Yes that can certainly be repaired. A decent welder will grind out the crack (ouch!) and round it off at either end to make sure it doesn't spread further. Then it can be mig/tig welded back together and the weld can be dressed back to match up flush with your original finish.
The jubilee hose clip is a nice idea, but it won't stop the chainstay from bending itself in two sadly :(
I would suggest you strip the bike down so you've just got the frame handy, then call in on a local fabrications workshop and have a chat with them about it. If you're not happy with the sound of them take it elsewhere and get the second opinion...
Yes that can certainly be repaired. A decent welder will grind out the crack (ouch!) and round it off at either end to make sure it doesn't spread further. Then it can be mig/tig welded back together and the weld can be dressed back to match up flush with your original finish.
The jubilee hose clip is a nice idea, but it won't stop the chainstay from bending itself in two sadly :(
I would suggest you strip the bike down so you've just got the frame handy, then call in on a local fabrications workshop and have a chat with them about it. If you're not happy with the sound of them take it elsewhere and get the second opinion...