R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 10-07-2001, 03:20 PM   #1
Tech Addict
 
Join Date: Aug 2001
Location: Richmond, Va
Posts: 679
Default Building a new pack

I'm attempting to build a few packs (side by side), but for some reason, I can't get the solder to stick to the battery. It just clumps up on the bar. I'm using Dean's bars on Panasonic 3000 batteries, rosin core solder, flux, and a 100wt soldering gun. Why can't I get the solder to stick to the batteries and make the bar joints look neat and tiddy? Am I missing something?
tekrsq is offline   Reply With Quote
Old 10-07-2001, 04:36 PM   #2
RCTech Member #2
 
TSR6's Avatar
R/C Tech Elite Subscriber
 
Join Date: Aug 2001
Posts: 5,951
Trader Rating: 5 (100%+)
Send a message via ICQ to TSR6
Default

Did you rough up the end of the cell with a dremel or sand paper? What solder are you using? I use 60/40...
__________________
Troy
RCTech Member #2

The postings and views expressed on this site are my own and do not necessarily reflect the positions, strategies, or opinions of any company I may be employed by.
TSR6 is offline   Reply With Quote
Old 10-07-2001, 04:39 PM   #3
Tech Elite
 
Trips's Avatar
 
Join Date: Aug 2001
Location: 360 Speedway
Posts: 2,251
Trader Rating: 16 (100%+)
Default

Are you tinning the ends of the cells before you try to solder the bars on? IF not you may have a hard time getting solder to stick to the cells.

I apply a little bit of flux to the end of the cell, clean and tin the tip of the iron, then apply heat to the cell for four seconds or so. Then apply a bit of solder and see if it flows onto the cell. Don't keep the heat on the cell too long.

If you're still not getting the solder to flow onto the end of the cell, your iron may not be getting the job done. You need not only high wattage, but a heavy tip as well.

Trips
__________________
MARSHAL!!
Trips is offline   Reply With Quote
Old 10-07-2001, 04:55 PM   #4
Tech Addict
 
Join Date: Aug 2001
Location: Richmond, Va
Posts: 679
Default

Thanks guys. I'm using 60/40 rosin core solder, but I didn't think to rough up the ends. What's "tinning" the ends?
tekrsq is offline   Reply With Quote
Old 10-07-2001, 05:29 PM   #5
Tech Master
 
AE_Racer's Avatar
 
Join Date: Aug 2001
Location: Florida, USA
Posts: 1,127
Send a message via AIM to AE_Racer
Default

tinning the ends means to put solder on the part of the wire you will be soldering, cover the whole exposed wire with solder, this makes much easier to solder to something
AE_Racer is offline   Reply With Quote
Old 10-07-2001, 06:27 PM   #6
RCTech Member #2
 
TSR6's Avatar
R/C Tech Elite Subscriber
 
Join Date: Aug 2001
Posts: 5,951
Trader Rating: 5 (100%+)
Send a message via ICQ to TSR6
Default

AE - yes....but in this case he needs to "tin" the cells.. Just go through and apply a light ammount of solder to each end of each cell... go though and do one end at a time, so that you dont only do one cell at a time... it keeps it from heating up.
__________________
Troy
RCTech Member #2

The postings and views expressed on this site are my own and do not necessarily reflect the positions, strategies, or opinions of any company I may be employed by.
TSR6 is offline   Reply With Quote
Old 10-07-2001, 06:47 PM   #7
Tech Adept
 
dcracer's Avatar
 
Join Date: Aug 2001
Location: Ontario, Canada
Posts: 115
Default

It is possible that if you are using a soldering gun, rather than a quality soldering iron, it is just not up to the task and you are not getting a proper heat transfer to flow the solder.
dcracer is offline   Reply With Quote
Old 10-07-2001, 08:22 PM   #8
Tech Champion
 
Core Creations's Avatar
R/C Tech Elite Subscriber
 
Join Date: Sep 2001
Location: Back in the booth
Posts: 5,748
Trader Rating: 95 (100%+)
Send a message via AIM to Core Creations
Default

