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Yamaha R6 Spline Specification

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Dunter

Student
Oct 24, 2023
1
Hello!

I need to manufacture a splined shaft to fit a sprocket from a 2015 Yamaha R6. I have been unsuccessful in finding the proper spline standard for these sprockets. I believe it should be a JIS spline, possibly under JIS D 2001:1959.
here are some basic dimensions of the sprocket
13 spline - involute
Major Diameter - 25mm
Minor Diameter - 22mm (difficult to accurately measure due to odd number of splines)

I have also attached a photo of the sprocket
If anyone has anyway to figure out the proper specification of this spline it would be appreciated!
 
 https://files.engineering.com/getfile.aspx?folder=1b932e19-708c-435c-869d-c13021ede277&file=IMG_9062.jpg
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