RCCrawler Forums

cartronicshn · 06-26-2009, 10:59 AM

Just want to know what packs you are using on your c.c. with both stock motors and the few who are running the cobalts? what config 2s or 3s? what have you done to fit said lipo packs? also any links for packs that will fit and are over 1300mah.

cartronicshn · 06-27-2009, 10:20 AM

No one has enjoyed the advantages of lipo on a c.c. ?

Jamus · 06-27-2009, 01:30 PM

Well, you aren't alone, i want to run 3s on mine since 7.2 volts just isn't getting it done. Problem is I keep buying other things with my lipos charger money, haha.

cartronicshn · 06-27-2009, 06:09 PM

Jamus, you got me wrong, i already did the 3s thing with the 454 motors from jrh, the metal gears didn't hold up

, so now i am looking for a small 2s pack with at least 1800 mah and 25c rating that will fit on my c.c.

Jamus · 06-27-2009, 07:58 PM

Oh I see, you're looking for something a specific physical size, got ya.

dowtort · 07-01-2009, 09:43 PM

Stock motors and esc: Most often I run one of my T-Rex packs (3S, 2200mah), velcro'ed to the top of the front servo. So not sure what you mean about fitting, since that's a huge pack. Bit of overkill, but w/o lipo cutoff, I can run it for half hour w/o worrying about killing it. I ran as small as 800mah. I ran pair of 2S 800's from TrueRC, for 4S (each connected to one of the two stock connectors, rather then shorting one of them for 3s), but i ended up puffing one of them. Could have been due to bushing problem (overloaded motor).

for 2x2s setup, i had either both side by side on front servo, or one on servo, and one in battery "tray", before i moved the esc and RX down into it. If i were to do 2x2s again, i would put one on each axel.... If you're running 2s, you could do two smaller packs in parallel if you're having problem fitting a bigger pack?

CKRC 1500 20C packs look like they would fit into the battery compartment w/o problem.

BigArt · 07-01-2009, 10:50 PM

I'm running 2C, 1700mah, 20c rating lipo with my cc with Banbots wired parallel and losi mini crawler esc. Works great.

BigArt · 07-01-2009, 11:10 PM

cartronicshn · 07-02-2009, 08:39 AM

What's the rating on that lipo? i am using two 454's from JRH, so my amp draw is a little higher than stock.

Edit: Never mind i found the specs, i wonder if that 20c rating would hold against the two 454's...

Capacity(mAh) 1750
Config(s) 2
Discharge(c) 20
Weight(g) 110
Max Charge Rate (C) 2

mtnhrdgr2 · 07-02-2009, 09:50 AM

I asked a similar question to JRH. He recommended at least a 40a lipo

(HH) Tech Questions and Customer support thread

cartronicshn · 07-02-2009, 10:33 AM

Quote:

Originally Posted by mtnhrdgr2

I asked a similar question to JRH. He recommended at least a 40a lipo

(HH) Tech Questions and Customer support thread

Thanks

, although i am unclear, 40 a with a 3s right? couldn't the c rating be lower for a 2s pack, i can't picture how huge a 40a rating would have to be

mtnhrdgr2 · 07-02-2009, 11:05 AM

Per JRH, using two of his 454s and a FXR, he had recommended a 40amps continuous battery. For example, a 2200mah 2S lipo rated at 30C would put out 66amps continuous (2.2 * 30 = 66amps) The amp rating is calculated the same way for 2S 3S 4S, etc...

You wont be able to use the really tiny lipo packs but certainly no need for the big boys. You'll be able to find 40amp lipos that are smaller than the standard 7.2volt nimh stick pack

The standard 7.2 volt stick pack is around 86mm x 33mm x 16mm

2S @ 60 amps 69mm X 45mm X 18mm
3S @ 60 amps 69mm X 45mm X 26mm
http://www.maxamps.com/Lipo-2000-74-Pack.htm

2S @ 55 amps 110mm x 34mm x 19mm
3S @ 55 amps 110mm x 35mm x 30mm
http://holmeshobbies.com/product.php...&cat=10&page=1

The heat that JRH was talking about...he said that it would be fine with the 2S (7.2V) but he had never tried it with a 3S (11.1V). Since the 3S is a higher volt, there most likely be some heat issues.

Of course, you could go for lower amp ratings (ie lower C ratings) but the battery would work harder and be easier to overheat, thus shorter battery life.

