Shocker Paul - really sad to see that happen. For what it's worth, the Reeves' Mk1 chucked a flywheel off a couple of times, and on one occasion the timing wheel came loose off the crank with the inertia drop. It's got to be partly revs-driven, plus the bolts are small-as, but if you're not putting one back on, then that'll sort that. If ever you go cable change, get in touch - a light flywheel/clutch assembly is essential to avoid other expensive experiences.