R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric On-Road

Reply
 
Thread Tools Search this Thread
Old 11-21-2007, 01:03 PM   #151
Tech Master
 
slakr's Avatar
 
Join Date: Jan 2007
Location: NC
Posts: 1,731
Trader Rating: 31 (100%+)
Default

Quote:
Originally Posted by Nexus View Post
What did you end up with?
I ended up ording a JST EH 2S HARNESS. It has the JST EH connector on one end to connect to the CORE LiPo balance plug. The other end of the harness has a HYPERION LBA 10 balance connector which I just cut off. I then soldered on a 2mm female banana plug to the middle wire (node 1).

The Scorpion is setup for the Orion packs and thus its charger adapter (SC8ADP) has 4mm male banana plugs for battery +/- and a 2mm male banana plug for the balance tap. I simply replaced the 4mm male banana plugs with a male Deans plug. The remaining two wires (battery +/-) on the 2S HARNESS are not used; and probably shouldn't be used for charging as they are very small and not really meant to carry 5A (1C).

Just a note on the Scorpion Charger. It is a balancing charger and the balance wire from the charger must be connected properly and always used during charging (as per Howard Matos of FMA).

Anyway, I hope that helps.
slakr is offline   Reply With Quote
Old 11-21-2007, 10:32 PM   #152
Tech Champion
 
AdrianM's Avatar
 
Join Date: Aug 2001
Location: Tampa, FL
Posts: 5,914
Trader Rating: 4 (100%+)
Default

Quote:
Originally Posted by slakr View Post
Currently I own two Orion Carbon 3200 packs that I run in my T2R. No question in my mind that if it were not for BL/LiPo, I would not be back running electrics. I have never had a problem with these batteries or my Scorpion charger, so I am definitely hooked on this technology.

Now, that being said; I just purchased a Core pack to use in my T4 with a Novak 13.5SS Pro motor. I considered several different packs before making this purchase and the excellent information provided by Shawn and Adrian were definitely a deciding factor.

Shawn provided great technical information on the technology and the Core packs. Adrian was very courteous; even suggesting a couple of competitive packs for one person because that person wasn't necessarily sold on the Core product, but Adrian wanted to ensure that if that person didn't buy the Core product, that he at least get a product with good quality and safety.

IMO, you couldn't ask for much more...

Is the big brown truck here yet with my Core LiPo?
Thanks for the kind words! Let us know what you think after you run it
__________________
Adrian Martinez
What I run: Schumacher Mi5/Associated RC10R5.1/Associated RC12R5.2/Futaba/HobbyWing/Team EA Motorsports/BSR Racing
Where I run: Florida Indoor R/C Complex/Thunder Racing/Florida On Road State Series
AdrianM is offline   Reply With Quote
Old 11-22-2007, 01:41 AM   #153
Tech Champion
 
skypilot's Avatar
 
Join Date: Mar 2007
Posts: 9,524
Trader Rating: 14 (100%+)
Default

don't know about the 3200's but i ran my core 5000 for the first time tonight, my oh my, this battery rips.
skypilot is offline   Reply With Quote
Old 11-22-2007, 01:44 AM   #154
Tech Champion
 
skypilot's Avatar
 
Join Date: Mar 2007
Posts: 9,524
Trader Rating: 14 (100%+)
Default

see at 8:59 sharp
skypilot is offline   Reply With Quote
Old 11-22-2007, 02:00 AM   #155
Tech Champion
 
JayBee's Avatar
 
Join Date: Mar 2004
Location: 12TH-MAN COUNTRY
Posts: 6,813
Trader Rating: 31 (100%+)
Default

Get to bed so we can dial the cars in Friday
__________________
R C 3 G R A F I X _ F U S I O N . G R A P H I X _ S E A T T L E - R/C - R A C E R S _ E M E R A L D C I T Y R C . C O M

A E - 12R5.2 _ S M - REV8 PRO
JayBee is offline   Reply With Quote
Old 11-22-2007, 04:52 PM   #156
Tech Elite
 
Skiddins's Avatar
 
Join Date: Feb 2006
Location: Windsor, UK
Posts: 4,761
Default

What are the tell tale signs that your Lipo pack (any manufacturer) has reached the end of it's life?