I hope this helps. Happy crawling.

cartronicshn · 07-02-2009, 11:28 AM

Thanks mtnhrsgr2

Redharris · 08-11-2009, 09:25 PM

Why not go 2S2P lipo pack?

cdw327 · 08-12-2009, 06:31 AM

i run the exact smae set - the bands

brees · 08-12-2009, 08:07 AM

I run these style lithium ion cells. i run them is a 3s configuration for my banebot motors and their size allows me to put the pack in the original battery compartment. although, i will admit, that is not the ideal weight distribution. here is what they look like:

http://upload.ecvv.com/upload/Product/200810/China_Li_ion_18650_2200_mAh_3_7V_SANYO_Battery_Cel l20081062055351.JPG

i believe they are rated somewhere around 2000 Mah. they give an excellent runtime, and are very sturdy compared to soft pack li-pos. you can solder them up like NiMhs

djr01974 · 08-12-2009, 10:18 AM

Hey guys new to this site and the crawling scene ... I've been into r/c boats and cars for a long time now just not the crawlers.. I am enjoying it though. I have a cc and what I did is just like on the evx esc , I jumped one side of the esc and am running a 11.1 volt 4000 mah lipo in mine with no problems at all , loads of run time . I also installed a lipo saver inline as to not let the volts drop to far to ruin the battery . But let me tell you I have yet to have even come close to getting that low on volts as I get tired of standing and walking before its goes dead .

06-26-2009, 10:59 AM	#1
cartronicshn I wanna be Dave Join Date: May 2006 Location: HONDURAS...ROCK HEAVEN Posts: 5,076	any lipo users on here? Just want to know what packs you are using on your c.c. with both stock motors and the few who are running the cobalts? what config 2s or 3s? what have you done to fit said lipo packs? also any links for packs that will fit and are over 1300mah.

06-27-2009, 06:09 PM	#4
cartronicshn I wanna be Dave Join Date: May 2006 Location: HONDURAS...ROCK HEAVEN Posts: 5,076	Jamus, you got me wrong, i already did the 3s thing with the 454 motors from jrh, the metal gears didn't hold up, so now i am looking for a small 2s pack with at least 1800 mah and 25c rating that will fit on my c.c.

07-01-2009, 10:50 PM	#7
BigArt Newbie Join Date: Apr 2009 Location: Newark Posts: 33	2c lipo with cc I'm running 2C, 1700mah, 20c rating lipo with my cc with Banbots wired parallel and losi mini crawler esc. Works great.

07-01-2009, 11:10 PM	#8
BigArt Newbie Join Date: Apr 2009 Location: Newark Posts: 33	2c lipo with cc

07-02-2009, 08:39 AM	#9
cartronicshn I wanna be Dave Join Date: May 2006 Location: HONDURAS...ROCK HEAVEN Posts: 5,076	What's the rating on that lipo? i am using two 454's from JRH, so my amp draw is a little higher than stock. Edit: Never mind i found the specs, i wonder if that 20c rating would hold against the two 454's... Capacity(mAh) 1750 Config(s) 2 Discharge(c) 20 Weight(g) 110 Max Charge Rate (C) 2 Last edited by cartronicshn; 07-02-2009 at 08:44 AM.

06-27-2009, 10:20 AM	#2
cartronicshn I wanna be Dave Join Date: May 2006 Location: HONDURAS...ROCK HEAVEN Posts: 5,076	No one has enjoyed the advantages of lipo on a c.c. ?

06-27-2009, 01:30 PM	#3
Jamus RCC Addict Join Date: Aug 2005 Location: Naoma, WV Posts: 1,479	Well, you aren't alone, i want to run 3s on mine since 7.2 volts just isn't getting it done. Problem is I keep buying other things with my lipos charger money, haha.

06-27-2009, 07:58 PM	#5
Jamus RCC Addict Join Date: Aug 2005 Location: Naoma, WV Posts: 1,479	Oh I see, you're looking for something a specific physical size, got ya.

