Join Date: Aug 2011
Location: Sack-a-Tomatoes, CA, US
The 1" slack is on the bottom section Chain touching the frame or swingarm on the top is way too loose. Chain maintenance is VERY important and much cheaper than replacing it and the sprockets. If you have the shop manual, it should tell you exactly how to measure the slack and also should say how often to clean and lube it. A dry chain will ruin the sprockets fast as well as itself.
Black Beast = '71 CB750
Lazarus = '86 VT1100C rescued from a salvage yard.