welding on a motor cycle frame

[ryanjones2150]

So I know diddly squat about motorcycles other than they have fewer wheels than drag cars and when people wreck them they generally get hurt pretty bad.

A friend of mine just got another dirt bike to fix up and started stripping it down for rebuild. He found a hole punch into a spot on the frame where a precious rider had laid it down on a rock or something. The hole is big enough to stick your finger in but has no other damage. He asked if I can fill in that hole and smooth it out nicely, then send it off for powder coating.

The question....any problem welding on a motorcycle frame? It's not some sort of exotic alloy steel or anything like that?

Gracias boys.

[H80N]

PICS of the damaged area...??

brand/model/year of scooter ???

ferrous or aluminum...??

[MAC702]

You are PROBABLY okay, but it should come as no surprise that we really need a lot more information.

[ryanjones2150]

Ya, figured. When it gets delivered at my shop for repair I'll update. About all I know about it at this point is that is a dirt bike frame and it has a hole in it.

[H80N]

Ya, figured. When it gets delivered at my shop for repair I'll update. About all I know about it at this point is that is a dirt bike frame and it has a hole in it.

look real close for cracks....&... don't be surprised if you find a bunch

UV Dye Check like Zyglo for cracks.. would be nice

https://www.youtube.com/watch?v=1cl2ULh0_ss

https://www.youtube.com/results?sear...etrant+testing

[ryanjones2150]

Excellent suggestion. I'll plan on doing that.

[H80N]

DirtBikes..... get double hammered..... like combat duty with the devil lighting up their Azz..and gaining..........

most are overbuilt.... ...................but..........

[ryanjones2150]

A crappy picture I'm sure, but it's just above where the foot rest is on the right side of the frame. Looks like some rust there, so it's probably steel.

[Lostone]

It's very possible that a drain hole it's hard to tell from the picture. Even more so if it's down by the foot peg which would be the lowest part of the frame

[H80N]

A crappy picture I'm sure, but it's just above where the foot rest is on the right side of the frame. Looks like some rust there, so it's probably steel.

does not look too bad...... some flavor of steel.... probably high strength like Docol R8

.... not much rust in TX

better shape than I expected...........

TIG it............ ER80-S2.................. .... or 2nd choice ER70-S2..

..

[ryanjones2150]

The foot rest would be directly below this about 8 inches I guess. It's on the vertical part and facing forward. <br />
<br />
I have some er80sd2 that I use on chromoly roll cage jobs, that should handle it!

[H80N]

The foot rest would be directly below this about 8 inches I guess. It's on the vertical part and facing forward. <br />
<br />
I have some er80sd2 that I use on chromoly roll cage jobs, that should handle it!

That's the stuff.................

[H80N]

How did that work out...??...................

[ryanjones2150]

Just arrived earlier today. The hole is actually smaller than it looks, so it shouldn't be a problem. There is a fairly nice dent on the bottom side, about the size of your thumb and maybe 4 or 5mm deep. Customer asked me if I could fill it in and grind it flat for cosmetic purposes. I'm thinking about maybe building it up with silicon bronze. What say you?

[MAC702]

Sounds easy enough for solid-wire GMAW. But I'm also not experienced with Si-bronze to ponder why it might be better.