R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric On-Road > Team and Company Discussions

Reply
 
Thread Tools Search this Thread
Old 01-12-2004, 09:07 AM   #481
Tech Adept
 
Join Date: Oct 2003
Posts: 167
Default

overdrivedgn is offline   Reply With Quote
Old 01-12-2004, 09:37 AM   #482
Tech Fanatic
 
Chill Will's Avatar
 
Join Date: Oct 2003
Location: The Dirty South
Posts: 804
Default

I totally agree
Chill Will is offline   Reply With Quote
Old 01-12-2004, 02:17 PM   #483
Tech Addict
 
Join Date: Mar 2003
Location: Long Island, New York
Posts: 716
Default

Ok, but I thought increasing the cutoff would make it peak even sooner and its already only registering 3100mah.
AE Racer is offline   Reply With Quote
Old 01-12-2004, 02:30 PM   #484
Tech Elite
 
John Fontaine's Avatar
R/C Tech Charter Subscriber
 
Join Date: Mar 2003
Location: SouthEast PA
Posts: 2,699
Trader Rating: 2 (100%+)
Send a message via AIM to John Fontaine
Default

Increasing the peak detect will make the pack peak later. .03 v versus .05 volts not the other way around Say your peak voltage is 9.0 volts, it will shut off at 8.97 with .03 and 8.95 at .05. The .05 will increase the amount of charge you put into the pack plus bring the pack up to racing temps.
__________________
Xray and Serpent....very dusty!
John Fontaine is offline   Reply With Quote
Old 01-12-2004, 03:05 PM   #485
Tech Master
 
jaysimpson's Avatar
R/C Tech Charter Subscriber
 
Join Date: Oct 2001
Posts: 1,869
Trader Rating: 9 (100%+)
Send a message via AIM to jaysimpson
Default


PS Boosting the charge isn't gonna solve your problem. The only option is the drop back(or cut off) voltage setting. Boosting the amps you are charging at will only give a slight increase in voltage and decrease the life of the cells.
__________________
Kalgard Racing
Banzai Motorsports
ProMatch Racing
A-Train Racing
Warehouse Raceway
jaysimpson is offline   Reply With Quote
Old 01-12-2004, 03:46 PM   #486
Tech Fanatic
 
Chill Will's Avatar
 
Join Date: Oct 2003
Location: The Dirty South
Posts: 804
Default

Chill Will is offline   Reply With Quote
Old 01-12-2004, 04:08 PM   #487
Tech Addict
 
Join Date: Mar 2003
Location: Long Island, New York
Posts: 716
Default

Quote:
Originally posted by John Fontaine
Increasing the peak detect will make the pack peak later. .03 v versus .05 volts not the other way around Say your peak voltage is 9.0 volts, it will shut off at 8.97 with .03 and 8.95 at .05. The .05 will increase the amount of charge you put into the pack plus bring the pack up to racing temps.
If it will shut off at a lower voltage then how is it putting more charge into the battery? Bear with me, Im a nitro guy and this is my first electric experience. Is it that the voltage begins to drop as the pack reaches its peak? Is there a signifigant diffrence in the peak detect settings of the older GP3300s and the new short button GP3300s?

Quote:
PS Boosting the charge isn't gonna solve your problem. The only option is the drop back(or cut off) voltage setting. Boosting the amps you are charging at will only give a slight increase in voltage and decrease the life of the cells.
I wasnt expecting it to solve m problem, just wondering if it works well. I havent and wont use it now that I know it will decrease life.

Thanks for the help guys
AE Racer is offline   Reply With Quote
Old 01-12-2004, 05:26 PM   #488
Tech Fanatic
 
Chill Will's Avatar
 
Join Date: Oct 2003
Location: The Dirty South
Posts: 804
Default

Oh my at the confusion..... Set your charger to peak at the higher voltage.

