Saint Nick

Lifer
Jan 21, 2005
17,722
6
81
I recently bought a moped and upgraded the exhaust on it to a performance exhaust. I had to take the kickstand off to use the exhaust, though. I bought a regular bicycle kickstand at Wal-Mart and was wondering how exactly JB Weld works. I've never cold-welded before (or arc-welded for that matter). I can't find any clever way to mount it up to the bike without welding it on.

I have a buddy with an arc-welder so I might just hit him up. Do you guys think JB Weld would work? One of the surfaces is a round beam about 1/2" in diameter that connects the footpegs together, and the other surface is the kickstand mounting plate. I think the kickstand is aluminum, but I'm not sure. No idea what the metal is connecting the footpegs. Its a 1983 bike, so I was thinking just steel.
 

SlowSpyder

Lifer
Jan 12, 2005
17,305
1,001
126
JB Weld is awesome for a quick fix. Not sure I'd try and permanently fix something, but it will probably hold.
 

TonyG

Platinum Member
Feb 12, 2000
2,021
2
81
Call your buddy with the arc welder up, as jb weld is just epoxy and it will not hold for what you want to do.
 

Rubycon

Madame President
Aug 10, 2005
17,768
485
126
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:
 

OUCaptain

Golden Member
Nov 21, 2007
1,522
0
0
First off. Performance exhaust on a moped..... LOL

JB weld does not actually weld metal. It's just a really tough epoxy. I seriously doubt it will work in your case. Go with the arc welder but be careful as I'm willing to bet the metal on your scooter will be rather thin and can easily burn through.
 

spaceman

Lifer
Dec 4, 2000
17,611
172
106
u mite need mity putty(not really).\or alumaloy(use MAP)
hpw bout drilling and bolting/??
 

Saint Nick

Lifer
Jan 21, 2005
17,722
6
81
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.

http://www.treatland.tv <- laugh, learn, love
 

lxskllr

No Lifer
Nov 30, 2004
58,541
8,822
126
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?

Edit:
JB Weld is better for patching holes than structural repair.
 

Engineer

Elite Member
Oct 9, 1999
39,230
701
126
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:

TIG welding can be incredibly difficult since you are not adding a filler metal to the weld. Stick, or preferably MIG welding, would be the way to go if available. As you pointed out, JB Weld might hold a few things together, but for a kickstand....er....no. :p
 

Saint Nick

Lifer
Jan 21, 2005
17,722
6
81
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.
 

Saint Nick

Lifer
Jan 21, 2005
17,722
6
81
Originally posted by: Engineer
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:

TIG welding can be incredibly difficult since you are not adding a filler metal to the weld. Stick, or preferably MIG welding, would be the way to go if available.

I think this guy knows how to do both, but I suppose I'm not really sure :confused:

I wonder if I took the whole jaunt down to a metal shop, they would do it for me. I can't think of any clever way of "bolting" it on. I might post pictures later and maybe ATOT can think of something cool.
 
May 13, 2009
12,333
612
126
Originally posted by: NightDarker
Originally posted by: Engineer
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:

TIG welding can be incredibly difficult since you are not adding a filler metal to the weld. Stick, or preferably MIG welding, would be the way to go if available.

I think this guy knows how to do both, but I suppose I'm not really sure :confused:

I wonder if I took the whole jaunt down to a metal shop, they would do it for me. I can't think of any clever way of "bolting" it on. I might post pictures later and maybe ATOT can think of something cool.

Thats what I would do. Take the whole thing to a metal shop and they would know alot better than you where and how to weld that thing and if its possible. Leave that stuff to a pro. You don't want to park your moped somewhere and come out to see it laid over.
 

Lizardman

Golden Member
Jul 23, 2001
1,990
0
0
Originally posted by: Engineer
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:

TIG welding can be incredibly difficult since you are not adding a filler metal to the weld. Stick, or preferably MIG welding, would be the way to go if available. As you pointed out, JB Weld might hold a few things together, but for a kickstand....er....no. :p

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

Since you think the kick stand (aluminum) and the moped frame (steel) are different material it may not be possible to weld them together using arc welding. If you can find out they are the same material than that is the way to go. TIG/MIG/Stick will all work equally well if that is the case.

Also I have used JB weld in the past with good results. I used it on a thermostat housing in my girlfriends Accent. The stock housing broke in half after I tried installing a cheap pepboys thermostat. I ended up JB welding it back together and it help for 3 months! Think about that ...driving every day 40 -80miles and all the heat and vibration from the engine. Think twice before you talk bad about gold ol' JB.

Jb weld might work for this case but just like arc welding preparation is the most important thing. Make sure you properly clean the surfaces and scuff them with a wire wheel or brush.
 

JDub02

Diamond Member
Sep 27, 2002
6,209
1
0
you do not receive your man card until you can fix everything with jb weld and duct tape
 

Saint Nick

Lifer
Jan 21, 2005
17,722
6
81
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.
 

lxskllr

No Lifer
Nov 30, 2004
58,541
8,822
126
Originally posted by: JDub02
you do not receive your man card until you can fix everything with jb weld and duct tape

And tie wire! Don't forget the tie wire!!
 

Nik

Lifer
Jun 5, 2006
16,101
2
56
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.
 

lxskllr

No Lifer
Nov 30, 2004
58,541
8,822
126
Originally posted by: Modelworks
drill + bolt will not work ?
Aluminum welding is not for the inexperienced.

I was think a Ubolt around the frame. It depends on what it looks like though.
 

Saint Nick

Lifer
Jan 21, 2005
17,722
6
81
Originally posted by: lxskllr
Originally posted by: Modelworks
drill + bolt will not work ?
Aluminum welding is not for the inexperienced.

I was think a Ubolt around the frame. It depends on what it looks like though.

A U-bolt is a killer idea...actually...I didn't think of that. It would work perfectly because the thing I want to attach the kickstand to is round!

So I could just get a couple of those guys and a metal drill bit to drill out some new holes in the kickstand and call it a day! NICE.


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

geno

Lifer
Dec 26, 1999
25,074
4
0
Originally posted by: OUCaptain
First off. Performance exhaust on a moped..... LOL

Hey, you laugh, but a friend of mine worked with a guy (this was in FL, so having a moped / scooter is common down there I guess) who put an exhaust and either worked / replaced the carb and the thing would do 75mph! This was on a 49cc scooter too, mind you :D