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I really liked all of your headtube conversions, if I ever run in a crushed headtube 90ties steel for cheap, I will be asking for a lot more info. I can get stuff brazed for cheap back at home in Croatia, so a donor frame would kick this off. What´s the best way to approach the brazing of a disk tab at a fairly standard rear triangle (i.e. position, reinforcement, homemade jig..)?
FredyCro-
For ISO it is basicly a piece of flat 5mm sheet of steel (or whatever you choose) with two holes placed in the right distance from hub axle.
Peter Verdones wiki has all the shimano measurements for this.
Re jig you just make your own, I have shared photos of mine before and I will not clutter this thread with anymore diy spam.
I can share some photos of my latest mod in the CP thread later.
Hulsroy
Yes. It was an easy way to hold the head tube in place while tagging it. I am only suggesting this to Sven though, as he seems capable.
There is of course some filing required. But you get mitres from an online generator based on tube sizes and angle. Then you cut and file until headtube is straight and in the preferred angle. That is where patience comes in