R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 02-07-2007, 08:49 PM   #151
Tech Lord
 
syndr0me's Avatar
 
Join Date: Dec 2004
Location: 5280 Raceway
Posts: 13,141
Trader Rating: 32 (100%+)
Default

Quote:
Originally Posted by CAlbrecht
all right buddy your at the Birds right? what the hell kind of batts are ya using Lipos are legal there?
I'm a spy! :-)

I'd have to use NiMH to race. I'd probably buy them from Hurricane or one of SMC's resellers like br00d/EA.
syndr0me is offline   Reply With Quote
Old 02-07-2007, 08:53 PM   #152
Tech Lord
 
UN4RACING's Avatar
 
Join Date: Oct 2006
Location: MODIFIED!
Posts: 13,140
Trader Rating: 22 (100%+)
Default

Lipos are rated nominal and untill there the only battery running they will be slower.
Sub-c for stock.
Lipo for mod.
Thats what I would run.
UN4RACING is offline   Reply With Quote
Old 02-07-2007, 08:55 PM   #153
Tech Master
 
jag88's Avatar
 
Join Date: Nov 2003
Posts: 1,075
Trader Rating: 1 (100%+)
Default

Danny, Novak has a new Smart Tray that holds the voltage of each cell at a set value. Does holding the voltage at say, .90v per cell hurt the pack ?
I'm only asking because I know that these batteries are sensitive to low voltages and was wondering what damage (if any) would occur if these cells are held at low voltages for a time.
I'm talking about IB4200s.
Thanks.
jag88 is offline   Reply With Quote
Old 02-07-2007, 08:56 PM   #154
Tech Lord
 
UN4RACING's Avatar
 
Join Date: Oct 2006
Location: MODIFIED!
Posts: 13,140
Trader Rating: 22 (100%+)
Default

Slower motors start arguements.
Mod motors end arguements!
UN4RACING is offline   Reply With Quote
Old 02-07-2007, 08:56 PM   #155
Tech Lord
 
syndr0me's Avatar
 
Join Date: Dec 2004
Location: 5280 Raceway
Posts: 13,141
Trader Rating: 32 (100%+)
Default

Quote:
Originally Posted by UN4RACING
Lipos are rated nominal and untill there the only battery running they will be slower.
Sub-c for stock.
Lipo for mod.
Thats what I would run.
Or LiPo in stock minus half a pound of lead. :-D
syndr0me is offline   Reply With Quote
Old 02-07-2007, 08:57 PM   #156
Company Representative
 
Danny/SMC's Avatar
 
Join Date: Oct 2001
Location: Elkton, VA
Posts: 3,097
Trader Rating: 2 (100%+)
Default

Never have I said that Lipos aren't good and they shouldn't be used. I just think they shouldn't by used in high end competition as it will make racing unfair for the average guy and more expensive.

If Lipo manufacturers start working on more power and performance I'm sure it will be a direct trade off to reliability and life expectancy. In fact I will ask the current manufacturer I have contacts with if they can make me a special Lipo pack that has higher voltage and lower IR and I don't care if it only runs for 5 charges or 100 charges and price isn't an issue. I bet they can do this and the pack will look just like other packs. That is what I'm trying to get across to people not that Lipos are no good and in fact they have great use in certain applications. If you club allows Lipos that is fine use them as long as the minimum weight is fair and respected. After all racing should be about driving and car tuning not about who has the deepest pockets.
Danny/SMC is offline   Reply With Quote
Old 02-07-2007, 08:59 PM   #157
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 jag88
Danny, Novak has a new Smart Tray that holds the voltage of each cell at a set value. Does holding the voltage at say, .90v per cell hurt the pack ?
I'm only asking because I know that these batteries are sensitive to low voltages and was wondering what damage (if any) would occur if these cells are held at low voltages for a time.
I'm talking about IB4200s.
Thanks.

I would not keep the cells at .90 for a long period of time. I normally tray my packs just prior to charging them.
Danny/SMC is offline   Reply With Quote
Old 02-07-2007, 08:59 PM   #158
Suspended
 
Join Date: Nov 2006
Location: Costa Mesa
Posts: 408
Default

Quote:
Originally Posted by Danny/SMC
Never have I said that Lipos aren't good and they shouldn't be used. I just think they shouldn't by used in high end competition as it will make racing unfair for the average guy and more expensive.

If Lipo manufacturers start working on more power and performance I'm sure it will be a direct trade off to reliability and life expectancy. In fact I will ask the current manufacturer I have contacts with if they can make me a special Lipo pack that has higher voltage and lower IR and I don't care if it only runs for 5 charges or 100 charges and price isn't an issue. I bet they can do this and the pack will look just like other packs. That is what I'm trying to get across to people not that Lipos are no good and in fact they have great use in certain applications. If you club allows Lipos that is fine use them as long as the minimum weight is fair and respected. After all racing should be about driving and car tuning not about who has the deepest pockets.

WORD.
CAlbrecht is offline   Reply With Quote
Old 02-07-2007, 09:02 PM   #159
Tech Lord
 
UN4RACING's Avatar
 
Join Date: Oct 2006
Location: MODIFIED!
Posts: 13,140
Trader Rating: 22 (100%+)
Default

I stored mine at about one third charge till race night then I balanced to just about zero then cool and charge. I wouldnt let them sit at .90 for long with out a charge. At least 25%.
UN4RACING is offline   Reply With Quote
Old 02-07-2007, 09:08 PM   #160
Tech Lord
 
syndr0me's Avatar
 
Join Date: Dec 2004
Location: 5280 Raceway
Posts: 13,141
Trader Rating: 32 (100%+)
Default

Quote:
Originally Posted by Danny/SMC
Never have I said that Lipos aren't good and they shouldn't be used. I just think they shouldn't by used in high end competition as it will make racing unfair for the average guy and more expensive.

