R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 07-03-2005, 12:28 AM   #106
Tech Master
 
Tempest2000's Avatar
 
Join Date: Aug 2003
Location: Smyrna, TN
Posts: 1,590
Trader Rating: 21 (100%+)
Default

GUO,

I recommend dead shorting for stock and 19 touring for sure.
I use the same dead shorted packs in mod offroad and they still have plenty left 180-200 seconds at 30 amps left even being deadshorted.

However, for mod touring or mod 12th scale I would recommend discharging the cell to .90/cell. i.e. 5.4 volts for a 6 cell pack and storing them. Then traying them for 10-15 min. and then put them on charge on race day.
If you want to store your packs for weeks at a time then putting a 300 or 400 second charge back into them seems to help keep from losing much run time while its not being run for longer periods of time. When you are ready to use them again tray them and let them stay in the tray until they cool and then charge them like normal.

If you look back I believe danny also addressed the charge/discharge methods a few pages back as well.

Michael
Tempest2000 is offline   Reply With Quote
Old 07-03-2005, 01:48 AM   #107
Tech Master
 
Guo Chean's Avatar
 
Join Date: Jan 2005
Location: Indiana, PA15701
Posts: 1,492
Trader Rating: 4 (100%+)
Send a message via ICQ to Guo Chean Send a message via Yahoo to Guo Chean
Default

Quote:
Originally Posted by Tempest2000
GUO,

I recommend dead shorting for stock and 19 touring for sure.
I use the same dead shorted packs in mod offroad and they still have plenty left 180-200 seconds at 30 amps left even being deadshorted.

However, for mod touring or mod 12th scale I would recommend discharging the cell to .90/cell. i.e. 5.4 volts for a 6 cell pack and storing them. Then traying them for 10-15 min. and then put them on charge on race day.
If you want to store your packs for weeks at a time then putting a 300 or 400 second charge back into them seems to help keep from losing much run time while its not being run for longer periods of time. When you are ready to use them again tray them and let them stay in the tray until they cool and then charge them like normal.

If you look back I believe danny also addressed the charge/discharge methods a few pages back as well.

Michael
may i know for straight tray them 10-15 min on zero equalizer let them until zero volt each cell or let it discharge until 0.9volt per cell them put them into zero equalizer just for 15 min? thanks
__________________
[FONT=Comic Sans MS][SIZE=3][COLOR=red]|HotBodies|HPI|Full Throttle Motorsports|KO PROPO|DSM|Nosram|JACO|MUCH MORE RACING|Schacht Design Works|[/COLOR][/SIZE][/FONT]
Guo Chean is offline   Reply With Quote
Old 07-03-2005, 08:09 AM   #108
Tech Apprentice
 
LazyBug's Avatar
 
Join Date: Jun 2005
Location: Hawaii
Posts: 55
Default

Everybody, Just got the comment from IB distributor here.

1. Bring down to 0V of each cell may see increase in performance, however, "Keeping" the IB cell in 0V may also cause unrecoverable damage to the cell. So you should avoid 0V the cells for too long, say no more than 1 hour. IB offically not suggest 0V the cells.

2. You MUST put charge inside the cells for storage, say 1000 sec 6A charge. I have tried to keep cells without charge for 1 month, average voltage has no drop but runtime drop by 50-60 sec
LazyBug is offline   Reply With Quote
Old 07-03-2005, 09:48 AM   #109
Tech Elite
 
POOKYT's Avatar
 
Join Date: Oct 2002
Location: Cabot, AR
Posts: 3,584
Default

Guys--What method,device, or both are you guys using to dead short the batts?

Brant
__________________
EA Motorsports--B-Main Motorsports--Blizzard Concepts--Loose Nuts Racing--BigDog Graphics

My Carbon Footprint is Larger than Yours! :p
POOKYT is offline   Reply With Quote
Old 07-03-2005, 09:58 AM   #110
Tech Master
 
Tempest2000's Avatar
 
Join Date: Aug 2003
Location: Smyrna, TN
Posts: 1,590
Trader Rating: 21 (100%+)
Default

I use the integy 30 tray let it go down to 0 and cool for a few minutes and then dead short the pack with a piece of solder across the pos. and neg. bar.

