Lopro chain pics
I just measured the driver link thicknesses on my 050 chain.
My setup is
a Stock 441 with 25" 050 GB bar.
Chain is GB R50S (Carlton N1C)
Standard 3/8 sprocket.
Chain has been used to cut up trailer load of firewood, and then used to mill about 2 dozen small slabs. There was a fair bit more stretching at the start than regular 3/8 chain.
Firstly comparing brand new chain (new drive link thicknesses are between 0.0480 and 0.0490") with the used chain.
There is evidence of some small amount of peening of the edges of the used drive links, maybe a bit like Brads. These drive links thicknesses range from 0.0505 to 0.0485 so the peening is minimal, maybe as the peening is generated it is being ground away by the bar groove.
This is about the most peening on any single drive link (this one was 0.0505").
About half of the links look reasonably clean like this (0.0485 to 0.0495")
Sprocket shows significant wear but it has also seen a fair bit of service with a pair of standard 3/8 chains (ie not a good idea). I'll keep using this sprocket with this chain but when I make up the next loop I will start with a brand new sprocket.
Using a used sprocket also might explain some of the tie wear.
Here's how it wraps around the sprocket.
Overall it looks like a bit more wear than I am used to for 3/8 chain but not sufficient to stop me using this combo at this stage.
I just measured the driver link thicknesses on my 050 chain.
My setup is
a Stock 441 with 25" 050 GB bar.
Chain is GB R50S (Carlton N1C)
Standard 3/8 sprocket.
Chain has been used to cut up trailer load of firewood, and then used to mill about 2 dozen small slabs. There was a fair bit more stretching at the start than regular 3/8 chain.
Firstly comparing brand new chain (new drive link thicknesses are between 0.0480 and 0.0490") with the used chain.
There is evidence of some small amount of peening of the edges of the used drive links, maybe a bit like Brads. These drive links thicknesses range from 0.0505 to 0.0485 so the peening is minimal, maybe as the peening is generated it is being ground away by the bar groove.
This is about the most peening on any single drive link (this one was 0.0505").
About half of the links look reasonably clean like this (0.0485 to 0.0495")
Sprocket shows significant wear but it has also seen a fair bit of service with a pair of standard 3/8 chains (ie not a good idea). I'll keep using this sprocket with this chain but when I make up the next loop I will start with a brand new sprocket.
Using a used sprocket also might explain some of the tie wear.
Here's how it wraps around the sprocket.
Overall it looks like a bit more wear than I am used to for 3/8 chain but not sufficient to stop me using this combo at this stage.
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