to give credit, I got my inspiration for this project from a custom motorcycle builder called Exile. As far as I know they were the first to offer a sprocket brake and as you know it was for Harleys.
Yes, Exile Cycles was the first company do do a sprotor brake. And they have been very sucessful with it.
http://www.exilecycles.com/index.php?section=34
So sucessful in fact that other companies have copycated them.
If copying is the sincerest form of flattery.....