Lazybug... IB's when they first came out it's true they did not like deadshorting. The latest batches are like the 3rd or 4th revision.

These do like deadshorting (IB 3800). I've been racing with cells deadshorted for the last month or so and they keep getting stronger. I even use them twice a day sometimes with no ill effects. The packs just seem to get faster.

My team drivers are also using this method and they are seeing the same results (IB 3800). We finished 1st, 2nd, and 3rd in mod truck offroad, and 1st and 2nd in mod buggy with them last night. We also had 2 stock truck guys in the top 3 I believe. They won stock touring at a fairly big race in AL last weekend as well.

Michael Skeen
Thunder RC
Tempest2000 is offline   Reply With Quote
Old 07-03-2005, 12:24 PM   #111
Tech Master
 
Guo Chean's Avatar
 
Join Date: Jan 2005
Location: Indiana, PA15701
Posts: 1,492
Trader Rating: 4 (100%+)
Send a message via ICQ to Guo Chean Send a message via Yahoo to Guo Chean
Default

Quote:
Originally Posted by Tempest2000
I use the integy 30 tray let it go down to 0 and cool for a few minutes and then dead short the pack with a piece of solder across the pos. and neg. bar.

Lazybug... IB's when they first came out it's true they did not like deadshorting. The latest batches are like the 3rd or 4th revision.

These do like deadshorting (IB 3800). I've been racing with cells deadshorted for the last month or so and they keep getting stronger. I even use them twice a day sometimes with no ill effects. The packs just seem to get faster.

My team drivers are also using this method and they are seeing the same results (IB 3800). We finished 1st, 2nd, and 3rd in mod truck offroad, and 1st and 2nd in mod buggy with them last night. We also had 2 stock truck guys in the top 3 I believe. They won stock touring at a fairly big race in AL last weekend as well.

Michael Skeen
Thunder RC
hey michael, do you have any good charging method for that cell?
__________________
[FONT=Comic Sans MS][SIZE=3][COLOR=red]|HotBodies|HPI|Full Throttle Motorsports|KO PROPO|DSM|Nosram|JACO|MUCH MORE RACING|Schacht Design Works|[/COLOR][/SIZE][/FONT]
Guo Chean is offline   Reply With Quote
Old 07-03-2005, 02:09 PM   #112
Tech Master
 
Tempest2000's Avatar
 
Join Date: Aug 2003
Location: Smyrna, TN
Posts: 1,590
Trader Rating: 21 (100%+)
Default

I use a standard linear charge at 6 amps with a .03 cut off on most chargers.
I like the batteries to cut off 120-130 F or so.
I have some people that use step charging with much more chargers. Let me know and if you need that info I'll get it to you.

Michael
Tempest2000 is offline   Reply With Quote
Old 07-03-2005, 07:41 PM   #113
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 Tempest2000
I use a standard linear charge at 6 amps with a .03 cut off on most chargers.
I like the batteries to cut off 120-130 F or so.
I have some people that use step charging with much more chargers. Let me know and if you need that info I'll get it to you.

Michael

I am experimenting with the step charging. I just dont see any benefits in stock, but I think in modified or especially 19t it might have a signifcant advantage. By significant I mean the regular guy like us could go faster

For sure the packs come off about 10F degrees cooler.

Also-on my GFX -I might linear charge at 0.02. if the cells deadshorted-youve got to set the long lockout or it Will false peak.

Ray
rayhuang is offline   Reply With Quote
Old 07-05-2005, 08:15 PM   #114
Tech Fanatic
 
Join Date: Aug 2004
Location: Northern, KY
Posts: 859
Trader Rating: 4 (100%+)
Default

Ray-

Who's 3800 packs are you running?

Also, what are all the companies currenly offering 3800?

I see Pro Match, Powerpush, and EA Motorsports shortly and of course SMC. Just wondering who else is.

