02-03-2015, 10:21 PM
Actually CB4ME I saw that several times on CB 750 that were drag raced or street raced. 1969 Chain technology was not too good and a slightly built 750 could easily out power the stock 530 chain which would snap and as the sprocket is turning counter clockwise as the bike rolls forward the chain follows the sprocket and ends up wadding up under the front counter sprocket hitting the case and punching a hole on it. Quite often ( but not always) they the pieces could be rewelded. If not new cases were in order, and since they were split horizontally instead of vertically like a Brit bike, it required a set of cases.