R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 08-15-2006, 09:40 PM   #31
Tech Master
 
Join Date: Aug 2001
Posts: 1,152
Default

Holy Crap...!

Got to add Kevlar Vest and Helmet as stardard race eequipment soon...
Ben.C is offline   Reply With Quote
Old 08-15-2006, 09:45 PM   #32
Tech Adept
 
bigair78's Avatar
 
Join Date: Jun 2006
Location: Dyersburg, TN
Posts: 185
Default

Holy crap!!! Did this happen at the Henderson TN race this weekend. I came sunday and watched the main. I didn't realize I was in danger!!!
bigair78 is offline   Reply With Quote
Old 08-15-2006, 10:55 PM   #33
Tech Regular
 
Join Date: Sep 2004
Location: Las Vegas, NV
Posts: 435
Trader Rating: 1 (100%+)
Send a message via AIM to minijosh Send a message via Yahoo to minijosh
Default

I didn't know they made round lipos now. Is it just me or does it look like a normal cell? Good thing it missed his cheap radio lol.
__________________
http://rccarparts.biz/

Joshua T
minijosh is offline   Reply With Quote
Old 08-16-2006, 09:08 AM   #34
Tech Addict
 
gacjr0's Avatar
 
Join Date: Dec 2002
Posts: 725
Trader Rating: 15 (100%+)
Default

NIMH should be banned from use, as they pose a imminent threat to our safety. Intelligence sources have reported meetings between agents of NIMH and Iran, Iran has long been trying to acquire WBD's and Iran has decided not to comply with ROAR's inspectors to show the world that they have no WBD's. So I have gathered a international coalition of the willing to deal with this threat. We cannot forget the events of the Carpet oval nats. There is still time for Iran to do the right thing and turn over its weapons of battery destruction, otherwise, coalition forces stand ready to invade Iran on Tuesday. God Bless America.
__________________
-Dangerous with power tools-
gacjr0 is offline   Reply With Quote
Old 08-16-2006, 09:23 AM   #35
Tech Master
 
Join Date: Jan 2006
Posts: 1,135
Trader Rating: 35 (100%+)
Send a message via AIM to Sean R
Default

They should ban idiots first.
Sean R is offline   Reply With Quote
Old 08-16-2006, 09:33 AM   #36
Tech Master
 
burbs's Avatar
 
Join Date: Feb 2004
Location: wisconsin
Posts: 1,152
Trader Rating: 1 (100%+)
Send a message via AIM to burbs Send a message via Yahoo to burbs
Default

Quote:
Originally Posted by PitCrew
I am in dis belief of this.

What did the cell push against to get itself into the wall.
For every action there is an equal and opposite reaction.

Also, I charge at 10 amps very frequently, not saying its a good thing to do. I NEVER let the cells peak at that current. Only when I am late for a race and trying to get some Mah in them.

I have heard of cells blowing up though, so I know it can happen, and I understand it is VERY loud!!

The NEW M80!!
Its a red cell IP 3800...you can see the matching lable on the cell, and the red outer ring..

It is very common in oval racing to charge at 10 amps or higher at nation events for the mains.. The added punch up front helps alot if the car is good..

I have seen John foister owner of BSR , have two turbo's hooked up at 12 amps each to charge his packs.. ask anyone he has massive amounts of rip. If it is done properly, it will have great results.. as EA said attention is key...

If the peak detect was set at .02 or .03 like it should have been it wouldnt have done it..

maybe it was in a groove of the rack, and when it blew it rested against the rack.. I wasnt there, but a few of my friends were, they said it was nuts..

I wonder if the damage is covered under his homeowners insurance,,

Last edited by burbs; 08-16-2006 at 11:07 AM.
burbs is offline   Reply With Quote
Old 08-16-2006, 09:38 AM   #37
Tech Elite
 
MR JOLLY's Avatar
 
Join Date: Mar 2004
Location: MOOD;; feeling good not racing ,saving shed loads of money,lovely Tan i have aswell
Posts: 4,762
Default

carpetwars over @ winter time last year
i know of some racers charging @ 8a-9a on there GP37`s in 27t

so even the experienced racers who should know better do it (silly Bunt`s)
__________________
EAMotorsports;;BRCA 27t National 2007 Champ's
FKO4,AdyB fan club !!
saying of the month;;The Past is History, the Future is a Mystery, this Moment is a Gift- that's why it's called The Present.
MR JOLLY is offline   Reply With Quote
Old 08-16-2006, 11:23 AM   #38
Tech Adept
 
Join Date: Jan 2005
Location: Near Cambridge, UK
Posts: 180
Default

Apparently some people were charging at 12A and peaking at 24A at the LRP masters touring car race a couple of years ago. They were only using their packs 2 or 3 times before binning them
ralph_c is offline   Reply With Quote
Old 08-16-2006, 01:56 PM   #39
SPC
Registered User
 
Join Date: Dec 2005
Posts: 45
Default

Quote:
Originally Posted by EAMotorsports
One thing a lot of you guys are missing is that IF someone would have been sitting there it would NOT HAVE HAPPENED!! They would have heard the cell Vent or smelled it getting hot and been able to take it OFF THE CHARGER and prevent this!!

This is why all battery chargers, batteries, etc come with a warning... DO NOT LEAVE THIS UNATTENDED WHILE IN USE!!

EA
100% correct! Best advice I've seen all day.
10-Amp charge? What was the person thinking? He's very lucky he didn't kill someone!
SPC is offline   Reply With Quote
Old 08-16-2006, 02:14 PM   #40
Tech Regular
 
Join Date: Jun 2002
Location: Arizona
Posts: 466
Send a message via AIM to kyle478
Default

if your not charging at 10amps and over in a spec class at a national event your going to be slow.



