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Straighten and closing rails is important. You can tell on the drive link, rails and underside of tiestraps if there is something to correct in filing and depth gauge etc. You also see if rim/sprocket is bad. If the chain has damage on drivers/tiestraps or uneven wear it won't help to just fix...

There is a couple different things we talk about here. Burr on the rail is one and wrong shape/hight on rail is another. Burr is easily removed with file or these tools they come up with to do it as not many seem to know how tto operate and take care of a file. If the bar is worn wrong and...

Rails need to be dressed and kept straight especially if new chain is put on. Even if there is wider groove than need the load is on the tie straps and rails. If theu match it sits well, if they are rounded it wobbles. Unless rails are worn down so driver hit bottom. So what could cause a...

Bar tip is leaning down a bit before you push throttle. Once you do that it rises like a spring and if chain rails and tension is right you have no issues. I service several long bars for mills and stack cutters.

I not only understand fysic's, I also understand mechanic's.. I also understand weights that is spun on two points very fast have other problems than gravity. It is not just chain tension. You would know this if you ran long bars. When chain is pulled by engine there is a lot more load created...

No. If all is correct it chain will ride on the two sprockets with enough tension to stay straight between the rails. Tiestraps sit on the rail at all times. When chain is worn in rivet and drive link hole it will bend sideway's at load is put on the tooth. It will be same if a rim is worn out.

I don't think that is worth the money. Sure it isn't pricey, but it is not good either. Running crappy things is tiresome. And you will not be pleased with what you get.. Cutting near houses is a guarantee there is nails. It is a calculated risk. You may not hit them, but they are there... I...

That's right. Maintenance is the key. Looking over chain and keeping it sharp and lubed prevent all issues but normal wear. If dressing bar and keeping it nice and straight is kept up it will wear down until drive link hit bar groove bottom. Usually something else happen before this...

Chain, Sprocket/rim and bar is the key to a good use of the tool. You need this to be good to be able to use the tool. If one is bad it quickly turn the others bad as well. On the bar, chain and Sprocket/rim you can most often see if it needs to be replaced For you I would say you need to think...

I fix up bars sometimes. and I think yours is worn to the point it is not possible to get it right. Have you ever thought about why it gets wider? If all is well the chains tie straps ride on the rail evenly and drive ling is not in contact with the rails/sides.