huh. we weren't so worried about the ring shooting into the engine (they tended to shoot away from the opening), but we both had safety glasses on so we wouldn't lose an eye;) we did end up chasing the things all over the garage...
1978 BMW R80/7
"all we need is time and courage." - Renner
"A lightened flywheel on your bike is like me getting into Spandex and putting on track shoes to walk the dog." - M