo 4S or 5S

Hi - I'm wondering if there would be a noticeable difference between 4S + 5S packs. Running on a 1/8 electric buggy.
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Old 07-06-2009, 09:41 PM
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Originally Posted by vannon View Post
Hi - I'm wondering if there would be a noticeable difference between 4S + 5S packs. Running on a 1/8 electric buggy.
Very noticeable difference. Simply multiply the KV rating of your motor to the total voltage and that will give you your motor rpms.
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Old 07-06-2009, 09:56 PM
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Old 07-06-2009, 10:01 PM
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from what I can gather a 1700-2000KV motor running on 5Cells is the most efficient set up you can run.

Alex
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Old 07-06-2009, 11:10 PM
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5 cells will give you ALOT of power... Alot of people run 4 cells just so that it is more controllable, but if you really want you can get the 5 cell just for longer run time and turn down the throttle to have the same controllability of a 4 cell; that's what I would do if you have the money .
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Old 07-07-2009, 05:53 AM
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Originally Posted by B44Zane View Post
5 cells will give you ALOT of power... Alot of people run 4 cells just so that it is more controllable, but if you really want you can get the 5 cell just for longer run time and turn down the throttle to have the same controllability of a 4 cell; that's what I would do if you have the money .
5S is just as drivable as 4S so long as you get a slower motor to go with it. The main advantage is more efficiency. If you run a 2000 rpm/v motor for 4S go down to a 1700 for 5S and it will feel nearly identical but with less heat and longer run times. Don't turn down the EPA on your controller to get less speed, you will not get the benefit of running 5S. Get the lower Kv motor.
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Old 07-07-2009, 06:00 AM
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I have a Mamba Monster 2200 + Losi 8ight + 15t pinion

I guess the 4S would be best?
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Old 07-07-2009, 06:09 AM
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I would run 4S on the setup you are looking into.
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Old 07-07-2009, 06:31 AM
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Originally Posted by B44Zane View Post
5 cells will give you ALOT of power... Alot of people run 4 cells just so that it is more controllable, but if you really want you can get the 5 cell just for longer run time and turn down the throttle to have the same controllability of a 4 cell; that's what I would do if you have the money .
4 cell or 5 cell isn't going to have any affect on run time unless you do as Kufman suggested. Cell count only affects voltage not the amount of run time. If you want longer run time you go larger on the capacity side.

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Old 07-07-2009, 06:32 AM
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Originally Posted by vannon View Post
I have a Mamba Monster 2200 + Losi 8ight + 15t pinion

I guess the 4S would be best?
Agreed 4S would be great with that set-up.

Jason
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Old 07-07-2009, 07:44 AM
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I have driven a Mamba 2650kv system on 4s and a losi 2100 system on 5s in a losi 8 buggy and the 5s will feel a lot more punchy even with the lower kv. It will be more efficient and should create less heat on 5s. If it is too much you can turn it down either with your epa on the radio which would give you more run time because you would not every be using full power. Or your can change the throttle curve on some systems so it ramps the power up slower. Also the 5s packs from losi are cheaper than their 4s packs.
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Old 07-07-2009, 08:00 AM
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Originally Posted by vannon View Post
I have a Mamba Monster 2200 + Losi 8ight + 15t pinion

I guess the 4S would be best?
yea def 4s on that setup
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Old 07-07-2009, 08:20 AM
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Originally Posted by mwiley View Post
I have driven a Mamba 2650kv system on 4s and a losi 2100 system on 5s in a losi 8 buggy and the 5s will feel a lot more punchy even with the lower kv. It will be more efficient and should create less heat on 5s. If it is too much you can turn it down either with your epa on the radio which would give you more run time because you would not every be using full power. Or your can change the throttle curve on some systems so it ramps the power up slower. Also the 5s packs from losi are cheaper than their 4s packs.
If you follow Castles suggestions you not supposed to use the Throttle EPA to adjust power. That's what the throttle curve and punch control settings are for in the esc. If you don't want mass amounts of power run the punch at 70 to 90% and tweak the curve to suit your needs. It's there for a reason.

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Old 07-07-2009, 11:37 AM
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Thanks for all the info guys. I have purchased a 4S 5000mah.

I will play around with a 13t and 15t pinions.
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Old 07-07-2009, 12:01 PM
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Lower kv & higher voltage is better. I used to run a nue 2550 on 3s(28305rpm) and now run a nue 1850 on 4s(27380rpm). The total rpm is slower but has way more torque. 2550 used 400-450mah/min the 1850 uses 180-210mah/min on same track. Voltage is our friend
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