R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro Off-Road

Reply
 
Thread Tools Search this Thread
Old 10-08-2008, 08:02 PM   #1
Tech Elite
 
MadRacer's Avatar
R/C Tech Elite Subscriber
 
Join Date: Aug 2005
Location: Australia
Posts: 2,351
Trader Rating: 29 (100%+)
Default Li PO's in starter Boxes ??????

Has anyone tried it? If so do you need to use a voltage cut off regulator??

I have 2 starter boxes and play with electric now and again.

My Ep 4200 packs are not holding up well when used in my buggies due to the little use. I do have a Li Po charger so thats not a problem.

My concerns are i might pull the voltage down to low without a voltage regulator.

Also can starter boxes handle 14.8 v ?? I would of thought it wont be a problem. My starter box uses a 750 motor.

Thanks for any advice....
__________________
Boondal vintage Tamiya's

https://www.youtube.com/watch?v=vtmCddStNyM
MadRacer is offline   Reply With Quote
Old 10-08-2008, 08:46 PM   #2
Tech Regular
 
Join Date: Jan 2005
Location: San Diego
Posts: 371
Trader Rating: 45 (100%+)
Default

I have the Ofna truggy start box that has two motors in it and I am running two 4s 3750 packs in paralell for a total of 4s 7500mah. I can tell you that it lasts forever. I usually rcharge the packs when I am done using them for the day as I don't want to take them down too low myself and so far the most I have put back after a days use is about 1,000mah. I am using these packs bcause I already had them. The starter seems to be handling them just fine and I picked up the starter used to begn with. Plus it has a ton of power, it will start anything with ease. It's also very light.
jakeg1999 is offline   Reply With Quote
Old 10-08-2008, 09:01 PM   #3
Tech Elite
 
MadRacer's Avatar
R/C Tech Elite Subscriber
 
Join Date: Aug 2005
Location: Australia
Posts: 2,351
Trader Rating: 29 (100%+)
Default

Sounds good.

Might have to get some Li Po's I think.

Thanks..
__________________
Boondal vintage Tamiya's

https://www.youtube.com/watch?v=vtmCddStNyM
MadRacer is offline   Reply With Quote
Old 10-08-2008, 09:28 PM   #4
dsl
Tech Regular
 
dsl's Avatar
 
Join Date: Mar 2007
Location: El Paso, TX
Posts: 365
Trader Rating: 1 (100%+)
Default

I use an HT in my Mugen box. It is a lot lighter and gives awesome power. No need for a regulator.

It lasts about 2-3 race weekends for me. Just keep an eye on the voltage.

I usually charge it as soon as it feels like it's losing power on my balancing charger.

http://www.amainhobbies.com/product_...ducts_id/14988
dsl is offline   Reply With Quote
Old 10-08-2008, 10:21 PM   #5
Tin
Tech Apprentice
 
Join Date: Oct 2008
Posts: 95
Default

Im current using a 14.8v Lipo pack by Losi made for starter boxes. It gives a very nick kick.

Tin
Tin is offline   Reply With Quote
Old 10-08-2008, 10:52 PM   #6
Tech Addict
 
Slippery's Avatar
 
Join Date: Jun 2004
Location: Gympie
Posts: 563
Trader Rating: 1 (100%+)
Default

been running the HT's as well in a Mugen box wouldn't use any thing else now

I think my pit man would quit if i had to lug Nimh around again

Not 1 issue in 18mths ..
Slippery is offline   Reply With Quote
Old 10-09-2008, 01:52 AM   #7
Tech Regular
 
Doodad's Avatar
 
Join Date: Sep 2007
Location: maybe not.....
Posts: 302
Trader Rating: 1 (100%+)
Send a message via Yahoo to Doodad
Default

As far as the HT packs, are you fellas using 1 or 2 packs? 2100 mah doesn't seem like a lot. I'm currently using two old 4200 nimh packs and I feel dirty about doing so.
Doodad is offline   Reply With Quote
Old 10-09-2008, 03:03 AM   #8
Tech Master
 
slakr's Avatar
 
Join Date: Jan 2007
Location: NC
Posts: 1,345
Trader Rating: 15 (100%+)
Default

Quote:
Originally Posted by Doodad View Post
As far as the HT packs, are you fellas using 1 or 2 packs? 2100 mah doesn't seem like a lot. I'm currently using two old 4200 nimh packs and I feel dirty about doing so.
This is the HT I use in my OFNA Truggy box for my RC8 and it lasts several weekends... no regulator needed.
http://www.carolinasrc.com/Webstore/...idproduct=4058
__________________
Serpent 748~VBC Wildfire D06
Serpent SRX-2 MM~Losi 22-4~HB D413~Yokomo B-MAX4 III,B-MAX2 MR V2
Mugen MBX7eco
Tamiya Wild One
ROAR No. 3-119960
slakr is offline   Reply With Quote
Old 10-09-2008, 03:09 AM   #9
Tech Addict
 
Slippery's Avatar
 
Join Date: Jun 2004
Location: Gympie
Posts: 563
Trader Rating: 1 (100%+)
Default

just the one
Slippery is offline   Reply With Quote
Old 10-09-2008, 03:30 AM   #10
Tech Adept
 
honda_stuntboy's Avatar
 
Join Date: Jan 2008
Location: Fruitport, MI
Posts: 184
Trader Rating: 27 (100%+)
Default

