R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 05-12-2008, 04:31 PM   #631
Tech Elite
 
ShaunMac's Avatar
 
Join Date: Jun 2006
Location: Loading...
Posts: 3,390
Default

What methods of heating have been working out the best at the track?
ShaunMac is offline   Reply With Quote
Old 05-12-2008, 04:32 PM   #632
Company Representative
 
Danny/SMC's Avatar
 
Join Date: Oct 2001
Location: Elkton, VA
Posts: 3,097
Trader Rating: 2 (100%+)
Default

I haven't tested all temps but I would say 120-140 farenheit should give good results.
Danny/SMC is offline   Reply With Quote
Old 05-13-2008, 05:16 AM   #633
Tech Addict
 
poorbie:('s Avatar
 
Join Date: Aug 2006
Location: Auchenflower, Brisbane
Posts: 617
Trader Rating: 10 (100%+)
Send a message via MSN to poorbie:(
Default

OMG THAT TOOK ALONG TIME!

i just read through both threads tonight... 4 hrs later, im here!

anyways, it seems as if these packs are awesome in TC but what about anywhere else?

myself,ive got a AE TC3 (yes, its old) but its indestructable and when we make a track and race socially, im almost ALWAYS the last one standing... but with my ancient nimh, everyone has moved to lipos and i wanna show them up

also, im building an offroad conversion of a hyper 8.5 PRO. ive decided 4s will be enough for me, and getting any pack to fit is a minor issue...
the question im seeking is: what happens when i put 2 of the 5000mah packs in series, and only run 1 connection to the esc (mamba monster). if i set the lipo cutoff to 3.1v/cell, what would happen if 1 pack is weaker and dropped below this magic number, while the other cells are happily above the cutoff?

any questions? is it worth running 2 seperate cutoff units = more clutter and fiddling around... and how long will these packs last geting heavily used in my setup? (obviously harder than any racing tc setup (speed runs could have the same effect)

thanks, and i looked for an answer and can happily tell you that this has not been asked in this thread yet!

ryan
__________________
Xray XT8E
MMM - Neu 1512 3D - 4/6S lipo.

Xray '09 T2 - Losi esc + motor - 2s lipo
poorbie:( is offline   Reply With Quote
Old 05-13-2008, 06:01 AM   #634
Tech Elite
 
ta_man's Avatar
 
Join Date: Nov 2006
Location: New Jersey
Posts: 4,363
Trader Rating: 151 (100%+)
Default

Quote:
Originally Posted by poorbie:( View Post
the question im seeking is: what happens when i put 2 of the 5000mah packs in series, and only run 1 connection to the esc (mamba monster). if i set the lipo cutoff to 3.1v/cell, what would happen if 1 pack is weaker and dropped below this magic number, while the other cells are happily above the cutoff?

ryan
I'm getting two SMC 5000 LiPos for a 1/8th buggy conversion.

I suggest you do three things:

1) When you order them, order from someplace where you are dealing with a live person that you can talk to, tell them what you are doing and ask that you get two packs with run times close together. The SMC packs come already cycled with the run times marked on the box, so it would be easy for someone to pick two that are close together.

2) Set you cutoff higher than 3.V/cell, something liKe 3.V cell. That will give you a cushion.

3) Ideally, make a balancing harness and input harness so you can charge them as one S battery pack. Failing that, Charge them on the same charger, one at a time so they end up with the same state of charge before you run them.
ta_man is offline   Reply With Quote
Old 05-13-2008, 01:13 PM   #635
Tech Fanatic
 
Tornado_Racing's Avatar
 
Join Date: Feb 2004
Location: Anywhere there is racin'
Posts: 750
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by Danny/SMC View Post
I haven't tested all temps but I would say 120-140 farenheit should give good results.
Taking this one step further. Keep the pack heated to 140 even after the pack has completed a charge. Remove from the heating pad or sack and then re-peak the pack just before you go out to run using the standard Lipo charge on the GFX or a compatable charger. I have seen an increase in up front voltage or rip by re-peaking or re-topping the pack while it's around 130-140 degrees.

I leave my packs in the "wrapped-up-like-a-burrito" heating pad just prior to a run. The heat in the pack reminds me of a 10 amp charged NIHM pack. Nice and toasty come race time for that nasty up front voltage.
__________________
Tony Moffre
PRS Customer Service

PRS - Hyperdrive - EA Motorsports - Corally USA - Parma/Faskolor - SMC - Killer Koncepts - MSA - Finishline - IRS - Lunsford - Trinity - Guarantee Graphix - RC4Less
Tornado_Racing is offline   Reply With Quote
Old 05-13-2008, 03:53 PM   #636
Company Representative
 
Danny/SMC's Avatar
 
Join Date: Oct 2001
Location: Elkton, VA
Posts: 3,097
Trader Rating: 2 (100%+)
Default

Were thinking of changing our Lipo case so the wires would come out on top of the casing. What I would like to know is in what corner should we put the wires ? When looking at a sedan would you rather have the wires on the outside front of the pack or the outside rear ?
Danny/SMC is offline   Reply With Quote
Old 05-13-2008, 03:57 PM   #637
Tech Fanatic
 
Tornado_Racing's Avatar
 
Join Date: Feb 2004
Location: Anywhere there is racin'
Posts: 750
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by Danny/SMC View Post
Were thinking of changing our Lipo case so the wires would come out on top of the casing. What I would like to know is in what corner should we put the wires ? When looking at a sedan would you rather have the wires on the outside front of the pack or the outside rear ?
Are you wanting to do a "stick pack" wiring or like the Orion packs as far as looks go?
__________________
Tony Moffre
PRS Customer Service

