I just bought a set, I don’t know about the resonant frequency / dampening - motorcycle technology. But seems the dead weight suspended in rubber dulls the buzz to almost nothing , they worked for me. Any other reports
http://www.bontrager.com/Road/Parts_and_Accessories/Handlebar_Accessories/5882.php
I have heard good things, but it has never really been an issue for me on my road bike. Might be worthwhile in the VisionTech aluminum base bars, though.
I have them too. They do actually do something. Pretty cool.
They really shine on wash board / brick type roads , that buzz that feels like all the bolts are backing out ,gone . I don’t have much mileage on them yet , I like what I feel.
What’s the difference between the brass and alu models, other than $10? Intuitively I would think that the brass ones are heavier… Does that make them more effective?
It seems the aluminum model is more common, most reviews have them on road bikes. The sales person did not give me an explanation. I am guessing maybe mountain bikes ?
For the post below, they would work even better with lead or depleted uranium. Ya think.
In theory, this method should work better with a heavier weight. If the inserts are the same size, then the aluminum will be lighter, since it is a less dense metal than brass.
A typical TT bike setup, with brake levers in one set of bars and shift levers in the other, has no good place to put these things. A method that I use is to simply replace the tape with a set of black foam handlebar covers. This provides excellent excellent isolation from vibration, at the cost of style. I only seem to find them in black these days. Years ago they were available in a variety of colors. Spenco used to market a set that were closed cell neoprene with colored lycra covers; those were my favorites. I still have a 15-year-old set on our tandem, though the lycra is sagging.