SawTroll
Information Collector
I have one of those bars... What was the purpose of making it like that?
Using a smaller diameter nose, for anti kickback reasons, while keeping the bar close to "flat" on one side.
I have one of those bars... What was the purpose of making it like that?
I agree with putting them on writing up when selling, but when i buy its kinda nice to see them upside down, then you know they did something right.What is important to remember is that the bar should be run on both sides. How one plans to ensure this happens is probably not all that important. I just don't pay attention to how the bar goes back on when I have it off and the random installation ensures it runs on both sides. I certainly don't turn it over on every sharpening because I usually sharpen the chain on the bar. Rotate the bar from time to time and keep your chain sharp. Your saw will be happy!
When I sell a saw and am posting pictures, I always put the bar on with the writing up because some will think it is installed incorrectly otherwise.
Do pay attention to a previous post to not rotate banana bars. They're only designed to run one way. (and thus wear out more quickly)
Just as important as flipping it, clean out the rails with a nail and your oil holes. Those "wire edges" could make a sharp chain seem dull, clean them up with a flat file.As others have indicated, the important thing is that that you have a system that ensures that you flip the bar now and then, not exactly how often you do it!
Remember to scrape the bar clean between the rails, and check for developing "wire edges", when you are at it! Clean oil holes.
Just as important as flipping it, clean out the rails with a nail and your oil holes. Those "wire edges" could make a sharp chain seem dull, clean them up with a flat file.
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I flip it when I need to back-bar. Now that I'm using full wraps, I almost never flip the bar
Sorry man, just agreeing with you. Personally I think that's a pretty important step in maintaining my bars.Didn't I basically say that?
I flip my chain every other time I sharpen. It cuts my time spent sharpening by half.
I have one of those bars... What was the purpose of making it like that?
The nose sprocket teeth will wear on both sides evenly if you flip the bar.Sprocket replacement - I assume you are talking about the drive sprocket, correct? And how does flipping the bar maximize the service life of the nose sprocket? I always just understood it to maximize bar rail life since you typically buck cutting down for the most part.
Waylan
Your wasting your time with the air. . .metal filings wont hurt the sprocket either.If you file chain on the bar it's a good idea to hit it with air and get rid of the filings. I was taught to draw file away from the nose too when dressing the bar, saves too much filings going in to the nose sprocket
As Niko indicated it was a safety feature. If you read any of the old Poulan literature they discount the effectiveness of chain brakes, thus very few of the older saws have them (though I think Canada mandated them before the U.S.).
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