R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 06-28-2004, 11:35 AM   #1
Tech Master
 
rctoyguy's Avatar
 
Join Date: Apr 2004
Location: Clay, Alabama
Posts: 1,110
Trader Rating: 21 (100%+)
Default Wire Question - 12gauge vs 14gauge

I am swapping ESCs this week, and I am moving from using Dean's connectors to direct wiring everything - since I am basically rewiring the entire car, I thought it would be a good time to ask -

is 12 gauge wire noticeably better than 14 gauge?

I have enough 14 gauge Novak super flex to redo everything, but if 12 gauge is that much better, I want to go to it while I am doing it.

What do YOU use?
__________________
----
Jeff
rctoyguy is offline   Reply With Quote
Old 06-28-2004, 11:50 AM   #2
Tech Regular
 
Fuzzy's Avatar
 
Join Date: Jul 2003
Location: Mentor , Ohio
Posts: 397
Trader Rating: 4 (100%+)
Default

rctoyguy,

I use 14 gauge wire myself. The SuperFlex wire is good stuff and it's easy to work with. You'll find, now that you're hard wiring, that 14 gauge is easier to solder to your batteries. It creates a better joint than 12 gauge. As for performance between the two, it's a moot point. The runs are so short, that you would never see an advantage of using the thicker gauge.
Fuzzy is offline   Reply With Quote
Old 06-28-2004, 12:14 PM   #3
Tech Elite
 
macnkitty2002's Avatar
 
Join Date: Jun 2004
Location: Montgomery, AL
Posts: 4,920
Trader Rating: 7 (100%+)
Lightbulb

14 gauge wire lets in more electricity, thus reducing your run time and increasing your top-speed .12 gauge wire lets in less electricity, thus increasing runtime and reducing top-speed.

I just mowed the lawn too, incase you wanted to know.
macnkitty2002 is offline   Reply With Quote
Old 06-28-2004, 12:36 PM   #4
Tech Addict
 
Join Date: Mar 2003
Location: Long Island, New York
Posts: 716
Default

Quote:
Originally posted by macnkitty2002
14 gauge wire lets in more electricity, thus reducing your run time and increasing your top-speed .12 gauge wire lets in less electricity, thus increasing runtime and reducing top-speed.

I just mowed the lawn too, incase you wanted to know.
Why would thinner wire let in more electricity? I dont think that running thinner wire will increase runtime. If there is enough current flowing through the wires that the amount of energy that can pass through the wire is limited by it thickness, then the energy would most likely be lost as heat rather than increasing runtime.
AE Racer is offline   Reply With Quote
Old 06-28-2004, 03:15 PM   #5
Tech Elite
 
macnkitty2002's Avatar
 
Join Date: Jun 2004
Location: Montgomery, AL
Posts: 4,920
Trader Rating: 7 (100%+)
Unhappy

sorry. asked my friend about the wire gauge. he told me that the 14 was bigger than the 12 gauge. i guess thats why he is not an electrician, also because he said he failed the ''basic electronics 101" class in college.
macnkitty2002 is offline   Reply With Quote
Old 06-28-2004, 03:26 PM   #6
Tech Elite
 
Neil Rabara's Avatar
 
Join Date: Jul 2002
Location: Lone Star
Posts: 4,821
Default

Here's another thing to consider: weight. The same length wire, 12 gauge will be heavier.
Neil Rabara is offline   Reply With Quote
Old 06-28-2004, 03:44 PM   #7
Super Moderator
 
Grizzbob's Avatar
 
Join Date: Feb 2002
Location: Sand Springs, OK
Posts: 3,063
Trader Rating: 2 (100%+)
Default

Quote:
Originally posted by macnkitty2002
sorry. asked my friend about the wire gauge. he told me that the 14 was bigger than the 12 gauge. i guess thats why he is not an electrician, also because he said he failed the ''basic electronics 101" class in college.
I can see why, since he has it wrong... 12GA is the thicker wire of those 2, & as such it has more copper in it, so it will tend to have slightly lower electrical resistance than 14GA. But an advantage of 14GA is that it is lighter, & also more flexible, so in some situations(like wiring a 1/12 scale car, with a floating pod for the rear suspension), it's a good idea to have more flexible wire to the motor, so the wire won't interfere with suspension action as much. And really, there isn't that much difference in resistance between the two, so for some, 14GA is a very good compromise(& it's actually what Novak's top-of-the-line GT7 uses).....
__________________
Bob Seay
Tamiya TRF417, TA05v.2, TRF211XM, M-05ver.2R, XRAY X12, Associated B5m Factory Lite

Go Pokes!!!
Grizzbob is offline   Reply With Quote
Old 06-28-2004, 03:46 PM   #8
Tech Elite
 
kufman's Avatar
 
Join Date: Feb 2004
Location: Elburn, IL
Posts: 3,428
Trader Rating: 6 (100%+)
Default

If you aren't running an application where there is high current draw, ie open modified sedan, then I wouldn't worry about the difference between 14 and 12 AWG wire. 14 is eaesier to work with, 12 will pass more current for a given temperature rise (the temperature of the wire with a given current). Keeping your wires short and making good connections will help your performance the most. Don't make them so short that you will not be able to reterminate the wire in the future. After you solder and desolder a pack a few times the end of the wire will become frayed and not so good. Allow a little bit of slack so that you can clip off the end of the wire, strip it back a little, and retin the end for use.
kufman is offline   Reply With Quote
Old 06-28-2004, 03:50 PM   #9
Tech Elite
 
