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Genius is great tubing..very lightweight. When talking to a few framebuilders in the past, they didn't recommend it for a heavier rider using it because it is quite thin.
Also, if it's going to be an every day street bike that's going to be constantly locked to stuff/ridden hard, you might want to reconsider since it's one of the easier frames to dent. My friend had a Samson Genius frame and he said it was a magnet for small dents..but he loved it still.
I believe Genius is 0.7 / 0.4/ 0.7 which is about the same as Kasei 017
Very light but not sure how I would feel about day-to-day street use.
JRatNW
Thoughts on this? How good is Columbus genius?