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Old May 21st, 2019, 04:50 AM   #1
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Joined: Sep 2017
From: Lansing Mi
Posts: 223

I Ride: 2013 hypermotard/hyperstrada, 2005 zx6r, drz125, crf50 crf70
Ceramic bearings pivot shifter mod

Screwing around with my highly modified Chinese shift lever. I wanted to eliminate any and all side to side play and twisting play so I started searching for a bearing that would fit instead of the bushing. The hole is 15mm. The bearings I found are ceramic with an outer diameter of 16mm($10 for 5 of them). I took the lever to the mill and opened the hole up .5-.8mm . I left the bushing in to give the bearing a stopping point on either side(that way I have more options for bolts). I had to make a center spacer for between the 2 bearings as well as find a washer/spacer small enough to allow the clamping pressure to only focus on the center race of the bearing. The bolt I used is from a brembo 4 piston caliper, it was originally ment to hold the 2 halves of the caliper together so I'm confident in its holding ability. My goal was achieved. Zero twisting play and zero in n out play. It is has a very smooth movement as well. We will see how it rides to work. It may not be the most pretty but when I get a new oven i will powder coat it and it will look very pretty.
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Ceramic bearings pivot shifter mod-20190521_073158.jpg   Ceramic bearings pivot shifter mod-20190521_073219.jpg   Ceramic bearings pivot shifter mod-20190521_073226.jpg  
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Old May 27th, 2019, 03:43 PM   #2
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Joined: Jun 2014
From: Boston
Posts: 899

I Ride: hyperstrada 821
This got me thinking about the heim joints in the linkages and their implication in providing some play. No answers there, but in inspecting my levers I noticed the rear brake was way to loose - so thanks :-)
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