I think he was trying to say if you have your setting at .03 and the pack peaks at 8.97......... set it to .05 and it will peak at 9.00 or higher. .05 will hold the peak longer than .03..... but keep a eye on the pack till you are sure it won't over charge your packs at that setting.
Chill Will is offline   Reply With Quote
Old 01-12-2004, 05:44 PM   #489
Tech Elite
 
jjmudd's Avatar
 
Join Date: Dec 2001
Location: Edmonton, Canada
Posts: 2,396
Trader Rating: 5 (100%+)
Default

AE Racer,
Still kinda confusing. My understanding is this...When a pack has reached it's peak the voltage starts to drop off. With a peak detect set at .03, when the packs voltage drops that much (.03) the charger shuts off. Therefore, with a peak detect set at .05 the charger continues to charge until the pack has dropped .05 which takes longer than if the pack only dropped to .03 thus putting more charge into the pack which in turn will increase the heat in the pack. Ideally you want your packs to peak at 140 degrees but many factors will determine the cut off / peak detect voltage that you set your charger to. Where I race, the indoor facility that we use in the winter is exteamly cold, so I need to set my cut off a little higher than if I raced where the ambient temperature was 80 or better. Hope that helps.
jjmudd is offline   Reply With Quote
Old 01-12-2004, 06:00 PM   #490
Tech Master
 
jaysimpson's Avatar
R/C Tech Charter Subscriber
 
Join Date: Oct 2001
Posts: 1,869
Trader Rating: 9 (100%+)
Send a message via AIM to jaysimpson
Default

That is correct jjmudd. The .5 cutoff holds the charge longer because it is waiting to see the voltage fall back more than with the .03 setting.

AE: Don't sweat it dude,we don't mind helping you out at all. That's what we have this for.
__________________
Kalgard Racing
Banzai Motorsports
ProMatch Racing
A-Train Racing
Warehouse Raceway
jaysimpson is offline   Reply With Quote
Old 01-12-2004, 09:25 PM   #491
Tech Addict
 
Join Date: Mar 2003
Location: Long Island, New York
Posts: 716
Default

Is it ok to run a pack right after you take it off the charger at peak temp? Or should I let it cool down first? It seems like it would get dangerously hot while running if I ran it right off the charger.
AE Racer is offline   Reply With Quote
Old 01-12-2004, 10:21 PM   #492
Tech Elite
 
jjmudd's Avatar
 
Join Date: Dec 2001
Location: Edmonton, Canada
Posts: 2,396
Trader Rating: 5 (100%+)
Default

It is always best to run the pack as soon as it peaks. Ideal situation is: battery peaks, gets put in car, car on track and race. If the pack peaks before you need to race, keep it in it's box or other storage area so that it can stay warm.
jjmudd is offline   Reply With Quote
Old 01-12-2004, 10:55 PM   #493
Tech Regular
 
PMRGirl's Avatar
 
Join Date: Nov 2003
Posts: 373
Talking

This one I do know the answer to......ideally run the pack right after it peaks (made me feel good to know the answer )
PMRGirl is offline   Reply With Quote
Old 01-12-2004, 10:56 PM   #494
Tech Regular
 
PMRGirl's Avatar
 
Join Date: Nov 2003
Posts: 373
Talking

Oh yeah thanks guys....I have learned a lot from this too
PMRGirl is offline   Reply With Quote
Old 01-12-2004, 11:22 PM   #495
Tech Addict
 
Join Date: Mar 2003
Location: Long Island, New York
Posts: 716
Default

Quote:
Originally posted by jjmudd
It is always best to run the pack as soon as it peaks. Ideal situation is: battery peaks, gets put in car, car on track and race. If the pack peaks before you need to race, keep it in it's box or other storage area so that it can stay warm.
Ok, leets say the pack peaks but I still have 20 minutes until the race, would it be ok to repeak the pack after 10-15minutes? or would that be damaging to the cells?

Thanks for the help everyone.
AE Racer is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Pro-Match Batteries Goingfast R/C Items: For Sale/Trade 8 03-02-2008 12:00 PM
Pro Match Batteries............. RH Customs Electric Off-Road 8 01-17-2006 10:19 AM
Pro Match Batteries dmayhew25 R/C Items: For Sale/Trade 2 09-26-2005 05:49 PM
FS: 4 Pro Match Batteries L.Fairtrace R/C Items: For Sale/Trade 11 11-10-2004 06:41 PM
How do you zap and match batteries Yokomo Aust Electric On-Road 24 05-10-2004 12:41 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 11:48 PM.


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