R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 10-11-2005, 10:31 AM   #511
Tech Champion
 
rayhuang's Avatar
 
Join Date: Dec 2001
Location: Cleveland Heights, Ohio
Posts: 6,511
Trader Rating: 5 (100%+)
Send a message via AIM to rayhuang
Default

Quote:
Originally Posted by letitroll
Does anyone know when the black label IB3800's will be available?

I believe that is Trinity's 3800 cell. The first were blue-and the second black. I know they were close to receiving them last week.
rayhuang is offline   Reply With Quote
Old 10-11-2005, 10:38 AM   #512
Tech Regular
 
Join Date: May 2004
Location: Buffalo, NY
Posts: 326
Trader Rating: 4 (83%+)
Send a message via AIM to letitroll
Default

Ok, I guess you would know...


A friend of mine told me that the next shipment of IB 3800's will be in a black shrink wrap and won't fall off after 5-6 runs like the older IB's...


Here is another question...


I've never run the IB Cell so I really don't know much about them. Do they actually fall off after about 5-6 runs?
letitroll is offline   Reply With Quote
Old 10-11-2005, 10:43 AM   #513
Tech Elite
 
EddieO's Avatar
R/C Tech Charter Subscriber
 
Join Date: Oct 2003
Posts: 3,414
Trader Rating: 6 (100%+)
Default

I bring them down to 5.4 for on my GFX....then I put them on a Dyna-Pulse.....then I tray the suckers, then I let them rest before charging again....


Our IB3800 cells are matched 35 amps, .90 cutoff, 6 amp charge, 5000 runout...

Our IB3800 batteries are matched by SMC....

35 amp runtime numbers are easy to convert to 30 amps....just go runtimex35=x then x/30....a 420 pack will be about 490 at 30 amps.

Voltage, there is no formula....but on average its about .015 per pack....so a 1.185 would be a 1.20 at 30 amps....(REMEMBER ON AVERAGE!)

Our GP3700 cells are matched at 30 amps, .95 cutoff 5 amp charge, 5000 runout.....

We have found these settings work good for the cell, so thats what we use.....

Our GP3700 packs are matched by Fusion Batteries.

Later EddieO
__________________
www.teambrood.com
EddieO is offline   Reply With Quote
Old 10-11-2005, 10:51 AM   #514
Tech Master
 
racer-oZ's Avatar
R/C Tech Charter Subscriber
 
Join Date: May 2003
Location: Wichita
Posts: 1,485
Trader Rating: 2 (100%+)
Default

eddieo, thanks for the help!
racer-oZ is offline   Reply With Quote
Old 10-11-2005, 12:36 PM   #515
Company Representative
 
Danny/SMC's Avatar
 
Join Date: Oct 2001
Location: Elkton, VA
Posts: 3,097
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by letitroll
Ok, I guess you would know...


A friend of mine told me that the next shipment of IB 3800's will be in a black shrink wrap and won't fall off after 5-6 runs like the older IB's...


Here is another question...


I've never run the IB Cell so I really don't know much about them. Do they actually fall off after about 5-6 runs?
There is no new IB3800. IB has been tweaking the 3800 since it came out to try to make it the best RC race cell. The latest batches have been real good voltage wise.

As far as the packs falling off after a few runss we haven't really heard of this. There are many who participate on this site who have been running IB3800 i'm sure they can let us know if there packs are holding up more than 5 runs.
Danny/SMC is offline   Reply With Quote
Old 10-11-2005, 01:43 PM   #516
Tech Master
 
racer-oZ's Avatar
R/C Tech Charter Subscriber
 
Join Date: May 2003
Location: Wichita
Posts: 1,485
Trader Rating: 2 (100%+)
Default

danny, was looking at getting a pitbull x3, any concerns that it only charges up to 7amps? i've heard most guys are charging at 8amps at large events where they want the most performance out of the run. what is your charge/discharge and storage process for the 3800's. thanks for your help!

racer-oZ
racer-oZ is offline   Reply With Quote
Old 10-11-2005, 01:55 PM   #517
Company Representative
 
Danny/SMC's Avatar
 
Join Date: Oct 2001
Location: Elkton, VA
Posts: 3,097
Trader Rating: 2 (100%+)
Default

We reccomend 6 amps with .02 peak detect for the entire pack.

Discharge the pack down at 30/35 amps after your run down to .90v per cell then leave them alone until the next time you use them. Before you go to charge them you should put them on a discharge tray such as the Integy 0-30 for 1-2 minutes and then start charging them.

For long term storage 3 weeks or more put 500 seconds of charge back into the pack.

