When set correctly both rollers can run a long time without a problem.
That said.
In the early days we thought ya would want the chain tensioned as hard as ya could get it.
We pushed IN on the adjuster rod while the set bolt was loose and then tightened it.
Well we now find that when we put excessive tension on the rollers the chain made impressions over time and ya would have a couple of rollers which looked like sprockets.
While HONDA made just one size for the Guide Roller there were 2 sizes for the tensioner. ..........lm
Snakeoil wrote:The one engine I had apart had impressions in the rollers from sitting for a long period without moving. The primary roller also had small impressions in one side from probably sitting at well.
What you cannot tell is if that happened from sitting for years, months, weeks or days. My guess is with age and heat, it takes less time for the impressions to form because the material has loses it's resiliency. Once you have impressions in even part of the roller, it will have a greater tendency to follow the chain pitch consistently and therefore end up producing permantent impressions over time.
Now if the roller material cracks at any of those impressions and begins to chunk, then that same process could continue around the roller. As it loses material, the rollers sink deeper into the roller and basically form a sprocket out of the roller.
So my guess is material property loss over time leading to impressions in the roller while at rest for long periods, combined with operation once impressions begin to form turns them into sprockets.
Or maybe they just cook from heat and nothing else.
regards,
Rob
