I bought the Ciöcc last winter because:
1. It came with a home trainer which was what I was most interested in.
2. It had a Mavic Mektronic groupset which I was curious about.
I knew the frame had two cracks on both sides of the head tube. I thought it would be a good opportunity to practice aluminium TIG-welding and try to repair it. Great if it worked, if not, it wasn’t a big loss.
I was worried that with the forces coming from the fork under braking and on rough roads, the cracks would reappear. To reinforce the steerer, I cut two pieces of aluminium that I rolled to the correct diameter and positioned them at both ends of the steerer tube.
I positioned them so that the headset would still fit properly.
Then it was time to weld everything. I had difficulty in keeping the aluminum fusion bath clean. I later learnt from a frame builder that you are also supposed to contain inert gas inside the steerer tube. I will remember it for next time, but I doubt it will break now.
This is the result after a quick grinding. At this point I wanted to test the Mektronic so I left the welds in this state thinking I could always make it nicer and paint it later, after having ridden the bike and assessed the rigidity of the frame.