R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 03-08-2007, 02:19 PM   #16
Tech Addict
 
carkillaii's Avatar
 
Join Date: Jan 2004
Location: Las Vegas
Posts: 686
Default

Great info guys I just orderd a VXR LTK-311300 Its good to know the do's and don'ts of li-po


Carl G when you coming back out to Vegas?
carkillaii is offline   Reply With Quote
Old 03-08-2007, 02:21 PM   #17
Tech Lord
 
syndr0me's Avatar
 
Join Date: Dec 2004
Location: 5280 Raceway
Posts: 13,140
Trader Rating: 32 (100%+)
Default

Quote:
Originally Posted by carkillaii
Great info guys I just orderd a VXR LTK-311300 Its good to know the do's and don'ts of li-po


Carl G when you coming back out to Vegas?
Where'd you find the VXR for sale?
syndr0me is offline   Reply With Quote
Old 03-08-2007, 02:27 PM   #18
Tech Addict
 
carkillaii's Avatar
 
Join Date: Jan 2004
Location: Las Vegas
Posts: 686
Default

Quote:
Originally Posted by syndr0me
Where'd you find the VXR for sale?
Syn you have a pm
carkillaii is offline   Reply With Quote
Old 03-08-2007, 05:43 PM   #19
Tech Regular
 
floodo1's Avatar
 
Join Date: Sep 2003
Location: Fresno, CA
Posts: 452
Send a message via ICQ to floodo1 Send a message via AIM to floodo1 Send a message via Yahoo to floodo1
Default

wow you guys are using some large capacity packs.
Ive been using a 750mah in my Helios. IIRC its something like 45 mins of run time. IDK it doesnt matter much cuz i just charge it every time or 2 that i race.
The main advantage is that its SUPER lightweight.

PS- I use VXR pack, idk about any foam holster, also no balancing plug. Its just a 3 cell pack with a j plug. it did come with 2 pieces of foam, but its not like foam is hard to find
That said the pack has worked great for me, and i'm sure vxr is a reliable brand.
floodo1 is offline   Reply With Quote
Old 03-08-2007, 10:32 PM   #20
TEM
Tech Regular
 
TEM's Avatar
 
Join Date: Apr 2005
Posts: 253
Default Converted!

Tonight I put the cells(2 parallel packs of 3s1p 640mah kokams to make 1280mah) into my radio (R1Pro SPCM) They register at 12.4v on the radio after a charge. The RC transmitters we use for car draw approx 200mah give or take which is well in range of the lipos. Bench test thumbs up!, Track test this weekend!...
TEM is offline   Reply With Quote
Old 03-09-2007, 03:29 AM   #21
Tech Elite
 
wallyedmonds's Avatar
 
Join Date: Jul 2006
Location: Brampton ont canada
Posts: 3,662
Default

i know ppl that do this and the only problem they seem to have is they forget to charge the thing cuz it takes so long to discharge
i dont bother i just spend the money on tires and fancy soldering irons
wallyedmonds is offline   Reply With Quote
Old 03-09-2007, 06:08 AM   #22
TEM
Tech Regular
 
TEM's Avatar
 
Join Date: Apr 2005
Posts: 253
Default

Quote:
Originally Posted by wallyedmonds
i know ppl that do this and the only problem they seem to have is they forget to charge the thing cuz it takes so long to discharge
i dont bother i just spend the money on tires and fancy soldering irons
These lipos that fit in the given space can give you anywhere from a few hours to 10 hours of use typical. I would probably just plug it in after each track day or do it in between every few runs to top it off. It's another thing you get into a habit of doing. With the nicad and nimh, I always brought a low current AC adaptor to plug into the radio whenever I feel like it. This is no different. I fly with lipo and I got an orion PE for cars. Not a single lipo ESC nor novak safety but I never had issues (knock on wood). You'd be spending more time with IB's than you would Lipo!...

Fancy soldering irons; you only need 1 and maybe a 2nd if you do special things... but tires... well. it only takes the price of 1 set of tires to get a set of lipos for a radio!
TEM is offline   Reply With Quote
Old 03-09-2007, 12:08 PM   #23
Tech Addict
 
MrBlack's Avatar
 
Join Date: Jul 2006
Location: OC
Posts: 746
Default

Quote:
Originally Posted by syndr0me
I've gotten into the habit of putting my LiPo batteries in a Liposack for storage during the week. I guess I could add the extra step of doing the same with my transmitter pack.

