Author Topic: To weld or not to weld? that is the question!  (Read 5277 times)

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Offline Djfob

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To weld or not to weld? that is the question!
« on: June 18, 2013, 10:28:00 AM »
I have a rear hoop and two flat bars for seat mounts to be welded onto my 78 cb750k. Cheapest quote I've got is $200 to have it TIG. The whole bike I've rebuilt it myself, mechanically inclined but wouldn't mind learning to weld.

Since its not really structural parts I figured I could tackle it myself. Never welded in my life but from what I'm reading I can learn how to mig strong welds with 5-10 hours practice. Looking to purchase a Lincoln 180 mig. Can I get away with just flux or is gas recommended. On a bit of a budget.

Looking for opinions if I should leave this to a professional or finish the bike myself start to finish? I've been back and forth.
78 CB750k

Offline Xnavylfr

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Re: To weld or not to weld? that is the question!
« Reply #1 on: June 18, 2013, 10:35:39 AM »
Flux core will be fine  but of course gas is better. The gas makes for a much cleaner weld. I've welded all kinds of stuff with just flux core and it's still welded on there. I welded some short chains on the side of my MC trailer to act as TIE-DOWN extension and have never had a problem with them.  Have had 800LB BIKES tie with them and NO problemo!!!


Xnavylfr(CHUCK)

Offline 70CB750

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Re: To weld or not to weld? that is the question!
« Reply #2 on: June 18, 2013, 10:37:37 AM »
That Lincoln is a good choice and I would not be afraid to flux it only.  I have done it on my jeep frame, body, tractor implements, tractor itself, built two trailers etc.

I would suggest to get a welder, read up and start welding, you will see yourself if you have it good neough for the frame.

For$200 I would get a welder, you will be using it again and again and every learned skill is a good thing.
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Offline lucky

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Re: To weld or not to weld? that is the question!
« Reply #3 on: June 18, 2013, 10:42:43 AM »
Flux core will be fine  but of course gas is better. The gas makes for a much cleaner weld. I've welded all kinds of stuff with just flux core and it's still welded on there. I welded some short chains on the side of my MC trailer to act as TIE-DOWN extension and have never had a problem with them.  Have had 800LB BIKES tie with them and NO problemo!!!


Xnavylfr(CHUCK)

I hope those were not hardened steel chains.
Flux core welding (innersheild/FCAW) is not inferior in any way.
The light slag left behind can easily be brushed off with a wire brush.

Offline lucky

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Re: To weld or not to weld? that is the question!
« Reply #4 on: June 18, 2013, 10:47:48 AM »
I have a rear hoop and two flat bars for seat mounts to be welded onto my 78 cb750k. Cheapest quote I've got is $200 to have it TIG. The whole bike I've rebuilt it myself, mechanically inclined but wouldn't mind learning to weld.

Since its not really structural parts I figured I could tackle it myself. Never welded in my life but from what I'm reading I can learn how to mig strong welds with 5-10 hours practice. Looking to purchase a Lincoln 180 mig. Can I get away with just flux or is gas recommended. On a bit of a budget.

Looking for opinions if I should leave this to a professional or finish the bike myself start to finish? I've been back and forth.


Every part of a motorcycle frame is under stress. All the parts are important and have a function.

You CANNOT learn to weld in just a few hours!

Go to www.weldingweb.com for your welding questions.

Offline Vinhead1957

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Re: To weld or not to weld? that is the question!
« Reply #5 on: June 18, 2013, 10:50:09 AM »
I have the Lincoln and I enjoy welding with it.  Read and practice before.  Try different joints before. I would put a drain  hole on the underside of the loop and find a rod stock that would fit inside the tubing to provide alignment as well as reinforcement for the joint.

Offline madScientist

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Re: To weld or not to weld? that is the question!
« Reply #6 on: June 18, 2013, 11:03:37 AM »
Get some flat sheet or angle iron and practice drawing beads on it to get your technique set. Then do some butt joints since that's essentially what you'll be doing on your hoop.

I have a Hobart Handler 450 that I've been welding with for years. Did most of the work on my bike with flux core so you should be fine there. Plus setting up for gas can be expensive if you dont have cylinders handy for exchange.

Dont rush to welding up your bike. Take a few days and get your technique straight.

To clarify you can't learn to be a professional or intermediate welder in a few hours...however in a day or so you CAN put down competent welds that will hold fine....they probably wont be pretty though.
You CAN do great things...with enough beer.


78 cb750f
http://forums.sohc4.net/index.php?topic=113293.0
70 CL350 Street Tracker / Cafe
http://forums.sohc4.net/index.php?topic=125641.0
83 KZ1100ltd
76 GL1000
71 Kaw H2 (to be built)
77 cb750A (sold)
74 cb125s (sold)

Offline Djfob

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Re: To weld or not to weld? that is the question!
« Reply #7 on: June 18, 2013, 11:14:39 AM »
In no rush to finish the bike so I'm more then willing to put in whatever time I need to learn to weld properly. As long as it can be self taught with reading and research.
« Last Edit: June 18, 2013, 11:17:38 AM by Djfob »
78 CB750k

Offline Djfob

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Re: To weld or not to weld? that is the question!
« Reply #8 on: June 18, 2013, 11:16:38 AM »
I have the Lincoln and I enjoy welding with it.  Read and practice before.  Try different joints before. I would put a drain  hole on the underside of the loop and find a rod stock that would fit inside the tubing to provide alignment as well as reinforcement for the joint.

I've got frame slugs mocked up and fit tight
78 CB750k

Offline 70CB750

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Re: To weld or not to weld? that is the question!
« Reply #9 on: June 18, 2013, 11:27:59 AM »
Local college may be offering welding classes - something to consider too.  Helps with basics and also hands on different equipment and options.
Prokop
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I love it when parts come together.

