Frame Crack

[Benno]

Hi,

I had the unpleasant discovery washing the bike today. I've been passively chasing an unusual vibration. I've checked wheel bearings, looked for dry link, tight spot in my chain, even cleaned the rivets in my floating discs for free movement. I was not expecting this.

Anyone had a frame crack here? I've owned the bike from new, it hasn't had a hit.

Ben.

[Eric GSX1400K3]

Wow, no, first ive seen that happen there.  Sorry for your troubles.  At least these frames can be welded relatively easily as they're carbon steel   issue is probably most bits have to come off so that you don't pass stray welding current through them (will fry electrical parts and damage bearings)

[KiwiCol]

Wow is right!!    Never seen that.  My mind just keeps asking how?   

Are you allowed to weld structural bits?  Think any frame welds need to be certified.

[Hooli]

That's an "oh bugger" moment!

I've never heard of the frame cracking on these bikes before.

[grog]

Benno, that is a rarity.Doesnt help you but,not sure how to fix.Obviously welded but is that legal? Hiding the weld also a concern.Im sure can be worked out🤞

[Benno]

I've put the bike in the naughty corner. Tomorrow I'll check the removable section opposite. I'm wondering if it was loose for example if that placed a lot of stress on the down tube that failed 🤷�♂️.

[Mick_J]

Wow, never seen anything like that before, it looks like it just cracked suddenly rather than a slow working progression.  I think that once the engine is out you will be able to get a good strong weld done.

[grog]

Benno, I'm actually thinking it's an insurance claim. No new frames available, the cost to swap if there was. Maybe a query to your states road authority to check if can be welded etc. I'd be devastated if was me. At least no failure which caused you to crash👏

[Eric GSX1400K3]

Yeah good point, may need an engineers certificate for any structural welding done on the frame

[Barbastro K6]

I assume that whoever does the welding will be able to certify it in writing

[Hooli]

I've put the bike in the naughty corner. Tomorrow I'll check the removable section opposite. I'm wondering if it was loose for example if that placed a lot of stress on the down tube that failed 🤷�♂️.

That was my thoughts about the removable section too.

[Barbastro K6]

nowadays they do wonders by welding.
Before starting to disassemble, there is nothing better to listen to who is going to do the work.