Hope this helps.
Danny/SMC is offline   Reply With Quote
Old 10-11-2005, 02:08 PM   #518
Tech Master
 
racer-oZ's Avatar
R/C Tech Charter Subscriber
 
Join Date: May 2003
Location: Wichita
Posts: 1,485
Trader Rating: 2 (100%+)
Default

danny, thanks it does help, appreciate you guys posting all the tech advice on these threads!
racer-oZ is offline   Reply With Quote
Old 10-11-2005, 02:21 PM   #519
Tech Champion
 
Join Date: Jun 2004
Location: St Louis
Posts: 7,868
Trader Rating: 198 (100%+)
Default

Danny, What do you think of using a 030 tray after the run. I think that takes them all the way down. Then charging in say 300 seconds at 6 amps?
__________________
Please become an organ donor.
www.donatelife.net
Custom decals and Sno-Tee'z, T-Shirts by Sno Camel
dodgeguy is offline   Reply With Quote
Old 10-11-2005, 03:06 PM   #520
Company Representative
 
Danny/SMC's Avatar
 
Join Date: Oct 2001
Location: Elkton, VA
Posts: 3,097
Trader Rating: 2 (100%+)
Default

I wouldn't dicharge them past .90 per cell after a run this will remove runtime.

By traying for 1 minute before charging is equalizes the cells and doesn't hurt runtime.
Danny/SMC is offline   Reply With Quote
Old 10-11-2005, 04:09 PM   #521
Tech Master
 
beidle99's Avatar
 
Join Date: Jan 2005
Location: Woodbury, NJ
Posts: 1,929
Trader Rating: 9 (100%+)
Default

I just built up a new set of SMC 3800's and all I can say is WOW. After building up the pack and traying them down to .90 a cell and charging them at the 6 amps my Tekin charger rated the pack at 4140 Mah with a peak of 9.2+ volts, these are insane cells. Thank you Danny, I will be buying more!
beidle99 is offline   Reply With Quote
Old 10-11-2005, 04:27 PM   #522
Tech Elite
 
mike ivy's Avatar
 
Join Date: Feb 2002
Location: Comin at ya from a distant galaxy
Posts: 2,795
Trader Rating: 50 (100%+)
Default

Ray huang you have pm I have a question for ya
__________________
[-eXpress motorsports-] [-TQ Wire-]

1/12th Fo' Life!!! R.I.P Mike Reedy, R.I.P John Williams

[-Horsham RC-] [-Jackson RC-] [-RC Car World-] [ Black Out Free 2015 ]
mike ivy is offline   Reply With Quote
Old 10-11-2005, 04:44 PM   #523
Tech Master
 
koabich's Avatar
 
Join Date: Oct 2003
Location: Detroit Area
Posts: 1,359
Send a message via Yahoo to koabich
Default

Quote:
Originally Posted by beidle99
I just built up a new set of SMC 3800's and all I can say is WOW. After building up the pack and traying them down to .90 a cell and charging them at the 6 amps my Tekin charger rated the pack at 4140 Mah with a peak of 9.2+ volts, these are insane cells. Thank you Danny, I will be buying more!
Actually, the peak volts sounds kinda high. All my SMC IB 3800's peak at 8.95-9.05 and that's after 10-15 cycles. Check your peak detect and/or the solder joints.

Danny may have some more advice and maybe my packs have numbers way below the norm but the higher the peak voltage of the pack the greater the internal resistance of that pack is and/or signifies poor condition of the cells.

I would have said anything but my GP 3300's practice packs do not peak out that high.
koabich is offline   Reply With Quote
Old 10-11-2005, 04:50 PM   #524
Company Representative
 
Danny/SMC's Avatar
 
Join Date: Oct 2001
Location: Elkton, VA
Posts: 3,097
Trader Rating: 2 (100%+)
Default

Actually Peak Voltage is different on different chargers. Plus room temp and airflow will have an influence on it as well. As long as the PV is low on your Tekin compared to other packs then all is fine.
Danny/SMC is offline   Reply With Quote
Old 10-11-2005, 04:53 PM   #525
Tech Master
 
koabich's Avatar
 
Join Date: Oct 2003
Location: Detroit Area
Posts: 1,359
Send a message via Yahoo to koabich
Default

Quote:
Originally Posted by Danny/SMC
Actually Peak Voltage is different on different chargers. Plus room temp and airflow will have an influence on it as well. As long as the PV is low on your Tekin compared to other packs then all is fine.
Good point, I would have never thought about that or taken it into consideration.

Danny, thanks for all your input. I am sure I speak for everyone when I say it is great having someone of your standing in the industry take time out of your busy day to help us all and discuss these topics with us!
koabich is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Intellect 3800 LIPO vazzo Australian Racing 5 06-18-2008 12:59 AM
***SMC, Integy, Intellect, 3800-4200 battery sale*** RYAN BARNES R/C Items: For Sale/Trade 2 06-27-2007 12:05 PM
Intellect 3800 Battery Packs acsubie R/C Items: For Sale/Trade 11 02-15-2007 10:09 PM
FS: 4 Matched Intellect 3800 Battery Packs WogBoy Australia For Sale/Trade 5 09-24-2006 05:37 PM
LRP Pulsar 1 setting for Intellect Battery 3600, 3800 and 4200 rcmnx Electric On-Road 12 01-27-2006 05:05 PM



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 07:11 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