Rear Sprocket question

[michael parris heuberger]

hell - that is a veeeeeeery looooooooong ratio 20 / 36(38)

and how did you get the 20 in ? (18 works, 19 not available and 20 too)

a pic of your built in "20" with chain on would be so nice .

Hi. I will also have over drive 5th and 6th rev limit will be 13500 RPM. Robinson Industries makes them. I also have there outside output shaft support kit that makes it all work. He also made light weight nuts and a titanium clutch pusher rod for me.