Been poking around the Colombian bike shops again, and I found another 28" Aluminium rim, a "GW" rim made in Medellin. This one is Westwood pattern only, good for either hub brakes or rod brakes. It is quite a bit heavier than the Ciclo Torres rim, weighing in at 750g, but it feels much sturdier. The extra material makes it cost more though, something like 20% more. It is also doesn't quite look as good; with the usual 28" tire, it looks like a small tire on a wide rim. This GW rim is 36 holes like the Ciclo Torres rim
Interesting notes, a Formula track hub will lace 4X on a Ciclo Torres rim, using 308mm spokes, 306-307mm spoke are probably more appropriate, but some careful filing and rim tape will cover the difference nicely.
As an aside, it is a pity that no one here has managed to make fat mountain bike tires for 635 rims, the mountain bike scene is getting pretty decent, and a home grown 29ner (30ier?) would be a good possibility.
Has anyone fitted 700c Surlys with 28" roadster rims and tires? If they fit, this can be beneficial to those who tour places where 700c is not easily available, at least if they use disc brakes.