Join Date: Sep 2001
Location: Newville,Pa
Posts: 2,152
Trader Rating: 7 (100%+)
Default

Are you Brian Kinwald, Matt Francis, Musami Hirosaka, Barry Baker, ect.... in disguise?? HMM, no.... then I severally doubt you will notice a difference. Also if you don't have a really good iron, you will have more resistance in a 12 guage solder joint than on a 14 guage one because 12 guage is pretty hard to get a good joint without the proper equiptment.... so the resistance between the 2 wires will actually be worse with a 12 guage wire......


macnkitty2002- that is one of the absolutely dumbest things I have ever read, in reality bigger wire will flow current more efficiently, efficiency = power and runtime..... however the efficiency, power, and weight difference is so small you will never even see them, except in 1/12th scale, but the preformance difference has all to do with binding the rear pod by the thicker wire.....



BTW: the next few posts will probably be "JOINT" jokes........
__________________
G's RC Raceway- Best off-road track on the east coast...period!!!

Pitman for Team Dallas Austin...
IMPACTPLAYR is offline   Reply With Quote
Old 06-28-2004, 03:56 PM   #10
Tech Elite
 
Join Date: Sep 2001
Location: Newville,Pa
Posts: 2,152
Trader Rating: 7 (100%+)
Default

Quote:
Originally posted by macnkitty2002
14 gauge wire lets in more electricity, thus reducing your run time and increasing your top-speed .12 gauge wire lets in less electricity, thus increasing runtime and reducing top-speed.

I just mowed the lawn too, incase you wanted to know.

BTW: the same people with this mentality also have 120lb. injectors, a 300 shot of NOS, and 4" exhaust piping on their 4 banger Civic for "better preformance"....

on a side note.... these import guys are doing what we used to do with our 4 cyl. stangs', and chargers' and Daytonas' 10 years ago... ..... but their "innovators"
__________________
G's RC Raceway- Best off-road track on the east coast...period!!!

Pitman for Team Dallas Austin...
IMPACTPLAYR is offline   Reply With Quote
Old 06-28-2004, 03:59 PM   #11
Tech Master
 
rctoyguy's Avatar
 
Join Date: Apr 2004
Location: Clay, Alabama
Posts: 1,110
Trader Rating: 21 (100%+)
Default

It looks like the general consensus is that 14 gauge wire is plenty good for all but the most SERIOUS driver.

I knew that the difference in performace (resistance) would be minimal, but I have also found that every once of weight counts, so I figured every ohm of resistance would too.

You have all made me feel better - I can (and will) use the wire I have and not worry about it. Good clean solder JOINTs are probably more critical than 1 size of wire.

There, I didn't make a joint joke, but I did emphasize it!

Thanks!
__________________
----
Jeff
rctoyguy is offline   Reply With Quote
Old 06-28-2004, 04:08 PM   #12
Tech Adept
 
Join Date: Jun 2004
Location: Connecticut
Posts: 208
Default Resistance of Wire

Here is a good calculator to use to see that it makes very little difference when considering the "wire" only. Obviously you will have a little loss at each joint, but for the wire only check out this link and play with the calculator

http://www.cirris.com/testing/resistance/wire.html

Length of wire is more important
LeadFoot is offline   Reply With Quote
Old 06-29-2004, 03:34 AM   #13
Tech Addict
 
Join Date: Feb 2004
Location: Iceland
Posts: 588
Default

Use the 14 gauge that you have. If the wire gets hot after mains go to 12 gauge.
andsetinn is offline   Reply With Quote
Old 06-29-2004, 06:02 AM   #14
Tech Master
 
dontfeelcold's Avatar
 
Join Date: Aug 2003
Location: Where there's smoke there's a tyre
Posts: 1,721
Trader Rating: 21 (100%+)
Default

Quote:
It looks like the general consensus is that 14 gauge wire is plenty good for all but the most SERIOUS driver
The world champ uses 14gauge. I saw it with my own eyes. As for the weight thing, you will usually have to add weight to the car anyway.
dontfeelcold is offline   Reply With Quote
Old 06-29-2004, 06:39 AM   #15
Tech Master
 
jaysimpson's Avatar
R/C Tech Charter Subscriber
 
Join Date: Oct 2001
Posts: 1,869
Trader Rating: 9 (100%+)
Send a message via AIM to jaysimpson
Default

He is running a Losi, no weight will be added. He needs to lose as much weight as possible,LOL.
__________________
Kalgard Racing
Banzai Motorsports
ProMatch Racing
A-Train Racing
Warehouse Raceway
jaysimpson is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Lipo Battery Balancer wire Question ckaspar Radio and Electronics 2 06-13-2008 10:53 AM
Graphite + Electronics Wire Question aN4rK1 Electric On-Road 6 04-28-2006 01:44 AM
Question regarding replacing antenna wire. ch4dwick Electric On-Road 3 06-20-2005 02:59 AM
Touring Car ESC Wire Gauge Question wdm80 Electric On-Road 22 11-27-2004 01:23 PM
Wire gauge question Alvin Rookie Zone 2 02-28-2002 08:44 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.


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