Thanks
Skiddins
__________________
Xray T4'18, T4'14 (Wet Car)
Xray X12 2018
Xray X1'16
wlrc.co.uk (West London Racing Centre)
RCDisco.co.uk
Skiddins is offline   Reply With Quote
Old 11-23-2007, 06:03 AM   #157
Tech Master
 
sportpak's Avatar
 
Join Date: Oct 2006
Location: Ft Wayne, IN
Posts: 1,314
Trader Rating: 26 (100%+)
Default

Quote:
Originally Posted by Skiddins View Post
What are the tell tale signs that your Lipo pack (any manufacturer) has reached the end of it's life?

Thanks
Skiddins
I would look for poor performance and constant balance issues. Other then that, I don't know what would happen just short of going "critical".
__________________
-Tamiya TA05-R - Tamiya M05 - Summit Raceway Ft. Wayne, IN

www.summitrcraceway.com
sportpak is offline   Reply With Quote
Old 11-23-2007, 06:55 AM   #158
Tech Champion
 
AdrianM's Avatar
 
Join Date: Aug 2001
Location: Tampa, FL
Posts: 5,914
Trader Rating: 4 (100%+)
Default

Quote:
Originally Posted by Skiddins View Post
Have you managed to test a Core pack to see how many cycles it will actually take before performance drops off at all?
Schumacher UK started doing this but gave up after 6 months of running/cycling with no changes in the pack performance. It had over 200 cycles at that time and its still running perfectly now about 8 months later with god knows how many more cycles on it.

This pack will take a VERY LONG time to wear out. The only way to kill it is to over charge it or over discharge it...but that goes for any LiPo.
__________________
Adrian Martinez
What I run: Schumacher Mi5/Associated RC10R5.1/Associated RC12R5.2/Futaba/HobbyWing/Team EA Motorsports/BSR Racing
Where I run: Florida Indoor R/C Complex/Thunder Racing/Florida On Road State Series
AdrianM is offline   Reply With Quote
Old 11-23-2007, 06:55 AM   #159
Tech Elite
 
Skiddins's Avatar
 
Join Date: Feb 2006
Location: Windsor, UK
Posts: 4,761
Default

Quote:
Originally Posted by Shawn Palmer View Post
Skiddins,
The Trakpower pack however warns to expect only "100 raceworthy cycles". That's concerning to me, as it suggests that the cycle life of the pack has been compromised in order to gain discharge performance. I've seen that in the airplane world as well.
Have you managed to test a Core pack to see how many cycles it will actually take before performance drops off at all?
__________________
Xray T4'18, T4'14 (Wet Car)
Xray X12 2018
Xray X1'16
wlrc.co.uk (West London Racing Centre)
RCDisco.co.uk
Skiddins is offline   Reply With Quote
Old 11-23-2007, 09:49 AM   #160
Tech Champion
 
JayBee's Avatar
 
Join Date: Mar 2004
Location: 12TH-MAN COUNTRY
Posts: 6,813
Trader Rating: 31 (100%+)
Default

Quote:
Originally Posted by Skiddins View Post
Have you managed to test a Core pack to see how many cycles it will actually take before performance drops off at all?
See Adrians post above ....
__________________
R C 3 G R A F I X _ F U S I O N . G R A P H I X _ S E A T T L E - R/C - R A C E R S _ E M E R A L D C I T Y R C . C O M

A E - 12R5.2 _ S M - REV8 PRO
JayBee is offline   Reply With Quote
Old 11-25-2007, 09:40 PM   #161
Tech Champion
 
Join Date: Nov 2002
Location: Chicago, IL
Posts: 7,664
Trader Rating: 37 (100%+)
Default

Quote:
Originally Posted by AdrianM View Post
Schumacher UK started doing this but gave up after 6 months of running/cycling with no changes in the pack performance. It had over 200 cycles at that time and its still running perfectly now about 8 months later with god knows how many more cycles on it.

This pack will take a VERY LONG time to wear out. The only way to kill it is to over charge it or over discharge it...but that goes for any LiPo.
NICE!

Got to run mine in the Mi3 and it was flawless. No racing that day so I have yet to test it against my EPs. But loving that I can run back to back without charging and also use 1 pack the whole day!

