Fast Angles for round chain

[Duane(Pa)]

Assuming you can make a chain with any top plate angle you choose, and durability is a non issue, what do you like?
Should note that I cut way more oak than pine or other soft species.

 

[Marshy]

25*

 

[huskyboy]

25*

That’s less aggressive than 30* but should last longer

 

[isaaccarlson]

I run 55-60* on the side plate and 30* on the top. Make sure you are grinding the full tooth and clearing the gullet.

 

[Al Smith]

I never change the factory angle .I do however take the gullet clear down to the tie strap so it can hold a larger amount of chip before it rocks out of the cut .

 

[RI Chevy]

Good thread here Duane.
I was just going through this yesterday as I filed many of my chains.
My chains seem to make big chips. Good for cutting, but not good if you are looking for speed. A couple of my round filed chains had a 30* top plate angle. I primarily cut all hard wood, and virtually no soft wood. So I decided to try a 25* top plate angle to see if I could get some speed up. I am doing trial by error. LOL
Not really sure if I am going in the right or wrong direction, but I am trying something.
I guess I will eventually find out.

 

[mdavlee]

Oregon EXL that Steve had was nice on the 6100s. I bet it would give Stihl chain a run in speed for round.

30 degrees is where I would go.

 

[RI Chevy]

For hard woods Mike? The Oregon EXL that I just looked at looks like a 20* top plate angle on a new out of the box chain. Doesn't even match the witness mark. Witness mark looks like 30 to 35*

 

[huskyboy]

Oregon EXL that Steve had was nice on the 6100s. I bet it would give Stihl chain a run in speed for round.

30 degrees is where I would go.

The exl is as fast as stihl out of box and smoother I think. But hand filed I still like the old lgx. Easy to file.

 

[huskyboy]

For semi chisel, the stihl rm yellow without the extra bumper link cuts decent with a good hook in it.

 

[mdavlee]

For hard woods Mike? The Oregon EXL that I just looked at looks like a 20* top plate angle on a new out of the box chain. Doesn't even match the witness mark. Witness mark looks like 30 to 35*

Yep. I like fast chains. If I want durability I’ll use semi chisel

 

[RI Chevy]

Ok. Thanks Mike.
I will go back to 30* next sharpening.

 

[Homemade]

If I want fast, 35* top and 60 side.

 

[Duane(Pa)]

Point is, if you have a grinder at your fingertips, then no big deal to resharpen the loop if it dulls a little quicker. The index marks on mine are gone; I want to set it and forget it...

 

[MG2186]

I’ve been running semi lately in dirty wood, talk about drpressing going from my square to that....,,

 

[huskyboy]

I’ve been running semi lately in dirty wood, talk about drpressing going from my square to that....,,

Get a good hook in it (I handfile) and run stihl RM yellow without the extra bumper link. I can get it to cut decent for semi.

 

[WKEND LUMBERJAK]

I’ve been running semi lately in dirty wood, talk about drpressing going from my square to that....,,

Lean your grinder over to 45 or 55 I don't remember. just don't have your depth gauges to low.

 

[Wolverine]

I’ve been running semi lately in dirty wood, talk about depressing going from my square to that....,,

Best answer material right there! It's so awful, I'd rather run square and touch up twice as often.

 

[MG2186]

My semi cuts fine for semi, but you guys aren’t getting the point, don’t matter what you do to it, it’s still like comparing a blown 8 second big block to a small block grocery getter

 

[concretegrazer]

My semi cuts fine for semi, but you guys aren’t getting the point, don’t matter what you do to it, it’s still like comparing a blown 8 second big block to a small block grocery getter

Time for a turbo on the grocery getter?