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Old 11-06-20 | 11:35 AM
  #21  
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masi61
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Joined: Oct 2005
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From: SW Ohio

Bikes: Puch Marco Polo, Saint Tropez, Masi Gran Criterium

Originally Posted by Moe Zhoost
I realize that you believe braking performance to be improved after polish; however this is just a perception that won't stand up to real testing. The fact is that metal surfaces are polished to reduce friction, and friction is what generates the braking force. There are plenty of studies that confirm this. Here's a quote from one:
Yeah, you might be right. I like the feel the way I do it for these particular polished rims. I’ve got them braking really well most of the time, not grabby but positive braking. I have Dura Ace 7700 dual pivots which are not as powerful as 7800’s. I have a bike with Dura Ace 7403 dual pivots (which I did a full rebuild on) and man they are some powerful rim brakes paired with ordinary Tektro aero brake levers.

I’m mot sure what to think about the 44 page scholarly article you provided. Looks like an interesting read. Not bike specific though so the takeaway for me is inconclusive. I got caught out in an absolute downpour last summer and I guess I shouldn’t be surprised that I had such a difficult time pulsing my brakes to squeegee them off. For now I’m gonna stick with my claim that these particular rims brake better in most conditions when freshly polished with Mother’s mag wheel polish. The grip with these pads; https://www.ebay.com/itm/193331590060 (inexpensive pads I have been using for the past 2 years) is enhanced a bit with no squeals or grabbiness. I forgot to mention that I do an intermediate step after (2 or 3) rounds of Mother ‘s mag wheel polish using Meguiar’s Cleaner Wax which concludes when my little paper towel squares aren’t so black any more. If I’m feeling like perfecting the shine a bit more still I use one round of Meguiar’s High Tech paste wax. These last 2 steps don’t seem to hurt the braking any and they seal the bare aluminum so that in a light rain, water beads up (for a while at least).
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