Now if we can get Core to send out a better decal sheet... ;p
Nexus is offline   Reply With Quote
Old 11-25-2007, 10:51 PM   #162
Tech Champion
 
JayBee's Avatar
 
Join Date: Mar 2004
Location: 12TH-MAN COUNTRY
Posts: 6,813
Trader Rating: 31 (100%+)
Default

Quote:
Originally Posted by Nexus View Post
NICE!
Now if we can get Core to send out a better decal sheet... ;p
DITTO!!! Let's get Core to make some bigger & better decal sheets! I wanna advertise Core on my lids
__________________
R C 3 G R A F I X _ F U S I O N . G R A P H I X _ S E A T T L E - R/C - R A C E R S _ E M E R A L D C I T Y R C . C O M

A E - 12R5.2 _ S M - REV8 PRO
JayBee is offline   Reply With Quote
Old 11-26-2007, 11:47 AM   #163
Tech Regular
 
stuey's Avatar
 
Join Date: Jan 2006
Posts: 393
Trader Rating: 1 (100%+)
Default

are these lipos hard cased and do they fit a corally phi
stuey is offline   Reply With Quote
Old 11-26-2007, 11:49 AM   #164
Tech Champion
 
Join Date: Nov 2002
Location: Chicago, IL
Posts: 7,664
Trader Rating: 37 (100%+)
Default

Quote:
Originally Posted by stuey View Post
are these lipos hard cased and do they fit a corally phi
hardcase yes.

not sure about a Phi.

It's probably close if not the same dimension as an Orion/Peak 4800 so if that fits then yes.
Nexus is offline   Reply With Quote
Old 11-26-2007, 12:33 PM   #165
Tech Regular
 
Shawn Palmer's Avatar
 
Join Date: Sep 2003
Location: Speed Passion USA Support HQ
Posts: 498
Default

Signs that your (insert brand here) lipo pack has reached it's usufull lifespan:

1) Lipos generally don't degrade much if any at all over the normal 300+ cycle lifespan (you'll see more or less cycles depending on the brand). So... if you notice anything "it wasn't doing before" it may be time to give it a serious look.

2) Ending temperature
As a pack reaches the end of the line, it's internal resistance starts climbing rapidly with each additional cycle. The first observed result is usually a hotter pack at the end of a run. It's working harder to supply the juice, so it gets hotter than you're used to seeing.

3) Output performance
Another commonly observed result is that the pack just doesn't have the rip it used to. Internal resistance again, and as it increases the pack can't deliver the same amps it used to.

4) Reduced capacity
I make sure and get a "baseline" for pack performance soon after the 20th cycle (fully broken in pack). I record starting and finishing temps on a test vehicle, the ESC and settings used, ambient temps, and driving style/venue used. I also drive the pack all the way to the correct lipo cutoff on the ESC, and then measure the Mah the charger puts back in. Every hundred cycles or so, I do all the above again and look for differences (warmer pack, less Mah in, less power and etc.). All packs are a little different, so sometimes I'll catch a pack with less rip, or higher temps, or less Mah in than before - there's not one or another that always comes first. But looking at Mah back into the pack once you have a baseline for it is the easiest way to judge the overall pack health.

One of the main points about all this is here: Once a pack starts going "downhill" it will continue to underperform, get hot, and not take full Mah in on a steepening downward spiral with each cycle. So it's best to immediately stop using and dispose of properly a pack you're sure is on a steep decline. A "just barely alive" lipo pack can sometimes fool chargers and cause a safety hazard if they are continued to be used.

Decal sheets:
Point taken and I agree! I'll shake somebody down to have more/bigger ones made

Core pack cycles:
I continue to race, test other things with, and in general put on as many cycles as I can on the original CORE 5000 1st production pack I have. I have just under 300 cycles on it as of today, with zero degredation so far from the day I got it. This one's been used and abused as hard as I can run it under normal circumstances, so when it decides to slide it will represent a bare minimum cycle life expectation for these packs. With my previous experience with lots of different packs, this one is looking like it will end up to be a good 400-500 cycle pack.
__________________
Shawn Palmer
Speed Passion USA Sales Manager
USAsupport <at> King-Golden <dot> com
www.SpeedPassion.net
www.SpeedPowerrc.com
Shawn Palmer is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
SMC Lipos 7.4 5000mah wfdfiremedic Electric On-Road 624 08-27-2008 10:09 AM
CORE 5000MAH LIPO FOR SALE jsfrcfrk R/C Items: For Sale/Trade 5 08-05-2008 11:09 AM
Core R/C 5000mah 2s 7.4volt LiPo SchuMi2 Australia For Sale/Trade 2 06-08-2008 04:24 AM
New SMC Lipos 7.4v 2s 4000 and 5000mah HardCase IOwNMkeG R/C Items: For Sale/Trade 4 03-30-2008 01:54 PM
Core RC 5000mah Hard Cased LiPo - Brand New!! XACDesigns R/C Items: For Sale/Trade 8 01-08-2008 11:25 AM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 01:36 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net