Cracked swinging arm

[Bob]

Anyone got a pic of where they crack, I'm not sure if mine is scratched or cracked

[Bob]

This is it

[RickC]

Hi Bob,
I would say that both marks are from a scratch or small amount of corrosion in the grain either way the fact that they are running horizontal to the swing arm they should not catastrophically fail as would a crack in the vertical plane.

Cheers,
Rick

[GSXKING]

Are there any symptoms @RickC ? I.E. what brought it to your attention ? 

[seth]

@Speedy1959 had pictures
His cracked around the bearing rather than where the marks are on your swingarm @Bob .
I think there was a thread here and I'll add the link if I can find it .


@Bob here's the link with pictures
http://gsx1400owners.org/forum/index.php?topic=2412.0

[Bob]

Cheers Seth it was after you saying last, I night thought better have a closer look, it's not like speedys so all is good.

[Speedy1959]

Speedys isnt like Speedys any more since he bought a replacement swing arm from a kind forum member..

[seth]

Indeed and in a Lovely shade of black

[RickC]

Are there any symptoms @RickC ? I.E. what brought it to your attention ? 

Hi Chris,
I don't have a cracked swingarm, Just going off Bob's picture - I thought he was talking about the red circled area which would give plenty of warning before it failed with deformation being evident long before a break, the yellow circled area could also be a crack but I suspect that it is just where the coating has not taken over a dirty weld.
Cheers,
Rick

[Bob]

Hey Rick, it was the top red circle area I was talking about, the yellow circle is just mank, crud, dirt from it sitting about uncleaned

[RickC]

Hi Bob,
That looks like a mark in the grain of the aluminium, It's not where I would expect to see a crack and if it was would get a lot worse before giving concern.

A crack in the vertical plane runs the risk of a swingarm snapping, a crack in the horizontal plane still has the strength of the aluminium above and below it and would normally deform before total failure.

Cheers,
Rick