Originally Posted by comprex
What you've got already isn't very deep for a bend, and is pretty close in shape to what used to be called a 'Modolo bend' where the mid section above the true ends is flattish in shape. (I think the patent is expired so anyone can make those now).
1) Do NOT assume that something called 'Ergo' will be comfortable (or more comfortable than any of the other sixteen dozen bar shapes in assorted colours that are currently available) for you. That designation ('Ergo') was invented almost 20 years ago to contrast with really, really deep bends that were shaped like Us (and fitted people with small hands very well).
You can make U bars into a mock-Ergo shape by taking a piece of plastic pipe or bamboo and slicing it half lengthwise, fitting each half into the Us of the bend, taping it down with utility tape, then wrapping your bar tape over it.
It's what we with large hands used to do before 'Ergos', it's cheap, and it could give you some additional feel.
2) Careful with the whole carbon bar thing. Make sure your stem will fit it without crushing it or leaving it loose (just as bad, really).
3) You're a guy with fairly wide shoulders.
Going to 42cm without extending the stem forward may do funny things to your bike position including restricting your breathing a bit or making you sit more upright.
You stalking me or something?!
Last summer when I bought the bike I kind of noticed my arms felt stretched outwards, but I quickly got used to the feeling. This spring my shop told me to come in, as we had never finished my fitting. He dropped a spacer in my headset, bumped my seat up and re-adjusted my cleats (one had loosened and I tightened it up skewed). This bike is basically made for me.
He mentioned the bars were a little wide @44cm (center to center) and the a 42cm might feel a little better. I think now I might feel it more just because the thought is in my head! I'm assuming that if he thought the stem length would need to be changed he would have mentioned it. Essentially he told me no rush, but if I ever upgraded a 42cm bar would likely work better.
I'm fully aware that my ergo probably isn't your ergo, but personally that shape looks damn painful. i am kind of adrift in all these designs right now, and trying before you buy seems virtually impossible, I can't just jump on a bike where everything else isn't fit me and expect to evaluate the bars...
I've got large palms but relatively short, muscular fingers, so I'm not sure I really fall into the large hands category.
If I've got a 31.8mm stem, why would having a carbon bar cause fit issues? Do the bars vary that much brand to brand?