Late,

Kyle Bergstrom
kyle478 is offline   Reply With Quote
Old 08-16-2006, 02:55 PM   #41
Tech Adept
 
tonyp126's Avatar
 
Join Date: Dec 2002
Location: Orlando, FL
Posts: 224
Send a message via AIM to tonyp126 Send a message via Yahoo to tonyp126
Default

I call bull$hit. No way a battery is going to accelerate like that, perfectly straight into the middle of that wood strip. They explode like a firecracker, I've seen them. Nice try though.
__________________
Team Schumacher EA Motorsports Team Trinity/TRC TQ Cells P-DUB HDimaging.net
tonyp126 is offline   Reply With Quote
Old 08-16-2006, 03:00 PM   #42
Tech Elite
 
PitCrew's Avatar
 
Join Date: Sep 2003
Location: Seattle Indoor Raceway
Posts: 2,129
Default

Quote:
Originally Posted by burbs
Its a red cell IP 3800...you can see the matching lable on the cell, and the red outer ring..

It is very common in oval racing to charge at 10 amps or higher at nation events for the mains.. The added punch up front helps alot if the car is good..

I have seen John foister owner of BSR , have two turbo's hooked up at 12 amps each to charge his packs.. ask anyone he has massive amounts of rip. If it is done properly, it will have great results.. as EA said attention is key...

If the peak detect was set at .02 or .03 like it should have been it wouldnt have done it..

maybe it was in a groove of the rack, and when it blew it rested against the rack.. I wasnt there, but a few of my friends were, they said it was nuts..

I wonder if the damage is covered under his homeowners insurance,,
Like I said, I have heard of folks blowing up packs around here. THey said it was VERY loud.

But, as others have stated, I regularly charge at 10 amps. Usually when I am behind on the charge for it to finish in time for a race. But I NEVER EVER let the pack reach a peak at this amperage. If I find I have made up the charge or there was a delay, I always reduce the amperage back down to 6 for it to peak at.

I honestly don't think there is any harm in charging at high amp rates as long as the cells don't PEAK at that charge rate. I have been doing this to IB3800 for months. The packs are starting to fall off just a bit, but I don't think the degredation has been noticable accellerated by high amp charging. I am not recommending to ANY ONE to charge at high amp rates. But if you know what you are doing, and are closely monitoring the charge and temp, I believe high amp charge rates can be very beneficial to your racing.

I have also always noticed a considerable increase in rip when charged at 10 -vs- 6 amps.
For mod, though, I charge at 5-6. I think it gets more into the pack, and since you are having a bit less rip, the runtime is higher since you are putting out basically less power per given amount of time.
my $.02
PitCrew is offline   Reply With Quote
Old 08-16-2006, 03:04 PM   #43
Team EAM
 
EAMotorsports's Avatar
 
Join Date: Dec 2001
Location: Murfreesboro, TN
Posts: 9,158
Trader Rating: 79 (100%+)
Send a message via AIM to EAMotorsports
Default

Quote:
Originally Posted by kyle478
if your not charging at 10amps and over in a spec class at a national event your going to be slow.



Late,

Kyle Bergstrom
BS....Charging higher does nothing but create more heat with little effects on have the battery runs. It might be a tick better up front but fall off a LOT more the last minute or so. No advantage.

EA
__________________
Contact Us
Team EAM, Our Facebook
Team EAM | Xray | RCAmerica | Hudy | APEX Raceway and Hobbies | RC Mission | Killer Concepts | AVID | Hobbywing.
EAMotorsports is offline   Reply With Quote
Old 08-16-2006, 03:05 PM   #44
Team EAM
 
EAMotorsports's Avatar
 
Join Date: Dec 2001
Location: Murfreesboro, TN
Posts: 9,158
Trader Rating: 79 (100%+)
Send a message via AIM to EAMotorsports
Default

Quote:
Originally Posted by tonyp126
I call bull$hit. No way a battery is going to accelerate like that, perfectly straight into the middle of that wood strip. They explode like a firecracker, I've seen them. Nice try though.
Hey Tony,

I was there...I saw the battery. Thats how it ended up. There are probably 30 guys that got pics of it. No BS'ing of those pics!

EA
__________________
Contact Us
Team EAM, Our Facebook
Team EAM | Xray | RCAmerica | Hudy | APEX Raceway and Hobbies | RC Mission | Killer Concepts | AVID | Hobbywing.
EAMotorsports is offline   Reply With Quote
Old 08-16-2006, 03:07 PM   #45
Tech Addict
 
Tubaboy's Avatar
 
Join Date: Jun 2005
Location: Riverton, WY
Posts: 582
Trader Rating: 9 (100%+)
Default

Quote:
Originally Posted by tonyp126
I call bull$hit. No way a battery is going to accelerate like that, perfectly straight into the middle of that wood strip. They explode like a firecracker, I've seen them. Nice try though.
You lose on the B$ call. Verified by several drivers attending the event, notably drivers and people that I tend to trust on the site. EA, ts, etc. I highly doubt this was a photochopped image.

Paul
__________________
www.wyomingrc.com | www.wyomingmodelerspark.com
Tubaboy is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
battery pack explosion joe of loath Chat Lounge 14 06-02-2007 04:53 PM
what fuel runs the coolest? corvettecrazy Electric Off-Road 6 10-12-2003 09:21 AM
coolest looking alloy? keithander Electric On-Road 54 07-09-2003 04:31 PM
The coolest TC3 ever, LOOK! stefan R/C Items: For Sale/Trade 17 05-07-2002 01:11 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 07:29 AM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net