Sprocket Rev E4

Select Chain Size;Select from list of American Chain Association ACA standarized chain sizes

Number of teeth;Type in number of teeth that you want for your sprocket, within min and max values.

Sprocket sheet thickness;Thickness of sheet material for laser cut of this sprocket.

Center HUB style;Bolt holes may be fully defined by PCD, number of holes and diameter. Alternatively, select center mark hole only.

Bolt hole PCD;Pitch Circle Diameter PCD of holes for bolting the sprocket to your wheel hub

Bolt hole diameter;Bolt hole diameter is typically 1 mm larger that actual bolt diameter, because sprocket is centered on the center holes anyway.

No of holes@HUB hole pattern;Hole pattern for bolting of sprocket. Minimum of 2 holes and maximum is calculated to fit on the PCD, considering that free diameter around bolt hole to fit washer and bolthead, is 1,6 x bolt hole diameter.

Center hole diameter;Center hole diameter accurcy is important for best centering of sprocket.

Relief options;Relief holes are generally added to reduce weight by removing unnecessary material. Relif 1 is located in-line with bolt holes. Relief 2 are in-between.