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Bouncing Around

     It has been a minute since I last posted, and well that is due to the fact I have not beeen up to much.  Recently I have been deep diving into replacing bearings on my bikes from BBs to wheel hubs.  I bought an I9 wheel press set years ago and well it is generic enough to help with other wheels.

    Why is the bearing replacement interesting?  Simple, I am buying generic bearings off  Amazon or other online vendors by their ISO number.  Here is an example, I looked up the wheel bearings on the Hunt Wheel site for my bearings.  Their website says I need a 6902-2RS bearing.  I did some digging and found a ceramic wheel bearing set for $19.  The replacement has gone well and wheels are rolling nicely. 

    Next, I took aim at my Phil Wood Eccentric BB.  It uses a 6805 bearing, I have ordered up a set and will install them to see if I get an improvement.  Phil Wood also has this handy bearing sheet.  This sheet is a great way to look up other bearings you may need.  Basically anyone can do this, keep it simple, three measurements matter.  The fist measurement you need is the inner diameter (ID), second is the Outer Diameter (OD), and lastly the width (W).  So a GXP bearing set, you may want to look for a 24ID x 37OD x 7W.  If you google that you will find a MR3724 will be suggested.  

      Currently I am researching a DUB bearing, and it is 29 x 41 x 7.  6806 bearing is close with a 30 x 42 x 7, but I am still searching for a better fit.  I also know what I am doing will be cringed at by LBS and OEMs.  Here is the simple truth, this allows you to solve supply issues you may face, and also reduce the cost of the bearing.  A lot of times, design engineers need to keep costs down, so they will use standardized items like bearings to keep costs down.  Usually the cost savings I am seeing more than 50% for a simple replacement and if I upgrade to a ceramic or angular bearing, I am saving almost 75%.  

    Life can be cheaper if you are willing to do some research and dig into areas.  This was a boredom issue I had, and now I am researching other items as well to see if I can save even more on replacement items on my bikes.


Cheers and Godspeed

Dave

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