Yes, lots of people have singlicized TA cranks. Here's mine. I did not change the BB, and the chain line is not perfect with the SA IGH, but it's close enough. The Q factor is still ridiculously low anyway, like 135mm.



You can find yourself a large outer ring (at least several teeth larger than your desired single ring, which would be the inner ring) and mill down the teeth, turning it into a chain guard. I've seen this done to TA cranks and it works very nicely!