Going through my box of bits and found this flywheel. Don’t think from a TS , maybe an earlier model.
Dia 9 1/2 ins, width 5/8 in with fairly sharp edges. Lug sticks out 5/8 in with 1/4 in of this threaded.
Weight quite heavy at 3.6 kegs. Assume threaded bolt on side was someone’s attempt to balance.