Dorothy - my CB750
CB750K3F - The Red
Sidecar


CB900C

2006 KLR650

Offline Djfob

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Re: To weld or not to weld? that is the question!
« Reply #10 on: June 18, 2013, 11:40:13 AM »
Local college may be offering welding classes - something to consider too.  Helps with basics and also hands on different equipment and options.

Funny you mention that, was just looking at a course outline from a community college. $239 for 12 hour course but doesn't start till Oct. Think I'll enroll.
78 CB750k

Offline haredondo

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Re: To weld or not to weld? that is the question!
« Reply #11 on: June 18, 2013, 11:47:13 AM »
I say go for it. Welding is fun and it's a great skill to have!

Offline Nikkisixx

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Re: To weld or not to weld? that is the question!
« Reply #12 on: June 18, 2013, 12:03:19 PM »
Local college may be offering welding classes - something to consider too.  Helps with basics and also hands on different equipment and options.

Funny you mention that, was just looking at a course outline from a community college. $239 for 12 hour course but doesn't start till Oct. Think I'll enroll.

That is a great idea - you will have access to materials and equipment worth a lot more than $239.  In a lot of those courses you can bring in some of your own stuff so you might be able to weld your frame in class with really nice equipment and an instructor looking over your shoulder.   
It is a proven fact that modifying a SOHC Honda in any way will bring on the apocalypse.

Offline lucky

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Re: To weld or not to weld? that is the question!
« Reply #13 on: June 18, 2013, 12:27:49 PM »
Local college may be offering welding classes - something to consider too.  Helps with basics and also hands on different equipment and options.

Funny you mention that, was just looking at a course outline from a community college. $239 for 12 hour course but doesn't start till Oct. Think I'll enroll.

That class will last a lifetime and you will have the paper to prove it.
In beginning welding,one of the most important classes, you learn how to set up and turn oxy-actylene tanks on and off correctly. That can save your life.

Offline mono

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Re: To weld or not to weld? that is the question!
« Reply #14 on: June 18, 2013, 01:01:46 PM »
Local college may be offering welding classes - something to consider too.  Helps with basics and also hands on different equipment and options.

Funny you mention that, was just looking at a course outline from a community college. $239 for 12 hour course but doesn't start till Oct. Think I'll enroll.

That class will last a lifetime and you will have the paper to prove it.
In beginning welding,one of the most important classes, you learn how to set up and turn oxy-actylene tanks on and off correctly. That can save your life.

+1  if you have the money and time, those classes are great.  obviously you're going to learn way more hands-on from an experienced expert than you will from a book, and you'll have the advantage of learning the correct way 1st! :)    also i'm sure they provide plenty of test materials to weld on for practice.  maybe if you get good enough in the class they'd let you bring in the frame to weld the hoop onto.

Offline 754

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Re: To weld or not to weld? that is the question!
« Reply #15 on: June 18, 2013, 02:34:56 PM »
I have to disagree. That every frame part carries stress.. Ie helmet hooks,horn mounts, the steering damper mounts under the neck on some for dampers never offered by the factory..and there is more..
 One could safely say though that most of it deals with a lot of stresses..
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Offline kghost

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Re: To weld or not to weld? that is the question!
« Reply #16 on: June 18, 2013, 02:36:28 PM »
If you get a welder.....don't tell your friends.....


It's like owning a truck.....next you know people assume you are in the moving business
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Offline 754

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Re: To weld or not to weld? that is the question!
« Reply #17 on: June 18, 2013, 02:41:10 PM »
Do what I do..only tell your friends with cash or beer..that you got. Welder or lathe/mill...
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Powderman

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Re: To weld or not to weld? that is the question!
« Reply #18 on: June 18, 2013, 03:39:46 PM »
Our local tech college offers welding class that spans 4 nights at $80 per session. I'm going to take it.

Offline kghost

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Re: To weld or not to weld? that is the question!
« Reply #19 on: June 18, 2013, 03:41:46 PM »
Do what I do..only tell your friends with cash or beer..that you got. Welder or lathe/mill...

I've had problems with that.......

They show up with beer....then to be polite we have to drink one......

Then the welding looks like it was done by a 6 yr old with a crayon....
Stranger in a strange land

Offline Djfob

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Re: To weld or not to weld? that is the question!
« Reply #20 on: June 18, 2013, 04:01:49 PM »
Quote

I've had problems with that.......

They show up with beer....then to be polite we have to drink one......

Then the welding looks like it was done by a 6 yr old with a crayon....

I'm sure no one will be asking me to weld anything since my welds will look like that sober.
78 CB750k

Offline goofy3392

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Re: To weld or not to weld? that is the question!
« Reply #21 on: June 18, 2013, 04:13:04 PM »
I have a copy of haynes welding manual on pdf. I could send you a copy if you wanted to start reading up on the lingo.

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Offline Djfob

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Re: To weld or not to weld? that is the question!
« Reply #22 on: June 18, 2013, 04:26:35 PM »
I have a copy of haynes welding manual on pdf. I could send you a copy if you wanted to start reading up on the lingo.

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Much appreciated!

hongchea@yahoo.ca
78 CB750k

Offline goofy3392

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Re: To weld or not to weld? that is the question!
« Reply #23 on: June 18, 2013, 04:31:11 PM »
Np, ill send it early tomorrow morning, i work overnights. It's a decent manual, talks about oxy acetylene, mig, tig, stick welding and the types of joints and welds.

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1976 CB550

Offline kghost

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Re: To weld or not to weld? that is the question!
« Reply #24 on: June 18, 2013, 05:55:33 PM »
The miller site has some great info.

Also videos
Stranger in a strange land