SMALL - espritmodel.com SMALL - Telemetry SMALL - Radio
Reply
Thread Tools
Old Feb 13, 2013, 11:53 PM
A Snickering Hound
Muddie's Avatar
United States, SC, Myrtle Beach
Joined Jan 2012
210 Posts
Discussion
Soldering Battery Connectors

I bought a couple lipos that came with no connectors, so I'll need to solder them on myself. My problem is that I have had near-zero luck soldering larger awg wire - I never seem to be able to get the wire hot enough so that the solder will freely flow. I use a generic 40W soldering iron.

My question is, does my iron have enough "ooph" to solder 12 AWG? I know my skills aren't the best, but it seems that something else is lacking for me to get such poor results with larger wire.

Any suggestions would be greatly appreciated!

Bob
Muddie is offline Find More Posts by Muddie
Reply With Quote
Sign up now
to remove ads between posts
Old Feb 14, 2013, 12:10 AM
Sky Pilot
still4given's Avatar
Victorville, CA
Joined Jun 2006
1,114 Posts
Maybe your iron is not actually drawing 40 watts. I use a 40W iron with a chisel tip and it works well even on 10ga wire. You need to keep the tip clean and tinned. I feed a little solder right at the point of contact with the wire to help get the heat flowing into the wire. I then feed the solder at the tip of the wire so it can flow into the strands. It doesn't take long after that for the whole end of the wire to be hot enough to melt the solder all the way around. Give it a try.
still4given is offline Find More Posts by still4given
Reply With Quote
Old Feb 14, 2013, 03:34 AM
Reduce the drama...
rick.benjamin's Avatar
USA, OR, Damascus
Joined Apr 2004
4,044 Posts
A 60 watt iron is a bit bigger, carries more heat.
http://www.amazon.com/60-Watts-Solde.../dp/B0006NGZK0
http://www.hobbywarehouse.com/910-90...FQThQgodM3kAuw
http://compare.ebay.com/like/1109800...Types&var=sbar
http://www.ebay.com/itm/60-Watt-Sold...6777%26ps%3D54

Make sure you aren't using lead-free solder.
rick.benjamin is offline Find More Posts by rick.benjamin
Reply With Quote
Old Feb 14, 2013, 05:42 AM
A man with too many toys
United States
Joined Feb 2001
18,057 Posts
Where is a good place to buy solder in the US - not the crappy lead free stuff!
RC Man is offline Find More Posts by RC Man
Last edited by RC Man; Feb 14, 2013 at 07:05 PM.
Reply With Quote
Old Feb 14, 2013, 05:52 AM
Registered User
Greybird's Avatar
Florida
Joined Nov 2004
6,630 Posts
Radio Shack silver bearing solder works great. 62/36/2
Greybird is offline Find More Posts by Greybird
Reply With Quote
Old Feb 14, 2013, 06:14 AM
Registered User
USA
Joined Jan 2002
4,860 Posts
The key is to use a big tip with some thermal mass. Don't use a conical (pencil) tip. The other tip is to use a little solder on the tip to help transfer the heat when heating a connector.
Ohmic is online now Find More Posts by Ohmic
Reply With Quote
Old Feb 14, 2013, 06:24 AM
Registered User
Letchworth, Great Britain (UK)
Joined Jul 2004
12,004 Posts
I agree, 60W or more is better, but 40W can do the job if it has a large enough bit so that it doesn't cool down the minute it touches the large copper wire.
abenn is offline Find More Posts by abenn
Reply With Quote
Old Feb 14, 2013, 07:36 AM
Registered User
Barbados
Joined Jan 2011
2,137 Posts
http://www.rcgroups.com/forums/showthread.php?t=1722684
Get one of these and a chisle tip 40/60 solder and flux from Flea bay worth every penny,in this hobby soldering is a must.HK finally came through lol.
The Tug is offline Find More Posts by The Tug
Reply With Quote
Old Feb 14, 2013, 07:42 AM
On loan to Texas
Ohio AV8TOR's Avatar
United States, TX, Benbrook
Joined Oct 2005
5,341 Posts
Quote:
Originally Posted by Ohmic View Post
The key is to use a big tip with some thermal mass. Don't use a conical (pencil) tip. The other tip is to use a little solder on the tip to help transfer the heat when heating a connector.
+1 makes all the difference in the world and keep it clean
Ohio AV8TOR is offline Find More Posts by Ohio AV8TOR
Reply With Quote
Old Feb 14, 2013, 10:16 AM
Frankenstein recycled packs
rampman's Avatar
USA, AZ, Gilbert
Joined Jan 2006
8,845 Posts
For our hobby, just use the Radio Shack 60/40 rosen core lead based solder. We do not need the silver bearing type solder for 99% of our use in RC and it needs more heat than the lead based stuff.
IMO, buy this:
http://www.radioshack.com/product/in...ductId=2049774
and this:
http://www.radioshack.com/product/in...ductId=2062713
though you can buy shorter lengths than this. Trust me, larger diameter is better as it dispenses more flux per solder joint. More flux = better flow, better solder joint (in our use) and better cleaning.

Rick
rampman is online now Find More Posts by rampman
Reply With Quote
Old Feb 14, 2013, 10:37 AM
Registered User
Barbados
Joined Jan 2011
2,137 Posts
I tin first put flux on the unit then solder flows really easy,i use the smaller stiff and agree there's not enough flux,this way it runs like a charm.
The Tug is offline Find More Posts by The Tug
Reply With Quote
Old Feb 14, 2013, 10:48 AM
Registered User
United States, IA, Iowa City
Joined Oct 2011
27 Posts
Always remember that FLUX is your friend
Pixar is offline Find More Posts by Pixar
Reply With Quote
Old Feb 14, 2013, 11:03 AM
Registered User
United States, MN
Joined Feb 2011
4,377 Posts
As others have said a big tip on the iron is key. Flux doesn't hurt either. I'll agree with rick on the 60/40 rosen core solder. The silver bearing is only good if you add your own flux and it's really thin so for large gauge it's not ideal in my opinion.

Best solution though if you ask me, ditch the iron and get some Anderson PowerPoles and a crimper.
grimbeaver is offline Find More Posts by grimbeaver
Reply With Quote
Old Feb 14, 2013, 11:15 AM
Pro Bro #1963
Joined Mar 2004
911 Posts
What type of flux are you guys using when doing electrical soldering with 60/40 solder from Radio Shack for example?

thanks.
flygilmore is offline Find More Posts by flygilmore
Reply With Quote
Old Feb 14, 2013, 11:32 AM
Frankenstein recycled packs
rampman's Avatar
USA, AZ, Gilbert
Joined Jan 2006
8,845 Posts
See my link above.
Rosen flux.
Do NOT use no-clean.
Rick
rampman is online now Find More Posts by rampman
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Question Best way to connect motors and ESC's: Use solder or bullet connectors? 2MacGyver Multirotor Talk 24 Nov 30, 2013 02:58 PM
Discussion Which soldering station will be enough to solder batteries esc & motor connectors? ath512 The Builders Workshop 15 Nov 04, 2009 04:17 PM
soldering battery connectors _Lunchbox_ Batteries and Chargers 19 Aug 25, 2005 12:24 PM
Soldering connectors on batteries dacaur Micro Helis 3 Jun 23, 2005 12:43 AM