If Lipo manufacturers start working on more power and performance I'm sure it will be a direct trade off to reliability and life expectancy. In fact I will ask the current manufacturer I have contacts with if they can make me a special Lipo pack that has higher voltage and lower IR and I don't care if it only runs for 5 charges or 100 charges and price isn't an issue. I bet they can do this and the pack will look just like other packs. That is what I'm trying to get across to people not that Lipos are no good and in fact they have great use in certain applications. If you club allows Lipos that is fine use them as long as the minimum weight is fair and respected. After all racing should be about driving and car tuning not about who has the deepest pockets.
You sound like an alright guy, Danny. :-)

What's the argument against using electronics to create battery parity? Can ESC's limit how much voltage gets through without generating too much heat? It's apparent no battery is going to create that kind of parity with its design, so if the ultimate goal is an even playing field, we may need to look elsewhere.
syndr0me is offline   Reply With Quote
Old 02-07-2007, 09:08 PM   #161
Tech Lord
 
UN4RACING's Avatar
 
Join Date: Oct 2006
Location: MODIFIED!
Posts: 13,140
Trader Rating: 22 (100%+)
Default

Danny I Personally hope the # game never comes into play with lipos.
I know it will, but I think thats just going to put us right back to where we are and thats, this pack only last a week and hes got more volts and he out bought me and so on. I say run what you want. And how did lipo get into a sub-c thread. Now I'm rambling. And thanks I was about to tell jag the same thing.
UN4RACING is offline   Reply With Quote
Old 02-07-2007, 09:16 PM   #162
Tech Lord
 
UN4RACING's Avatar
 
Join Date: Oct 2006
Location: MODIFIED!
Posts: 13,140
Trader Rating: 22 (100%+)
Default

The lead is the only thing that is fair in any slow motor race.
UN4RACING is offline   Reply With Quote
Old 02-07-2007, 09:30 PM   #163
Tech Lord
 
syndr0me's Avatar
 
Join Date: Dec 2004
Location: 5280 Raceway
Posts: 13,141
Trader Rating: 32 (100%+)
Default

Quote:
Originally Posted by UN4RACING
The lead is the only thing that is fair in any slow motor race.
Word.

http://www.youtube.com/watch?v=TjNNxnKVEpQ
syndr0me is offline   Reply With Quote
Old 02-07-2007, 09:56 PM   #164
Tech Fanatic
 
muahdib4's Avatar
 
Join Date: Nov 2006
Location: Raymore
Posts: 863
Send a message via Yahoo to muahdib4
Default

Quote:
Originally Posted by Danny/SMC
Never have I said that Lipos aren't good and they shouldn't be used. I just think they shouldn't by used in high end competition as it will make racing unfair for the average guy and more expensive.

If Lipo manufacturers start working on more power and performance I'm sure it will be a direct trade off to reliability and life expectancy. In fact I will ask the current manufacturer I have contacts with if they can make me a special Lipo pack that has higher voltage and lower IR and I don't care if it only runs for 5 charges or 100 charges and price isn't an issue. I bet they can do this and the pack will look just like other packs. That is what I'm trying to get across to people not that Lipos are no good and in fact they have great use in certain applications. If you club allows Lipos that is fine use them as long as the minimum weight is fair and respected. After all racing should be about driving and car tuning not about who has the deepest pockets.
Now, I know you know your business but how does not allowing something in HIGH END competition help the AVERAGE GUY? The AVERAGE GUY doesn't go to HIGH END competition. Very few do in fact. LiPo helps the AVERAGE GUY by allowing him to worry more about car set up, not buying new batteries every couple months and spending money on other more needed parts. I think I understand where you're coming from but I just don't agree with the statement as written. Most HIGH END competition guys have battery sponsors so they don't really care one way or the other (not all, I know but MANY).
__________________
KCRC - Kansas City Remote Crawlers
Team Chucklenuts Racing
Midwest R/C Rally Confederation
KC/RC Drift Movement
muahdib4 is offline   Reply With Quote
Old 02-08-2007, 03:37 AM   #165
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

Quote:
Originally Posted by muahdib4
Most HIGH END competition guys have battery sponsors so they don't really care one way or the other (not all, I know but MANY).
ditto
i sort of feel the same over here aswell ,you sort of feel the rules are made for them & them only & they dictate the hobby to which way it goes

And the AVERAGE racer has to to follow suit or start using illegal stuff compared to what`s on the list on the rspective racing body
which is whats happening really
or am i the only one to see it

re;;4 cell
UK have a class for it & about 3-4 racers have entered it
hell even clubs say if not enough racers to fill heat we won`t run it

@Danny
re;;heat shrink on excisting batts
i just know they do ,this is why the batts are being sorted by WEIGHT per cell aswell as dimensions in EFRA & BRCA
compare on the List a couple of post`s up & look at the figures compared with GP4300 & GP4600 nigh on the same fig`s

Even IB do it


oh man this thread has derailed for sure now

not saying anymore about this
sorry to rant
__________________
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
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Much More, GFX, 4600 IB 1.25+ L.Fairtrace R/C Items: For Sale/Trade 11 10-19-2008 06:32 PM
LRP/Nosram 4600 Fat Cobra 4600 Big Mama Celles sbs Radio and Electronics 0 05-22-2008 05:02 AM
EP 4600 fred kellner R/C Items: For Sale/Trade 2 01-14-2008 09:07 AM
4600 in t4? Ultraspeed84 Electric Off-Road 6 11-16-2007 06:27 PM
EP 4600 raceGEEK Radio and Electronics 3 10-22-2007 06:49 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 08:57 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