Cracked swing-arm?

[Mike.Gayner]

Having taken the bike out for a good ride today I was cleaning it this afternoon and noticed a nice new crack in the swing arm. Fuck. Is this terminal for the swing arm? Or can it be welded? Is this ordinary fatigue, or has something extraordinary caused this? I suppose I'd better stay off the bike until this is sorted.

http://i.imgur.com/7DzM4EL.jpg

[kevfromcoro]

My mate had the same thing happen on his duc..
Motor dropped down, and tore all the vacuum lines off the motor.
He was a welder, and was able to get it to work and tig it up.
No more probs

[Rhys]

Seems a strange place to crack

[Crasherfromwayback]

Having taken the bike out for a good ride today I was cleaning it this afternoon and noticed a nice new crack in the swing arm. Fuck. Is this terminal for the swing arm? Or can it be welded? Is this ordinary fatigue, or has something extraordinary caused this? I suppose I'd better stay off the bike until this is sorted.

]

I'd still ride it. Just don't go too silly until it's sorted. And decent bike shop could tig that up for you.

[nzspokes]

I would be looking for a new one myself. Welding as a last resort.

[Mike.Gayner]

Seems a strange place to crack

My thought as well. I just had the chain done, any chance the mechanic has torqued the tits off the axle? I haven't touched it yet to find out....

[Crasherfromwayback]

I would be looking for a new one myself. Welding as a last resort.

Why do you say that? Have a look at the swing arm in my SR.

[Mike.Gayner]

I should mention that I work for the NZ Welding School (I just do accounts...) so I should be able to get someone skilled and experienced to look at it soon enough.

I'm pissed off having just bought the bike 2 or 3 weeks ago. I'm 95% sure it wasn't there last week.

[Crasherfromwayback]

I should mention that I work for the NZ Welding School (I just do accounts...) so I should be able to get someone skilled and experienced to look at it soon enough.

.

Piece of piss for any decent geezer mate.

[Mike.Gayner]

Piece of piss for any decent geezer mate.

Would you grind it out and lay a new bead, or just tig straight over the crack? It's going to look like shit anyway, isn't it? Not that the look matters much when compared with several hundred dollars for a new arm.

[Crasherfromwayback]

Would you grind it out and lay a new bead, or just tig straight over the crack? It's going to look like shit anyway, isn't it? Not that the look matters much when compared with several hundred dollars for a new arm.

They're prob a lil thin walled to be grinding a groove mate. Who gives a shit what it looks like. Give it that factory look!

[nzspokes]

Why do you say that? Have a look at the swing arm in my SR.

Swing arms on TM seem to go fairly cheap. Bike dependent of course. You may be able to get one for the cost of welding. But as he works for a welding company then he should be fine.

I would be checking the torque on that nut though.

[Crasherfromwayback]

I would be checking the torque on that nut though.

That'll have nothing to do with it unless there's spacers etc missing.

[ducatilover]

That'll have nothing to do with it unless there's spacers etc missing.

Shouldn't crack there regardless of spacers, you leave a spacer out and the swinger will pull in and bend further forward. And assuming it's a semfiddy teapot it should have a solid axle slider in the swingarm anyway.
I'd say it's just being a Suzuki

Welding it will be fine. Should be enough there to vee it a little and then polish out

[skippa1]

I would be looking for a new one myself. Welding as a last resort.

The factory sticks the whole frame together with weld, why wouldn't you weld it?