Bar chat time...
Most folks like a sweep in the 47 to 57 degree range on their bars. The CR bend would fall into this category. Most folks like a 90 to 110mm rise, with taller folks going for riser extensions, or bars with as much as 120mm rise.
One of the most popular "joe average" bars for Pro Taper is the "Windham RM Mid" which has the same width as their CR high, 4mm taller and 6mm less sweep at 800, 99, 54... vs. the CR high at 800, 95, 60 mm.
One of the most popular bars for Fasst Co. and their "Flexx bars" is 12 degree (54mm sweep) moto and enduro bar with multiple rise and width options.
Optimal rise is a function of your height, inseam, arm length and seat/bar/peg relationship.
A good example of this is you love your bars but your pegs are too high... so you get some Fastways or other peg that has a "low-boy" position.
Now your bars are too tall (yes, bars can be
too tall) and you love your pegs... but your bars suck. Choices choices.
Optimal width is just a hacksaw away from too wide. Measure twice, cut once.
Optimal sweep is what your wrists are "happy" with. Not many riders like a sweep angle greater than 60mm as it causes your hands to rotate outward and put undue lateral stress on your wrist joints... which in turn can cause numbness in the hands and cramping in the arms.
There is no "best sweep" for all however, as the neutral angle of the hand can vary from individual to individual.
40mm is about the least sweep I've seen on dirt bike bars, while 62mm is about the most.
"CR Bend" can vary a bit from maker to maker... sweep angles, depending on what "CR Bend" can run from 53 to 60mm.
For me, an old guy with hands and wrists that have been broken more times than I can recall, the sweep angle is my number one priority, followed by rise.
I can live with too much or not enough rise, but I can't live with too much sweep angle... it has to be no more than 53/54mm.
The greater the sweep past that figure, the sooner my hands go numb and dumb.
New dirt riders make the mistake of getting too tall a bar... thinking that when they stand, they're suppose to be able to stand straight up with no bend in their bodies.
This is OK if your a old guy or a cruiser as it can be the most comfortable, but if your an aggressive rider, you want some bend in your knees, waist and arms, and too tall a bar will screw up a
"elbows out, balls to the walls agro-attack", riding position.
Once you find a bar bend that suits you, you tend to stick with it. I've been using a Pro Taper Windham or CR type bend with an 800-806mm width, 52-54mm sweep and 95 to 105mm rise (a little bike dependent) for years and years.
They fit my body, fit my riding style and work on anything I put them on... but, they may not be the best bar for you.
C