I have been looking at just that,,,I have a pair of Weinman concave, 700c rims w tires that would be real nice on my 80s' Raleigh Mountain tour steel framed beaste
The major problem that I see, is that the distance from the axle to the outer edge of the rim(no disc brakes) is an inch and a half or so more,,That will require moving the brakes up that much...There is enough room for the wheel , but moving the brakes looks like more, than is easily done....I will keep an eye on this thread to see what the experts have to say...
Bud