Thanks,

Mike T
__________________
visit Hurricane Motorsports: www.teamhurricane.net | RCAmerica www.RCAmerica.com | HUDY | JACO
bigdog xxx-s is offline   Reply With Quote
Old 07-05-2005, 09:00 PM   #115
Tech Champion
 
cannon's Avatar
 
Join Date: Sep 2003
Location: A total distraction
Posts: 7,266
Trader Rating: 35 (100%+)
Default

Big dog - You could always look overseas for matchers. I am matching Intellect cells in Australia and have since they first hit the market. I have been matching all brands for nearly 15 years.

You guys should be looking at the exchange rate of the American dollar. I could sell you top of the range IB3800 cells for $US44 plus postage. This easily compares with the prices that you pay at home ($US65 ?)

Now all I need is an American distributor for the cells
cannon is offline   Reply With Quote
Old 07-05-2005, 09:10 PM   #116
Tech Master
 
Guo Chean's Avatar
 
Join Date: Jan 2005
Location: Indiana, PA15701
Posts: 1,492
Trader Rating: 4 (100%+)
Send a message via ICQ to Guo Chean Send a message via Yahoo to Guo Chean
Default

Quote:
Originally Posted by cannon
Big dog - You could always look overseas for matchers. I am matching Intellect cells in Australia and have since they first hit the market. I have been matching all brands for nearly 15 years.

You guys should be looking at the exchange rate of the American dollar. I could sell you top of the range IB3800 cells for $US44 plus postage. This easily compares with the prices that you pay at home ($US65 ?)

Now all I need is an American distributor for the cells
is that 44USD shipped?
__________________
[FONT=Comic Sans MS][SIZE=3][COLOR=red]|HotBodies|HPI|Full Throttle Motorsports|KO PROPO|DSM|Nosram|JACO|MUCH MORE RACING|Schacht Design Works|[/COLOR][/SIZE][/FONT]
Guo Chean is offline   Reply With Quote
Old 07-05-2005, 09:23 PM   #117
Tech Addict
 
josh69162's Avatar
 
Join Date: Jun 2004
Location: houston
Posts: 641
Trader Rating: 2 (100%+)
Send a message via AIM to josh69162
Default

Quote:
Originally Posted by cannon
I could sell you top of the range IB3800 cells for $US44 plus postage.
But when you say "top of the range," what kind of numbers are we looking at? High 1.18s, possibly?
-Josh
josh69162 is offline   Reply With Quote
Old 07-05-2005, 09:27 PM   #118
Tech Master
 
Join Date: Aug 2001
Posts: 1,152
Default

Hi ppl...

I was considering the IB3800 cells.But my LHS said that the cells has some problem.It overheats easily during runs and loose their capacity and punch dramatically. I don't know whether its my climate here.Living near the equator must be really hot and maybe effects the cells performance??

Anyone any idea??

Thanks.
Ben.C is offline   Reply With Quote
Old 07-05-2005, 09:37 PM   #119
Tech Regular
 
Join Date: Aug 2001
Posts: 318
Default

Quote:
Originally Posted by Ben.C
Hi ppl...

I was considering the IB3800 cells.But my LHS said that the cells has some problem.It overheats easily during runs and loose their capacity and punch dramatically. I don't know whether its my climate here.Living near the equator must be really hot and maybe effects the cells performance??

Anyone any idea??

Thanks.
Hi Ben,

They are fine after someone has run the cycles and matched them for u.If not i recomend that u wait for the newer batch. The main issue is leakage and that happens only on the first few cycles. After the first few cycles they will be fine.

Give me a buzz if u need more info. Mor Mor here.

Cheers
viper1 is offline   Reply With Quote
Old 07-05-2005, 09:55 PM   #120
Tech Master
 
Join Date: Aug 2001
Posts: 1,152
Default

Hey... Mor Mor...Thanks for the info...

Too bad no one matches them here.Kum Yew used to sale them unmatched but zapped cells,which according to Winnie its not holding up too well...
Ben.C 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 06:05 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