Re: Chain Heat Testing
More links will spread the heat generated out. The fact that the chain heated up without load shows would indicate to me, it is because each link has to bend more on the small driven sprocket. There are additional factors such as the smaller sprocket having less surface area to dissipate the heat and less chain links to spread it over. With the chain getting that hot without load, while it may not be the perfect test, it still is very helpful for testing out fixes. I would say he proved airflow is not sufficient. If testing with larger sprockets at both ends, it may not give a true picture without load since one of the issues with a large front sprocket is increased chain speed so increased centrifugal force on the chain increasing load. An unloaded test may reveal positive results, but under load, the shear strength of the lubricant might be broken.
|