Interesting scientific study of out of box chains

[usmcbuckwild]

Interesting study done on a couple different out of the box chains in regards to cutting speed, bar pressure and cut times. Actual laboratory testing and calculations, which makes it a bit of a dry read, but still interesting (at least to me).

https://www.skogforsk.se/contentass...omparative-study---arbetsrapport-918-2016.pdf

I wish they did a wider variety of chains.

 

[CR888]

I did a quick speed read through the report & not once did they mention depth gauges or how they act as a variable. With all the sharpening techniques, angles and ways of setting up a cutter to perform in whatever type of wood I'm not sure what you can take from the results. New stock chain can be very different between loops and easily perform 20% faster/slower etc. Looks like they put a lot of effort into the test but between all the engineers and other qualified people they probably should have got a logger/full time saw user to assist them.

 

[usmcbuckwild]

I did a quick speed read through the report & not once did they mention depth gauges or how they act as a variable. With all the sharpening techniques, angles and ways of setting up a cutter to perform in whatever type of wood I'm not sure what you can take from the results. New stock chain can be very different between loops and easily perform 20% faster/slower etc. Looks like they put a lot of effort into the test but between all the engineers and other qualified people they probably should have got a logger/full time saw user to assist them.

I concur. They utilized techs from the cutter head manufacturer to ensure it was set up properly, but that was it. Still it was nice to see someone at least attempt to test in a controlled setting with actual diagnostic devices.

 

[Moparmyway]

I did a quick speed read through the report & not once did they mention depth gauges or how they act as a variable. With all the sharpening techniques, angles and ways of setting up a cutter to perform in whatever type of wood I'm not sure what you can take from the results. New stock chain can be very different between loops and easily perform 20% faster/slower etc. Looks like they put a lot of effort into the test but between all the engineers and other qualified people they probably should have got a logger/full time saw user to assist them.

They did measure it, "E"

 

[usmcbuckwild]

They did measure it, "E"
View attachment 121239

I missed that. Must have been one of the red Xs when I was reading it (my phone didn’t like it too much and didn’t show several of the pictures.

 

[brshephard]

Cool paper.
I wish they would have tested full chisel, not just semi and chamfer.

 

[Dub11]

Cool.

So is this all .404 harvester stuff?

 

[usmcbuckwild]

Cool.

So is this all .404 harvester stuff?

I believe it is as Stihl RMHS only comes in 1/4 and .404