Yeah, the soldering iron is a BIG part of quality joints. I also use a small amount of Radio shack rosin. Just put a tiny dap of it on the cell and the solder will flow great. I also use either Deans Ultra solder or Radio shack computer solder. Both work excellent!
Core Creations is offline   Reply With Quote
Old 10-07-2001, 08:43 PM   #9
Tech Addict
 
Join Date: Aug 2001
Location: Richmond, Va
Posts: 679
Default

The highest rated iron I can find is 60 wt. Is that enough?
tekrsq is offline   Reply With Quote
Old 10-07-2001, 08:46 PM   #10
Tech Master
 
hobbipro's Avatar
 
Join Date: Sep 2001
Location: West Palm Beach
Posts: 1,326
Trader Rating: 21 (100%+)
Default

I think your soldering gun is not up to the challenge. Try to find a soldering iron, such as a Weller 60 watt iron. Sears, and Home Depot carry these in my area, maybe they do in your area as well.
hobbipro is offline   Reply With Quote
Old 10-07-2001, 08:52 PM   #11
RCTech Member #2
 
TSR6's Avatar
R/C Tech Elite Subscriber
 
Join Date: Aug 2001
Posts: 5,951
Trader Rating: 5 (100%+)
Send a message via ICQ to TSR6
Default

If you can, get one with a flat tip. The generally work better with battery building than pencil tip soldering irons.
__________________
Troy
RCTech Member #2

The postings and views expressed on this site are my own and do not necessarily reflect the positions, strategies, or opinions of any company I may be employed by.
TSR6 is offline   Reply With Quote
Old 10-07-2001, 09:22 PM   #12
Tech Elite
 
Join Date: Aug 2001
Posts: 2,583
Default

Tekrsq

You running electrics now?

You need to tin not only the wires but the cells themselves.
Sydewynder is offline   Reply With Quote
Old 10-07-2001, 09:43 PM   #13
Tech Elite
 
Trips's Avatar
 
Join Date: Aug 2001
Location: 360 Speedway
Posts: 2,251
Trader Rating: 16 (100%+)
Default

I just went back and reread the first post... A 100W soldering "gun" won't get the job done at all.

Get a good soldering IRON with as massive a tip as you can find. 45 watts will be enough as long as it gets over 800 degrees and has a big heavy chisel tip.

A GREAT iron for pack building is the Hakko 455. Not too expensive, massive tip, very hot.

Trips
__________________
MARSHAL!!
Trips is offline   Reply With Quote
Old 10-07-2001, 10:10 PM   #14
Tech Elite
 
mike_Webb's Avatar
 
Join Date: Aug 2001
Location: SOMEWHERE OVER THE RAINBOW
Posts: 3,128
Send a message via AIM to mike_Webb
Default

The Hakko 455 is a great iron. I have one and it gets really hot...so hot that I was not paying attention and brushed my arm against it once...once.... and within 30 seconds had a huge blister about 3 inches long on the side of my arm that got about half a inch tall. Did I mention that it hurt?

And on a side note....if you ever do get a blister like that, never pop it unless you can clean the blister out and cover it so nothing can get in it. I got a massive infection because it was the start of the race and while I was racing it popped and I did not cover it and raced for about 3 more hours.

Mike Webb
mike_Webb is offline   Reply With Quote
Old 10-07-2001, 10:37 PM   #15
Tech Elite
 
Join Date: Aug 2001
Posts: 2,583
Default

That is nasty Mr. Webb but I do like Hakko soldering irons.
Sydewynder is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Stick pack Building KDagh1 Electric On-Road 4 12-27-2007 07:38 PM
Charging 3pk battery pack (8 cell 2400mah Venom NIMH pack) mcgmark Electric On-Road 2 11-06-2006 08:57 AM
Battey Pack Building? Lextek Rookie Zone 2 03-21-2006 09:55 PM
Building your own receiver pack Darkseid Nitro On-Road 14 08-03-2005 01:17 PM
JR R-1 800mAh battery pack, charger cord [Tx & Rx pack], (8) 700mAh Nicads + cradle Tom G R/C Items: For Sale/Trade 2 08-17-2004 03:46 AM



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 11:36 PM.


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