JB Weld

[Engineer]

Originally posted by: Lizardman

TIG uses filler metal just like any other manual welding technique. Not sure what you are referencing there?
.

Now that I think of it, you're right but I guess I'm thinking of the bead of weld that MIG or stick welding produces vs the burned in (sunken) material of the tig. I know that the guys at work use far less material on a TIG weld than the wire MIG or the stick. They TIG small parts that can't have a bead of weld in the way of the parts (and they don't want to grind them down).

 

[lxskllr]

Originally posted by: NightDarker

I can just get U bolts at any generic hardware store/auto parts place, right? Gotta get a metal drill bit, too...

Yea, you can get them just about anywhere. Home Depot or Pep Boys should have them.

 

[Saint Nick]

I just called a welding place here in Omaha and they said I couldn't weld the aluminum to steel...so I guess U bolt it is!

 

[arcenite]

To answer the OP's question, JB weld is fantastic for things that you can't weld... like plastic.

 

[Engineer]

Originally posted by: NightDarker
I just called a welding place here in Omaha and they said I couldn't weld the aluminum to steel...so I guess U bolt it is!

LOL, I guess I didn't read enough (as usual ) to realize that one was aluminum and one the other was steel!

One of my co-workers walked up to a machine (we were building) a few years ago and touched a piece of metal on it...it fell off. Discovered that the builder didn't notice that the piece was steel but the plate was aluminum. Didn't stick! :laugh:

 

[JDub02]

Originally posted by: Engineer

Originally posted by: Lizardman

TIG uses filler metal just like any other manual welding technique. Not sure what you are referencing there?
.

Now that I think of it, you're right but I guess I'm thinking of the bead of weld that MIG or stick welding produces vs the burned in (sunken) material of the tig. I know that the guys at work use far less material on a TIG weld than the wire MIG or the stick. They TIG small parts that can't have a bead of weld in the way of the parts (and they don't want to grind them down).

TIG (along with oxy-acetylene) uses a separate filler wire, so you can use the torch with or without filler. MIG and stick welding use the filler as the torch.

 

[PlasmaBomb]

Originally posted by: NightDarker
Ahh...I need to brush up on my welding terms. I thought arc welding was the means of getting at stick, TIG, and MIG welding. YIKES.

I guess I better be calling a metal shop.

Stick, TIG and MIG are all arc welding...

Wikipedia

Arc welding uses a welding power supply to create an electric arc between an electrode and the base material to melt the metals at the welding point.

 

[PlasmaBomb]

Originally posted by: Nik

Originally posted by: Rubycon
JB Weld is epoxy. Its shear strength is about a tenth of bronze-silver braze repair is and even still weaker than TIG or stick welding when properly done. You might as well lay the bike on the ground if you plan on using epoxy to hold the kickstand on! :laugh:

Who's going to TIG weld moped parts? MIG weld, maybe. ARC, sure. I thought TIG was for BIG projects like train cars and sky rises. TIG joints are huge.

TIG welds aren't huge. You can TIG weld a 1mm plate if you want.

Example

Originally posted by: NightDarker
I just called a welding place here in Omaha and they said I couldn't weld the aluminum to steel...so I guess U bolt it is!

People should have pointed out you can't weld aluminium alloy to steel.

Edit:

Originally posted by: Engineer

Originally posted by: NightDarker
I just called a welding place here in Omaha and they said I couldn't weld the aluminum to steel...so I guess U bolt it is!

LOL, I guess I didn't read enough (as usual ) to realize that one was aluminum and one the other was steel!

One of my co-workers walked up to a machine (we were building) a few years ago and touched a piece of metal on it...it fell off. Discovered that the builder didn't notice that the piece was steel but the plate was aluminum. Didn't stick! :laugh:

Yup dissimilar metals = crap weld

 

[jemcam]

Originally posted by: NightDarker

Originally posted by: lxskllr

Originally posted by: NightDarker
Oh, for some reason I actually thought that there was some chemical reaction taking place that caused the metal to fuse together. I didn't know it was just a glue.

Also, performance exhaust got me about an extra 8mph out of my bike, increase the middle range power band, and lowered my gas mileage.

Cool. Have you done any throttle modifications?

Not yet...right now I really need to fix the GD brake shoes. They squeak and can't stop worth s$@%.

Eventually, I plan on getting a new cylinder and piston kit for the bike, as well as a new carburetor. That will help my moped reach speeds of about 55mph, maybe up to 60mph or even 65mph if I get a really big kit. But, this won't be for a while.

I could probably tune my bike the way it is now (run a little richer, and put on a higher flowering filter) and get an extra 3 or 4mph out of it.

Yeah, I think my priority would be brakes before I started riding a MOPED at 65 MPH with poor brakes. The question is why do you want to put that kind of money into a moped? This is on par with fixing up a Honda Civic, it's still a moped that you'll never get your money out of, and now it has no kickstand to boot.

 

[lokiju]

Drill holes and use U bolts?

 

[Saint Nick]

Originally posted by: jemcam

Originally posted by: NightDarker

Originally posted by: lxskllr

Originally posted by: NightDarker
Oh, for some reason I actually thought that there was some chemical reaction taking place that caused the metal to fuse together. I didn't know it was just a glue.

Also, performance exhaust got me about an extra 8mph out of my bike, increase the middle range power band, and lowered my gas mileage.

Cool. Have you done any throttle modifications?

Not yet...right now I really need to fix the GD brake shoes. They squeak and can't stop worth s$@%.

Eventually, I plan on getting a new cylinder and piston kit for the bike, as well as a new carburetor. That will help my moped reach speeds of about 55mph, maybe up to 60mph or even 65mph if I get a really big kit. But, this won't be for a while.

