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You guys are giving me a headache. I'm sticking with my 630 o-ring chain.:-D
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1983 GS 1100E w/ 1230 kit, .340 lift Web Cams, Ape heavy duty valve springs, 83 1100 head with 1.5mm oversized SS intake valves, 1150 crank, Vance and Hines 1150 SuperHub, Star Racing high volume oil pump gears, 36mm carebs Dynojet stage 3 jet kit, Posplayr's SSPB, Progressive rear shocks and fork springs, Dyna 2000, Dynatek green coils and Vance & Hines 4-1 exhaust.
1985 GS1150ES stock with 85 Red E bodywork.
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I traded communication with a techie at RK - here's what they said about the wear index and chain life.
"The wear life index is based off the tensile strength and dimensions of the chain. The information used in calculating chain wear life index is based off of information gathered during static testing and not when the chain is in dynamic motion, or everyday regular use"
"...The main reason the 530XSO chain is lasting longer than a 630SO chain on these bikes is the advanced X-ring in the 530XSO chain. The X-ring not only keeps grime and water out of the chain better than the standard O-ring chain, but it helps keep lubrication within the chain better along with creating less friction than the standard O-ring chain. Thus an X-ring chain will not get as hot as an O-ring chain and heat is a big factor in the deterioration and wear of a chain"Comment
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