Thread: Replace the chain - go by chain checker tool or mileage?
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Old 07-31-19 | 11:50 AM
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Bill Kapaun
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From: Mid Willamette Valley, Orygun

Bikes: 87 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds. 2019 Giant Explore E+3

Originally Posted by NoWhammies
Steel ruler it is! [MENTION=209177]3alarmer[/MENTION] thanks for the detailed explanation

[MENTION=78399]Bill Kapaun[/MENTION] There isn't much to calibrate on my chain checker. It's just a metal 'ruler' that slots in to the spaces of the chain links.
My point was to calibrate your checker from experience.I now know that IF my checker "just fits", that my chain is worn .25%. NOT .5%.
Some day I'll learn what the .75% mark really means. Maybe .5%?
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