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I used to have an issue with chain derailing back in the 1970s/80s when the logging company I worked for forced us to use the small diameter safety nose bars, like the Oregon banana / Double Guard tips or the Windsor Mini Pro bars. When we were later allowed to run standard tips [after protest...

Basically this whole thread was based on the OP [Coreys] question why is the up cut seem faster before I chimed in, I'm trying to get back to that original question with my answer on post#44 If you want an answer for Jerrys question about derailing, I'd say running long bars in the PNW would see...

Proper chain tension is everything and keeping it sharp by constant touchups. I will run very little slack, like I said earlier only enough where at WOT will keep it tight by the slack being taken up by rolling over the rim onto the bars tail. But tension is very importent to me so I don't mess...

Forget the rail cars:lol: Even with droop in the chain at WOT the endless loop of chain tightens up, only when a pinch or rotation kick back occurs the chain can derail. A chain is not only "pushed" it's evenly "pulled" as well.

I'll let all you guys on something.......Think of the bar and chain as a rope and pulley.:/: We all understand the labor saving benefit of lifting a weight with a rope on a pulley, now think of a chainsaw drive sprocket pulling a chain over the sprocket nose [pulley] and the cutting effort on...