Classic British SparesKlempf British PartsBaxter CycleBritBike Sponsor SteadfastCyclesSRM EngineeringLucas Classic MotorcycleHepolite PistonsIndustrial tec supply

Upgrade your membership to: Premium Membership | Gold Membership | Life Membership | Vendor Membership | Site Sponsor Membership
Welcome to BritBike Forum!
Britbike forum logo
Member Spotlight
JD
JD
Maryland
Posts: 1,991
Joined: January 2006
ShoutChat
Comment Guidelines: Do post respectful and insightful comments. Don't flame, hate, spam.
Search eBay for motorcycle parts in following countries
Australia, Canada, France, Holland, Italy, United Kingdom, USA
Previous Thread
Next Thread
Print Thread
#802205 03/21/20 7:37 pm
Joined: Jun 2017
Posts: 155
Likes: 9
S
Britbike forum member
OP Offline
Britbike forum member
S
Joined: Jun 2017
Posts: 155
Likes: 9
I do not enjoy electrical work but this task must be faced when rehabilitating an old beater. My current project ('55 BSA A10 Gold Flash) will require installation of a new harness and renovation of existing switches (dimmer with soldered leads). My question is; what is the best tool for soldering and unsoldering on a 6 volt system (relatively heavy wires) ? Gun or small iron ? What wattage ? Any particular brands to pick or avoid. Any guidance is appreciated.


Laurence Luce
Support Your #1 BritBike Forum!

Check out British motorcycles for sale: British Motorcycles on e-Bay UK, British motorcycles on e-Bay North America
Joined: Jun 2019
Posts: 125
Likes: 3
M
Britbike forum member
Offline
Britbike forum member
M
Joined: Jun 2019
Posts: 125
Likes: 3
For most automotive, motorcycle, and aircraft jobs I use a good (antique) solder gun. Little to nothing on these applications is fine detail work warranting a bench top soldering iron. If we were discussing component level circuit board repair, my answer would be different.

Joined: May 2010
Posts: 62
Likes: 2
L
brokesinceacquir
Offline
brokesinceacquir
L
Joined: May 2010
Posts: 62
Likes: 2
I prefer crimping rather than soldering, but when I must solder, I like a low wattage 20-30 watt Weller brand with Weller pretinned tip. They transfer heat well and only put solder where you want it, and stay clean with a wet sponge wipe. Solder doesn't make for a strong wire strength because it causes the multistrand wire to break after a few bendings, that is why they recommend a crimp. sometimes I solder the bullets with a very fine solder just a tiny bit through the hole on the end, but it doesn't reach the wire side, If there is a strain relief crimp, I put a little solder past the crimp body near the business end of the connector to assure it wont pull out. imho


Lyle '68 BSA B44VS

2 members like this: Hermit, gavin eisler
Joined: Jun 2017
Posts: 155
Likes: 9
S
Britbike forum member
OP Offline
Britbike forum member
S
Joined: Jun 2017
Posts: 155
Likes: 9
I had a 30 watt iron that died. tI did not supply enough heat to solder heavy wire into a brass fitting like a switch. I guess a 125 watt gun may be the way to go. Thanks for the advise.


Laurence Luce
Joined: Jun 2017
Posts: 155
Likes: 9
S
Britbike forum member
OP Offline
Britbike forum member
S
Joined: Jun 2017
Posts: 155
Likes: 9
I had a 30 watt iron that died. tI did not supply enough heat to solder heavy wire into a brass fitting like a switch. I guess a 125 watt gun may be the way to go. Thanks for the advise.


Laurence Luce
Joined: Aug 2012
Posts: 1,039
Likes: 57
Britbike forum member
Offline
Britbike forum member
Joined: Aug 2012
Posts: 1,039
Likes: 57
Originally Posted by slow learner
I had a 30 watt iron that died. tI did not supply enough heat to solder heavy wire into a brass fitting like a switch. I guess a 125 watt gun may be the way to go. Thanks for the advise.
125 watt is too high. Hard to control for small jobs. As previously stated 20 to 30 watt is fine.


Bill
1974 Norton Commando
1966 Lightning
1965 Lightning Rocket
1966 Norton Atlas
1967 Norton Atlas
1948 Panhead
Beach #802326 03/22/20 5:33 pm
Joined: Nov 2011
Posts: 7,002
Likes: 334
Britbike forum member
Offline
Britbike forum member
Joined: Nov 2011
Posts: 7,002
Likes: 334
Originally Posted by Beach
[quote=slow learner]125 watt is too high. Hard to control for small jobs. As previously stated 20 to 30 watt is fine.
When I use a soldering gun on motorcycle wiring the one I use has a dual range of 40/100 Watts. Although 40 Watts if fine for most things, the 100 Watt setting often is quite useful.

Joined: Oct 2008
Posts: 7,104
Likes: 122
Britbike forum member
Offline
Britbike forum member
Joined: Oct 2008
Posts: 7,104
Likes: 122
I find that my Weller WLC 100 soldering station is up to most tasks with the chisel tip. Variable temperature deals with varying jobs. The only time I use it at full power is when working outdoors in cool weather. Other tips are available for more delicate work.


Knowledge speaks. Wisdom listens.

72 T120V cafe project "Mr. Jim"
72 T150V "Wotan"
92 BMW K100rs "Gustav"
Joined: May 2004
Posts: 4,821
Likes: 72
B
Britbike forum member
Offline
Britbike forum member
B
Joined: May 2004
Posts: 4,821
Likes: 72
And add 2 pieces of heat shrink to the joint to increase the mechanical strenght of the joint. This appies to both solder & crimp joints.
I fix mowers and it is very common to have a wire broken at the terminal creting a random open circuit.
The pices should be of different lengths and the heat shrink ideally would be the glue type .
Three would be even better but tends to get bulky.


Bike Beesa
Trevor
Joined: Feb 2006
Posts: 935
Likes: 2
G
Britbike forum member
Offline
Britbike forum member
G
Joined: Feb 2006
Posts: 935
Likes: 2
....and a small pair of vice grips attached gently to the wire acts as a heat soak and a handle. It helps prevent heat travelling up the wire, softening the insulation and shrinking the heat shrink before you get the chance to slide it into place.


'51 C11 in a '54 C10L frame. Back on the road...
'70 Triumph Trophy 500. Next on the bench for a refresh!
'72 Triumph Tiger 650. Back on the road...

Moderated by  Jon W. Whitley 

Link Copied to Clipboard
Job CycleBritish Cycle SupplyMorries PlaceKlempf British PartsPodtronicVintage MagazineBSA Unit SinglesBritBike SponsorBritish Tools & FastenersBritBike SponsorBritBike Sponsor






© 1996-2021 britbike.com
Powered by UBB.threads™ PHP Forum Software 7.7.5