Glad your able to type after a mishap like that one!
I think you need to back up a bit before you post multiple posts badmouthing a product. Large mud trucks and custom hot rods use pinion mounted brakes on the differentials that get used in forward, reverse, and put under stress loads the worlds most powerful motorcycle will never see. I have never seen one of the bolts securing those back off. This was not a product failure, a bolt came loose and tore shit up. If your theory was correct, bolts holding in driveshafts would be falling out of cars everywhere causing worldwide panic and killing the human species. Only the amish would survive. Maybe the sprotor is not a good idea to everyone, but routine maitnance and general looking over the bike once in a while would catch this before this destruction took place. Sprocket and rotor bolts coming loose in harleys is nothing new either. It happens when people do not use locktite or a torque wrench. It is also not a bad idea to install 6 point hex bolts, drill, and safety wire them when the application permits. And remember, lock tite doesn't do shit if you do not properly clean the grease and oil from the threads first.I believe that using one disc as a sprocket and a rotor causes the bolts to come loose eventually, regardless of installation technique. With a conventional rotor or sprocket the bolts are pushed in one direction only. With sprotors, they get pushed one way for braking and the other way for drive through the sprocket. This is what causes EVERYONE who runs them to have them loosen up.
Now, you can double up on the loctite, chase and clean your threads, do what ever you want and all you've done is push it out further into the future, but it WILL come loose sometime. A standard rotor or sprocket can installed such that it will NEVER come loose, a sprotor cannot, IMO.
i just saw this problem happen first hand (bolts backing out then machining the bracket in half).It is also not a bad idea to install 6 point hex bolts, drill, and safety wire them when the application permits. And remember, lock tite doesn't do shit if you do not properly clean the grease and oil from the threads first.