Description For the first time, NEW Dura-Ace employs a front and rear specific system that is more powerful and lighter than the original Dual Pivot design.
Summary: I finally upgraded my 20 year-old Dura Ace 7402 calipers to the 7800 model. They are lighter than the old single-pivots, and although they are a little fussy to set up, once dialed in, the performance is astonishing. In, fact, it is quite easy to lock up the rear wheel if you are not careful, due to the awesome stopping power.
Be sure to grease all the bolts upon installation, especially the tiny brake pad retention bolts, and don't overtighten the brake shoe fixing bolts, lest you crack the thin concave toe-in washers, which are essential for mounting the brake shoes.
Strengths: Awesome stopping power
light weight
good looks
easy spring tension adjustment
Weaknesses: toe-in adjustment tricky to set up
need teeny-tiny 2mm allen key to change brake pads
Similar Products Used: Shimano BR-7402,7403, 6400, 1050
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Summary: Probably the best brakes ever. Interested to see how they will compare against the 7900's I'm getting shortly. I managed to buy a 2nd set to put on my 7700-equipped older bike. Smart move.
Strengths: 1. Stopping power
2. Attractive
3. One-touch barrel adjuster
4. Long pad life
Weaknesses: 1. Looks like a nightmare to rebuild
2. Difficult to change pads
Similar Products Used: 7403, 7700, Campy Nuovo, Campy Super (vintage)
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Bike Setup: Klein Quantum. Mavic SSC/SL wheels. Mix of campy and shimano components.
Summary: I can not believe the improvement in stopping since switching to these brakes. I replaced a vintage set of Suntour Superbe Pro's that I had held on to for too long for sentimental reasons. My least favorite 15 percent downhill has now become my favorite, allowing me to confidently spin up to speed and quickly bleed it back off heading into the corners. I replaced the stock pads with Kool Stop Salmon's, and surprisingly I think the stock Shimano pads are actually better. In any case the Kool Stops are at best over-rated.
Strengths: Strong braking. Light weight. Easy to install and adjust.
Weaknesses: None so far.
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Summary: Not a lot to say, its a brake, they aren't that complicated. Great stopping power, light weight. severely limited tire options. If you want the name... its a very effective product. If you don't care about the name, ultegra worked almsot exactly the same and I had less clearance issues with the ultegra.
Strengths: Like i said in the summary, light weight great stopping power.
Weaknesses: Very narrow clearence for the tire. With the caliper open, a 23mm tire can be force in and out without much difficulty but i can't run a 25 on it. Not as easily dismantled as some other brakes, so overhauls can be difficult. Probably easier to just throw it in the parts cleaner or spray it down with triflow rather than rebuilding it.
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