Just as an interesting anecdote, check out Dave Roper's story on removing the flywheel on his Moto Guzzi Dondolino after an engine failure:
http://www.daveroperracing.blogspot.com/search/label/Dondolino Makes removing a Bridgestone 90 flywheel seem easy by comparison.
I was working that corner at Grattan when the rod let go and dumped him on the track, so had a first hand view, plus the opportunity to sweep sand and gravel off the track while dodging race bikes.
