sprockets

[peatff]

That one should be in the "how not to" column, did the chain actually go round ?

[farmer rod]

Glad to say it wasn't my saw! I was borrowing it to deal with some large trunks and yes the chain was "slipping" so I fitted a new bar and chain, and obviously a sproket.

[Stere]

Is there anyway to minimize rate of sprocket wear?

 

0.5mm isn't much think all my sprockets are more than that.

 

Stihl sell a special tool to measure:

 

 Asume  pointy bits are  0.5mm?

[Stubby]

4 minutes ago, Stere said:

Is there anyway to minimize rate of sprocket wear?

 

0.5mm isn't much think all my sprockets are more than that.

 

Stihl sell a special tool to measure:

 

 Asume  pointy bits are  0.5mm?

Don't use your saw .

[Stere]

I thought something about having chain correct tension & oiling well would make a difference etc.

 

Edited October 16, 2018 by Stere

[Gary Prentice]

39 minutes ago, Stere said:

I thought something about having chain correct tension & oiling well would make a difference etc.

 

Chain tension will make a bit of difference, but in the end they're a consumable part. 

 

 In answer to the original question, when I was managing lads I'd replace when the bottom of the gulley got dimpled. In an ideal world you'd probably change every 2-3 chains regardless, but with multi-user saws (and lots of digging ditches) the rate of  chain consumption seemed a lot higher than owner/user saws and the teeth always disappeared before drive link wear problems appeared. 

 

 

 

[Gary Prentice]

11 hours ago, farmer rod said:

Is this one past its best?

No photo, but I've seen a couple of floating rim sprockets where the drive link had worn through the clutch itself, separating it into two parts.

[tree-fancier123]

1 hour ago, Stere said:

0.5mm isn't much think all my sprockets are more than that

seems like throwing money away - read an article about a millionaire who cuts the top off a toothpaste tube to scrape out a last couple of days worth

[peatff]

23 hours ago, tree-fancier123 said:

seems like throwing money away - read an article about a millionaire who cuts the top off a toothpaste tube to scrape out a last couple of days worth

 

It takes dedication, I do it with hand cream as well

[spudulike]

Sprockets last a long time and generally people are lazy or uninitiated and don't bother changing them until I get my hands on them. You can reduce the wear on the rim or sprocket by learning to adjust chain tension correctly and ensuring the oiler is putting enough oil on the bar. I usually change spur sprockets once the spur has indentations on the ends of the lobes - not really worth not doing whilst the saw is in bits!