I could probably tune my bike the way it is now (run a little richer, and put on a higher flowering filter) and get an extra 3 or 4mph out of it.

Yeah, I think my priority would be brakes before I started riding a MOPED at 65 MPH with poor brakes. The question is why do you want to put that kind of money into a moped? This is on par with fixing up a Honda Civic, it's still a moped that you'll never get your money out of, and now it has no kickstand to boot.

Its just a fun hobby like anything else

 

[lxskllr]

Originally posted by: NightDarker

Its just a fun hobby like anything else

Yup. it's just like overclocking a computer. The hardcore overclockers don't get performance payback with exotic cooling, and other expense. It's fun just to do.

 

[Rubycon]

How long will it take a 50cc bike to reach 65 mph? I thought they went 35 tops?

 

[spidey07]

Originally posted by: Rubycon
How long will it take a 50cc bike to reach 65 mph? I thought they went 35 tops?

45-50 is nothing for a 50 cc bike.

 

[Rubycon]

Originally posted by: spidey07

Originally posted by: Rubycon
How long will it take a 50cc bike to reach 65 mph? I thought they went 35 tops?

45-50 is nothing for a 50 cc bike.

Every moped I've been on never did more than 35 mph. Slower uphill. I know a 50cc engine is capable of faster with right gearing/sprocket whatever. But these were Motobecane and Batavus bikes that you pedal to start.

 

[Engineer]

Originally posted by: spidey07

Originally posted by: Rubycon
How long will it take a 50cc bike to reach 65 mph? I thought they went 35 tops?

45-50 is nothing for a 50 cc bike going downhill.

 

[Lizardman]

Originally posted by: PlasmaBomb


People should have pointed out you can't weld aluminium alloy to steel.

See my earlier post.

Also on TIG vs MIG. The reason for the difference in weld bead size is usually due the fact that MIG is a semi-automatic welding process while TIG is a manual welding process. Semi-automatic meaning they have to actually set up the filler rod speeds as well as the current while welding a given metal. If not done correctly a larger amount of filler rod is deposited on the weld. If done properly a TIG weld should not look all that much different than MIG weld.

 

[Saint Nick]

Well, I tried using these U bolts. They didn't work as I wanted them to I guess after looking at the kickstand I can't tell if its actually aluminum or just steel with a zinc coating.

 

[Engineer]

Originally posted by: Lizardman

Originally posted by: PlasmaBomb


People should have pointed out you can't weld aluminium alloy to steel.

See my earlier post.

Also on TIG vs MIG. The reason for the difference in weld bead size is usually due the fact that MIG is a semi-automatic welding process while TIG is a manual welding process. Semi-automatic meaning they have to actually set up the filler rod speeds as well as the current while welding a given metal. If not done correctly a larger amount of filler rod is deposited on the weld. If done properly a TIG weld should not look all that much different than MIG weld.

The TIG welding that I have seen looks more like the two pieces of metal have been joined together (melted at the seam) with no bead. The MIG (and stick) welding have a flowing bead (depending on how good the welder is, lol ).

Oh, and while at it...I was right in that filler rod/wire doesn't have to be used (and I don't think we do at work on the fixtures that we weld).

Click me

TIG Welding Benefits

* Superior quality welds
* Welds can be made with or without filler metal
* Precise control of welding variables (heat)
* Free of spatter
* Low distortion

 

[iamwiz82]

It's great for emergencies. We used it to patch a hole in a friends transmission pan in a parking lot of a motel once. Used the sink to clean the pan before we put the JB Weld in, though. :laugh:

 

[Squisher]

Originally posted by: PlasmaBomb
People should have pointed out you can't weld aluminium alloy to steel.

In my 30+ years as a Die Maker never I saw anyone make the attempt, however I have heard that the Soviets had perfected the technology for use on one of their fighters back in the 70s or 80s.

 

[lxskllr]

Originally posted by: NightDarker
Well, I tried using these U bolts. They didn't work as I wanted them to I guess after looking at the kickstand I can't tell if its actually aluminum or just steel with a zinc coating.

I would suspect it's steel. Try a magnet on it and see what happens.

 

[Rubycon]

Originally posted by: Squisher

Originally posted by: PlasmaBomb
People should have pointed out you can't weld aluminium alloy to steel.

In my 30+ years as a Die Maker never I saw anyone make the attempt, however I have heard that the Soviets had perfected the technology for use on one of their fighters back in the 70s or 80s.

Steel and Aluminum can be fused together with explosives.

 

[episodic]

Plugged a hole in a pontiac leaking block with it once - held for 6 months

 

[Jeff7]

Originally posted by: PlasmaBomb
Yup dissimilar metals = crap weld

Depends on the metal, but yeah, it's not ideal.

An aluminum to steel weld though....the melting points are so different, I'd say you might as well try welding butter to steel. By the time you get the steel hot enough to melt, there won't be any aluminum anywhere near the weld point.
Just doing aluminum TIG welding is rough - it's picky stuff. Too cold, and, well, obviously it won't melt. But nudge up the current too much and it just melts like butter in a 5000W microwave.



And from what little I know, TIG welding can be done without a filler metal, but this is not the usual method I have seen.

Originally posted by: Rubycon

Originally posted by: Squisher

Originally posted by: PlasmaBomb
People should have pointed out you can't weld aluminium alloy to steel.

In my 30+ years as a Die Maker never I saw anyone make the attempt, however I have heard that the Soviets had perfected the technology for use on one of their fighters back in the 70s or 80s.

Steel and Aluminum can be fused together with explosives.

The first ATOT member to claim a Darwin Award in 2009: NightDarker. Oddly enough, his last moments made the night brighter.