MS881 ported 25in bar raker depth

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Grouse Hunter

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Acquired this saw through a trade and will be used for bucking large oak mostly...I realize it's a bit large and heavy for this application, but it's what I have.
How aggressive can I go on my rakers? 30, 40, 50thou?
 
Acquired this saw through a trade and will be used for bucking large oak mostly...I realize it's a bit large and heavy for this application, but it's what I have.
How aggressive can I go on my rakers? 30, 40, 50thou?
Read about 6° raker "progressive depth gauges" & FOP (Carlton File-O-Plate).

Old threads by BobL & Philbert

.. Are FOP really progressive depth raker generators?

If you don't find I'll lookup links.

Below is a very helpful recommendation. Easiest solution.

Sierra99 (AS, 2010) -- An old but good thread. It turns out that if you divide the gullet length by 10, you get the required raker depth to produce a 5.7 degree angle.
For example, a new chain with 0.25" gullet, divide by 10 you get a raker depth of 0.025", the "standard", that yields a good 5.7 degree angle.
If the gullet is 0.40" long, dividing by 10 gives you a raker depth of 0.040" (for the same 5.7 degree angle).

Try these links

https://www.arboristsite.com/threads/are-fop-really-progressive-depth-raker-generators.114624/

https://www.arboristsite.com/threads/raker-checking.69081/

https://www.arboristsite.com/threads/stihl-progressive-depth-gauge-tool.336757/

Edit... more.

Didn't answer your question. Right. Ms880 will pull huge. Just that at some point is dangerous & may damage bar rails or chain.

Read what Philbert references in old post. Good info on chain cutting action & wear effects.

Google -- Carlton Safety & Maintenance Manual.PDF
[CarltonSafetyMaintManual_EN.pdf / English download]
 

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