Quote:
Originally Posted by Doodad View Post
As far as the HT packs, are you fellas using 1 or 2 packs? 2100 mah doesn't seem like a lot. I'm currently using two old 4200 nimh packs and I feel dirty about doing so.
1 pack. Really think about how many times you use it in a race day. 15 times maybe. It will easily last all day if not 2 or 3 race days. I have an HT in one box and a Losi in another. Both are 2200 14.8v Work great and whip that motor over!
__________________
Check our my website at www.sumo-racing.com, like us on Facebook, or follow us on Twitter. Thanks, Terry.
honda_stuntboy is offline   Reply With Quote
Old 10-09-2008, 05:05 AM   #11
Tech Champion
 
air8's Avatar
 
Join Date: Apr 2007
Location: Hutch, KS
Posts: 5,503
Trader Rating: 7 (100%+)
Default

Lipos are awesome for starter boxes. Try to avoid using two high mAh 7.4 Lipos. The motors will draw too much current and burn out quickly, unless the motors are a heavy duty type motor. And I'm not sure how to explain the difference between motors.
__________________
--Driver...you are cleared into the track.....Smoke On.

--"U Ain't Fast!!"
Chris Pearce
air8 is offline   Reply With Quote
Old 10-09-2008, 05:25 AM   #12
Tech Master
 
Join Date: Oct 2002
Location: KY
Posts: 1,149
Trader Rating: 95 (99%+)
Default

Quote:
Originally Posted by air8 View Post
Lipos are awesome for starter boxes. Try to avoid using two high mAh 7.4 Lipos. The motors will draw too much current and burn out quickly, unless the motors are a heavy duty type motor. And I'm not sure how to explain the difference between motors.
This is NOT correct. A motor will not draw more or less current based on the amount of mAh output of the battery. The only thing higher mAh output does is allow A: longer run times an B: Will increase the packs overall amp draw capability.

Again, it WILL NOT change how many amps a motor draws.


As for using them in starter boxes I have been using a 4s 4000 mAh pack for 2 years now. I race every weekend April-October and only have to charge the pack abou twice a season. Of course this will vary for each person depending on how long it takes there car to fire up, get it lined up properly, and a myriad of other things.
__________________
www.rcrcr.com --------> B-Mag free since fall '07
RobbieS is offline   Reply With Quote
Old 10-09-2008, 05:33 AM   #13
Tech Master
 
Bulldawg RC's Avatar
 
Join Date: Feb 2007
Posts: 1,891
Trader Rating: 62 (98%+)
Default

It is the only way in my opinion. gell cell weighs too much and nimh discharge too quickly. i easily use my common sense lipo 5 or 6 race days without even checking the voltage and when i do check it, its still at 3.7-3.8 per cell. This is a nice and cheap upgrade.

http://www.BulldawgRC.com
__________________
Bulldawg R/C Batteries and Products
Nimh and Lipo Batteries and accessories
www.BulldawgRC.com
Team Driver for: Proline, Team Epic/Trinity, Hex Crew, Bulldawg R/C, Speed Demon Hobbies ~~~~TEAM CRUNCHY~~~~
Bulldawg RC is offline   Reply With Quote
Old 10-09-2008, 06:47 AM   #14
Tech Adept
 
Join Date: Sep 2008
Posts: 135
Trader Rating: 13 (100%+)
Default

Will this one work. I have a 6s 22.2v 2500Mah lipo that I have that is not being used. I will be getting the OFNA truggy box.
brian001 is offline   Reply With Quote
Old 10-09-2008, 06:53 AM   #15
Tech Champion
 
air8's Avatar
 
Join Date: Apr 2007
Location: Hutch, KS
Posts: 5,503
Trader Rating: 7 (100%+)
Default

Apologies. Sorry for wording it wrong.

Basically I just wanted to stongly suggest using a battery intended for starter boxes. I used to use two 7.4V 6000mAh(120amps) wired in series and I was burning up the motors every second weekend for about two months. Ofna true start and Losi box. First I replaced with stock, then both with Team Magic motors, then Traxxas Triton, then Ofna Truggy start motors.

I switched to one 14.8V 2100mAh(32amps) battery and put the stock motors back in both boxes. All is well now several months later. Although not as strong as the two battery arrangement, the single battery still has plenty of torque to break in engines all day long.

Thanx for the correction RobbieS
__________________
--Driver...you are cleared into the track.....Smoke On.

--"U Ain't Fast!!"
Chris Pearce
air8 is offline   Reply With Quote
Sponsored Links
Reply


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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Team Losi 8ight-T w/ Everything!! Punched R/C Items: For Sale/Trade 77 02-23-2009 09:01 AM
LI PO's in starter Box MadRacer Radio and Electronics 6 01-09-2009 11:07 AM
ni-mh or ni-cd? squad car Rookie Zone 30 10-23-2007 12:33 PM


All times are GMT -8. It is currently 02:22 PM.



SEO by vBSEO 3.5.0