Just in case newbies are reading this, the "Raker angle" I'm referring to in this post is not the angle on the top of the raker. It's the angle between the cutter tip and the first point of contact the raker is likely to make with the wood relative to the top of the bar. Its the angle in red in the second photo.
It looks like you have plenty of raker angle.
This one has a raker angle of 8.1º (angle of red line to the bar top) but raker has a flat top so raker and cutter won't penetrate as far as the angle would suggest.
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This one has a raker angle of 8.6º and looks like it has a little bit of rounding on the top of the raker ,so based on both the angle and rounding it should penetrate further.
What concerns me a little is the tips/edges of some of the cutters look slight rounded - see red arrow. It could be just the angle of the photo or the presence of a bit of dirt but these must be have no rounding.
Can you post some photos of the tops of the cutters.
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Your top plate cutting angles look OK but for your saw in the size of wood you are cutting you can probably reduce that angle a bit and it should help the saw self feed.
There is some degree of trade off between top players
- top plate cutting angle
- raker angle
- raker top shape
However, if the raker has any sort of a flat top - even if the raker top is sloped - it will penetrate less into the wood which in turn will not allow the cutter to grab as much wood as it could.
Below are two cutters, the top one is Will Malloff's - note the small/narrow size of the raker and how well rounded it is - he is of course using an 090
The other one is mine - my chain has a wider raker but I compensate for this by, as you say, "shark finning" it
Also note my lower raker angle but I'm cutting wider hard wood and even the 880 will not tolerate too high a raker angle
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Assuming the cutters are OK one way to determine what raker angles suit your wood/saw/cut width is to systemically increase the raker angle by taking a couple of swipes off the rakers and try milling. Repeat this until the chain starts to grab and bog the saw down and at that point you will have gone too far. Now reduce the raker angle by taking some swipes off the cutters. Then measure the raker angle and that's it. Expect a lot of vibe and more chain wear and tear so you will need to make sure you keep the oil up to the chain - under these conditions I'd use an Aux oiler even in narrow cuts.
You need to be aware that if you move to wider cuts then the chain may start to grab again.