• Cheers @7ven. I'm rather pleased with the way it came out.

    I've got a bit behind on my updates on this project. I finished the course several weeks ago, and haven't yet covered Day 5. Day 5 was a short day as I wanted to get back to the Fens to do my club's cyclocross skills session - hopping on and off bikes while moving, what a daft idea - so I only had the morning to make a start on Frame 4. Frame 4 was supposed to be my bike for leaving in Basel, but that plan has been superseded somewhat by my impulse purchase of a Lynskey R470 disc frameset, so I'm going to have to find another excuse for building Frame 4.

    As I mentioned earlier, Frame 4 is going to be fillet-brazed with the usual mix of Spirit and Life tubing, a standard BSA68 BB shell and curvy double bend seat stays. Other than the double bend seat stays, the only unusual thing about the frame will be the integrated headset. I got some machined head tubes for integrated headsets from Solid BMX in the States. They only do two sizes, but the shorter one should work well for me. I decided to do an integrated headset because (1) it's a bit different (2) I'll be using a Ritchey Cyclocross fork which should match the OD of the headtube (3) the headtube would be stupidly short with an external headset and the cyclocross fork and (4) the gravel-lite bike I'm planning to make for @Cycliste will need a custom integrated headtube as it's going to be a weeny 85mm long even with internal bearings.

    The Solid BMX headtube is nicely machined, but it does live up to its name. It's pretty chunky. But then it is designed to be used on BMXs I suppose, so no surprise there.

    Anyway, on Day 5 I mitered the main tubes for the front triangle, tacked them, and did the fillet braze on the headtube/downtube junction. And then treated Geoff to a slap-up lunch, and buggered off. You can't see it in any detail in this pic, but I'm rather pleased with my fillet braze on this one. Definitely better than the brazing on Brommers Bike #2.

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