"Are you serious?"
Tell Paul Curley (umpteen time Nat Champ), Pat Gellineau (former small country - Trinidad? - Olympic team, also multi Nat Champ) that their bar ends are dangerous. They're in their 50s and regularly hand Cat 3s half their age their derrières on a plate. And that's after winning a Masters race or two earlier in the day.
Bar ends have fallen out of favor with the advent of the brake-shifter integrated lever, but before the whole STI/Ergo thing, "crit specialists" were the only ones using them. The rest of the racers pooh-poohed them as being a bit too, well, obsessive.
The new brake-shift levers (or "brifters" as they're sometimes called) make it easy to have your brakes close at hand while you're shifting. A typical anti-bar-end argument is that this wouldn't be the case with bar ends - shifting would prevent you from braking and braking would prevent you from shifting.
This warning simply doesn't fly when you're dealing with properly mounted bar ends. I agree that having your hands near brakes is pretty important during a race, and I typically spend most of my time (when at/near the front) on the drops, the only place from which you can brake 100% effectively.
However, a properly set up bar end shifter bike will allow you to have a finger on the brake lever and a pinkie on the shift lever at the same time, even with medium size hands. I know because I raced with a bar end for 8-10 years or so.
I never used a left bar end shifter (for the front) because in virtually all crit races shifting the front is not as critical, and since it takes a while to shift the chain from one chainring to another anyway, it's not as critical to have the shifter at your fingertips. Look at the various riders that use a left downtube shifter with a right shift-brake lever.
Proper set up is critical in order to use bar ends correctly, but that's the case for anything that has to do with ergonomics and/or fit. Slapping a set of bar ends onto any drop bar is pretty careless and irresponsible. For virtually the whole population, doing so will prevent the rider from both braking and shifting without moving their hands. This is not desirable because a rider may suddenly need to brake when they're shifting. If they can't, they may crash or cause a crash, neither a desirable action.
You should probably use an aluminum bar since you'll have to cut it down significantly. I cut approx 3" off the right side and about an inch less on the left since I used downtube left shifters. In this age you may not have the option of using a left downtube shifter, in which case both sides should be even. On the right side I'd cut about 1" into the curve of the bar.
My preferred crit bars were mainly Cinelli 65-40s, 65-42s, and the Gimondi bend 3ttt. Curiously enough, they were all considered "crit bend bars". Imagine that.
I cut the bars down so much I regularly mix them up with my old bull horn bars when I dug through my box o'bars.
The extra cut on the right side allows the shifter to be squarely under the heel of my palm when I have a finger on the brake lever. That's how I figure out where to cut - grab the bars on the bike, put a finger on the brake lever, and mark where the heel of your hand sits. Then subtract the length of the shifter mount/body thing and cut there.
For the left side just cut so the heel of your palm has some place to sit. Since the shifter mount/body is about an inch long, the left bar ends up about an inch longer. Once the shifter is mounted, both sides are "equal" in length.
You lose the flat part of the drops (the bit that sticks straight back) but that spot is a dead spot anyway. You can't brake, you can't shift (with any system except improperly mounted bar ends), so get rid of it. As a bonus you'll virtually eliminate the chance of hitting said end of bar with your knee.
With Shimano bar ends it's better if you mod your shifter so the mounting body sits upside down in the bar (i.e. it points up, not down - to do this you swap the left and right mounting bodies and drill out the hole or something). This way you can use your pinkie for more of your shifts since the shifter is closer to said pinkie. It happens to stick down less when you're in the smaller cogs. However, in fairness, I don't think either of the racers I named run unusual shifters. One uses an old Suntour shifter, the other I think uses standard Shimano shifters.
Reversing the mounting body is not required on Suntour bar ends since the bolt holding the shifter is in line with the bar center, not 1-1.5 cm below the centerline like Shimano.
You'll also have to sacrifice the "jacked lever" and "jacked bar" position that seems to be in favor nowadays. Such bar and brake lever setups require you to sacrifice rideability in the drop position because they are only effective when on the hoods. Since bar ends require riding in the drops a lot, you won't want to sacrifice being able to brake or shift from the drops.
Properly mounted, a bar end shifter would work great even in this day and age of the brifter.
The only thing you have to think about?
Where to put your left (downtube) shifter.
The only thing you have to think about?
Where to put your left (downtube) shifter.
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