MrBlack,

At what voltage would you want to pull that pack from your radio and charge it to ensure you don't discharge it too far?
I pull my out at around 9.6A because that is when the radio begins to beep.

A 3S LiPo of proper quality should be able to go down to 2.7V per cell or 8.1V per packs without any damage.
__________________
TEAM ORION - AVIONICS - KYOSHO - KO PROPO - PEAK

"Racing is about the journey not the destination if it wasn't it would simply be called Arriving"

"The solution is people need to spend more of their efforts on promoting and finding more people to race with, rather then a personal quest to form a class that they can win at."
MrBlack is offline   Reply With Quote
Old 03-09-2007, 12:09 PM   #24
Tech Champion
 
asw7576's Avatar
 
Join Date: Sep 2004
Posts: 5,792
Default

I'm using Muchmore 2100 in 3PK. I play every Sunday. It last about 3 weeks before recharging.
__________________
On Road : Xray NT1 , RX8 , T4 || Mugen Seiki MRX4-R , MTX4 , MTX3 prospec || Tamiya M03 , M04 || Top Racing Sabre FD2
Off Road : Xray XT8 || Hobao Hyper 8
Radio : Futaba 3PKS || KO propo EX-10 eurus
asw7576 is offline   Reply With Quote
Old 03-09-2007, 12:22 PM   #25
Tech Initiate
 
Join Date: Apr 2006
Posts: 32
Default

So are these batteries a direct fit or do you have to do some modifications?

My EX-10 Helios eats up gobs of power, and the 2500 NiMH last a couple of hours, good for 2-3 race days.

Do you know what would work well with this radio?
edlan is offline   Reply With Quote
Old 03-09-2007, 01:56 PM   #26
Tech Addict
 
fraz's Avatar
 
Join Date: Mar 2002
Location: Santa Cruz, CA
Posts: 653
Send a message via AIM to fraz
Default

Quote:
Originally Posted by edlan
So are these batteries a direct fit or do you have to do some modifications?

My EX-10 Helios eats up gobs of power, and the 2500 NiMH last a couple of hours, good for 2-3 race days.

Do you know what would work well with this radio?
Yeah, I use a Helios with Thunder Power 3-cell pack and it rocks. I need the light weight and extra juice for long nitro mains and have tested it well. Last big race was Vegas at the end of last year. I started at 12.3V and ran practice in the morning (~15 minutes). I qualified for crap so I ran the C-main (5 min warmup + 20 minutes) and got 2nd for the bump-up. I started the back of the B-main (5 min warmup + 40 minute main) and finished in 4th, missing the bump to the A-main by a lapAfter 1.5 hours of solid running, I was still at 12.1V.

For the setup, I took my case apart and took some small wire and soldered on to a regular male Deans plug. Then I soldered to the 2 leads behind where the stock battery contacts go and reassembled the case. Now I can plug in the Lipo or use a stock battery tray if I still want to. BTW, I don't want to anymore

Don't let the 1100mAH rating fool you. These things are way more efficient than round cells.
fraz is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
HAKKO ESD Safe Soldering Station and ORION Advantage Carbon LiPo Charger. SWEET!! Ron Meloni R/C Items: For Sale/Trade 4 09-12-2008 12:08 PM
temporary AM radio setup for 1/8 nitro buggy......will I be safe?? pwnzor Radio and Electronics 5 07-06-2008 12:55 AM
temporary AM radio for 1/8 nitro buggy....will i be safe?? pwnzor Nitro Off-Road 49 06-30-2008 10:25 PM
futaba 3pm -fm radio with 2 recivers and venom fail safe for sale 95 $hiped milk R/C Items: For Sale/Trade 14 01-14-2008 07:02 AM
Ofna micro fail safe, jr z650m 650 servo, and rtr ofna radio set cappa R/C Items: For Sale/Trade 13 02-03-2005 11:35 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 07:59 PM.


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