07-01-2009, 09:43 PM	#6
dowtort Newbie Join Date: Apr 2008 Location: Niles Posts: 3	Stock motors and esc: Most often I run one of my T-Rex packs (3S, 2200mah), velcro'ed to the top of the front servo. So not sure what you mean about fitting, since that's a huge pack. Bit of overkill, but w/o lipo cutoff, I can run it for half hour w/o worrying about killing it. I ran as small as 800mah. I ran pair of 2S 800's from TrueRC, for 4S (each connected to one of the two stock connectors, rather then shorting one of them for 3s), but i ended up puffing one of them. Could have been due to bushing problem (overloaded motor). for 2x2s setup, i had either both side by side on front servo, or one on servo, and one in battery "tray", before i moved the esc and RX down into it. If i were to do 2x2s again, i would put one on each axel.... If you're running 2s, you could do two smaller packs in parallel if you're having problem fitting a bigger pack? CKRC 1500 20C packs look like they would fit into the battery compartment w/o problem.

07-02-2009, 09:50 AM	#10
mtnhrdgr2 Quarry Creeper Join Date: Aug 2008 Location: San Jose Posts: 250	I asked a similar question to JRH. He recommended at least a 40a lipo (HH) Tech Questions and Customer support thread

07-02-2009, 11:05 AM	#12
mtnhrdgr2 Quarry Creeper Join Date: Aug 2008 Location: San Jose Posts: 250	Per JRH, using two of his 454s and a FXR, he had recommended a 40amps continuous battery. For example, a 2200mah 2S lipo rated at 30C would put out 66amps continuous (2.2 * 30 = 66amps) The amp rating is calculated the same way for 2S 3S 4S, etc... You wont be able to use the really tiny lipo packs but certainly no need for the big boys. You'll be able to find 40amp lipos that are smaller than the standard 7.2volt nimh stick pack The standard 7.2 volt stick pack is around 86mm x 33mm x 16mm 2S @ 60 amps 69mm X 45mm X 18mm 3S @ 60 amps 69mm X 45mm X 26mm http://www.maxamps.com/Lipo-2000-74-Pack.htm 2S @ 55 amps 110mm x 34mm x 19mm 3S @ 55 amps 110mm x 35mm x 30mm http://holmeshobbies.com/product.php...&cat=10&page=1 The heat that JRH was talking about...he said that it would be fine with the 2S (7.2V) but he had never tried it with a 3S (11.1V). Since the 3S is a higher volt, there most likely be some heat issues. Of course, you could go for lower amp ratings (ie lower C ratings) but the battery would work harder and be easier to overheat, thus shorter battery life. I hope this helps. Happy crawling. Last edited by mtnhrdgr2; 07-02-2009 at 11:14 AM.

07-02-2009, 11:28 AM	#13
cartronicshn I wanna be Dave Join Date: May 2006 Location: HONDURAS...ROCK HEAVEN Posts: 5,076	Thanks mtnhrsgr2

08-11-2009, 09:25 PM	#14
Redharris Newbie Join Date: Aug 2009 Location: San Fernando Valley Posts: 49	Why not go 2S2P lipo pack?

08-12-2009, 06:31 AM	#15
cdw327 Rock Stacker Join Date: Aug 2009 Location: kalkaska Michigan Posts: 86	i run the exact smae set - the bands

08-12-2009, 08:07 AM	#16
brees Newbie Join Date: Jul 2009 Location: lima Posts: 24	lithium ion cells I run these style lithium ion cells. i run them is a 3s configuration for my banebot motors and their size allows me to put the pack in the original battery compartment. although, i will admit, that is not the ideal weight distribution. here is what they look like: http://upload.ecvv.com/upload/Product/200810/China_Li_ion_18650_2200_mAh_3_7V_SANYO_Battery_Cel l20081062055351.JPG i believe they are rated somewhere around 2000 Mah. they give an excellent runtime, and are very sturdy compared to soft pack li-pos. you can solder them up like NiMhs

Sponsored Links

08-12-2009, 10:18 AM	#17
djr01974 Quarry Creeper Join Date: Aug 2009 Location: orange county Posts: 313	Hey guys new to this site and the crawling scene ... I've been into r/c boats and cars for a long time now just not the crawlers.. I am enjoying it though. I have a cc and what I did is just like on the evx esc , I jumped one side of the esc and am running a 11.1 volt 4000 mah lipo in mine with no problems at all , loads of run time . I also installed a lipo saver inline as to not let the volts drop to far to ruin the battery . But let me tell you I have yet to have even come close to getting that low on volts as I get tired of standing and walking before its goes dead .

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Thread: any lipo users on here?