Oregon chain mystery? - #19A drive links - #25 cutters - .325 .063 semi

[Johnnybar]

Can anyone tell me what this is? Guessing it is NOS and now phased out / replaced. May be narrow kerf as it looks a little less wide than my Carlton K3L

 

[SawTroll]

There is no way it is narrow kerf if it is .063. However, the width of cutters vary on regular chain as well, and semi-chisel will be slightly narrower than chisel up front.

#25 likely just is the recommended raker setting - that is .025 on most .325 chain.

#19a on Oregon .325 drivers sounds like something old, as it doesn't fit the system used the last few decades.

 

[ray benson]

Only see one reference to 19a chain
http://www.acresinternet.com/cscc.n...4f271c480e59d3b788256e27001e5ae8?OpenDocument

 

[Johnnybar]

Thanks fellas...wow, thought it was old stock but who knew.

 

[Johnnybar]

I'm guessing if the top plate is at 90 deg then -10 should be used when sharpening?

 

[Johnnybar]

That makes 2 types in that buy that were NOS chain. I also have 60' of #35 that I think went obsolete in 2010.

 

[ray benson]

This is out of a 1984 Oregon product application guide, it lists 19ap chain

 

[Johnnybar]

Thanks Ray