PRS - Hyperdrive - EA Motorsports - Corally USA - Parma/Faskolor - SMC - Killer Koncepts - MSA - Finishline - IRS - Lunsford - Trinity - Guarantee Graphix - RC4Less
Tornado_Racing is offline   Reply With Quote
Old 05-13-2008, 04:01 PM   #638
Company Representative
 
Danny/SMC's Avatar
 
Join Date: Oct 2001
Location: Elkton, VA
Posts: 3,097
Trader Rating: 2 (100%+)
Default

The wires would come out on top in the corner just like the Core pack. I'm just wondering where would it be best to have the wires come out.
Danny/SMC is offline   Reply With Quote
Old 05-13-2008, 04:06 PM   #639
Tech Fanatic
 
Tornado_Racing's Avatar
 
Join Date: Feb 2004
Location: Anywhere there is racin'
Posts: 750
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by Danny/SMC View Post
The wires would come out on top in the corner just like the Core pack. I'm just wondering where would it be best to have the wires come out.
I got ya! IMHO rear outside.
__________________
Tony Moffre
PRS Customer Service

PRS - Hyperdrive - EA Motorsports - Corally USA - Parma/Faskolor - SMC - Killer Koncepts - MSA - Finishline - IRS - Lunsford - Trinity - Guarantee Graphix - RC4Less
Tornado_Racing is offline   Reply With Quote
Old 05-13-2008, 07:19 PM   #640
Tech Elite
 
ShaunMac's Avatar
 
Join Date: Jun 2006
Location: Loading...
Posts: 3,390
Default

Tony - What type of heating pad are you using?
ShaunMac is offline   Reply With Quote
Old 05-13-2008, 07:25 PM   #641
Tech Champion
 
lbckevin's Avatar
 
Join Date: Jan 2003
Location: Orange County, CA
Posts: 5,528
Trader Rating: 91 (99%+)
Default

Danny,

On My Xray t2008 sedan it would work either way as long as its on the outside. It will also work on my Losi XXXT CR truck either way...
__________________
Kevin Smith
Hobbywing * Pro-Line * MIP * Paint Monster
lbckevin is offline   Reply With Quote
Old 05-13-2008, 07:42 PM   #642
Tech Elite
 
Joel Lagace's Avatar
 
Join Date: Feb 2002
Location: Ottawa, Ontario, Canada
Posts: 2,628
Trader Rating: 4 (100%+)
Default

when looking at the top of a sedan i woudl like the wire coming out the top right towards the front of the car. So call it the Front Right corner
__________________
"Without Rules its just Backyard Bashing!"
www.rcottawa.com
Joel Lagace is offline   Reply With Quote
Old 05-13-2008, 08:32 PM   #643
Tech Elite
 
Mike Haynes's Avatar
 
Join Date: Sep 2003
Location: Area 51
Posts: 3,699
Trader Rating: 2 (100%+)
Default

Outside front, assuming the top is the (narrower side of the case).
__________________
Team Associated - Reedy Power - Sweep - Protoform - TQ Wire - Lacher paint
Mike Haynes is offline   Reply With Quote
Old 05-13-2008, 08:33 PM   #644
Tech Master
 
Verndog's Avatar
R/C Tech Elite Subscriber
 
Join Date: Jun 2007
Location: PPDBillet.com USA
Posts: 1,845
Trader Rating: 16 (100%+)
Default

Quote:
Originally Posted by Danny/SMC View Post
When looking at a sedan would you rather have the wires on the outside front of the pack or the outside rear ?
I'd say outside rear. Most top decks are wider and more heavily reinforced in the front so there are less obsticles to fish thru. Also, puts that little extra wire weight directly across from the motor to help a bit with balance.
__________________
--->Dial-a-Grip for TC6
Kevin -- PPDBillet---TC6---Exoray 008
---Team Hoarders---
Verndog is offline   Reply With Quote
Old 05-13-2008, 09:00 PM   #645
Tech Addict
 
sonic31's Avatar
 
Join Date: Jun 2004
Location: Hollywood,FL.
Posts: 594
Trader Rating: 2 (100%+)
Default

hello danny/smc, everyone will have their preference in wiring but i truly believe in the trakpower, orion, checkpoint style to be the best overall, but i can easily handle using deans or even traxxas if it was best( i bought 2 packs earlier today) something to think about, thanks bro
__________________
Tamiya TRF418 SAMIX / KO Propo / Tekin RS Pro / Spektrum
sonic31 is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
* * * BRAND NEW * * * FTB4, SMC 5000 28c Hardcase 7.4 Lipo, JR Z8800s jpeck R/C Items: For Sale/Trade 12 10-26-2008 04:03 AM
FOR SALE: SMC 4000 28C HARDCASE LIPO'S commander Australia For Sale/Trade 4 10-20-2008 11:08 AM
SMC 4000 mah Hardcase Lipos 28C NIB rraden R/C Items: For Sale/Trade 11 09-12-2008 11:20 AM
SMC 28C 4000 hardcase lipo fred kellner R/C Items: For Sale/Trade 0 04-09-2008 08:31 AM
New SMC Lipos 7.4v 2s 4000 and 5000mah HardCase IOwNMkeG R/C Items: For Sale/Trade 4 03-30-2008 01:54 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 02:45 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