I broke a DID 50 HDS o-ring chain on autobahn in the 80's. Chain had waay too much slack, geared down in an uphill from 5:th to probably 3:rd and WAT. Chain flew away as a snake braking the 3 chain guard brackets, cutting a slice of the registration plate chew marks on rear hub. Cases unharmed except for a max 2 mm deep, 5 mm wide groove under drive sprocket on upper case. Speed was around 90-100 kph. Slow going trucks had to be passed. 836, ported head, cam and around 80 whp
An earlier episode with unmod CB750 engine, new chain with correct slack. It snapped when revving it and release at a red light. Rear wheel was 16" with 5.10 tire, dry road. Chain was a new strange Tsubaki that looked glass beaded and felt lighter. None O-ring if remember right, 530 100 links as always. Might have been with black nylon rear sprocket.
It is more fun with a modified engine and twist out from the corners, roundabouts getting a controlled slip, then twisting more.
The tire must be an OK tire not loosing grip very early like the old Avon Roadrunner or keeping track or suddenly lose all at once as old bad Continental K112 with horrible wobble/ side jump.
Metzeler ME99 with speed index H was perfect back then.
I'm more careful today since bike has cost some. My Heidenau K36 H rear tire work probably fine for similar adventures.
