Author Topic: Oregon 511A Chain Grinder  (Read 1055 times)

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Offline 660magnum

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Re: Oregon 511A Chain Grinder
« Reply #10 on: October 19, 2013, 06:19:27 pm »
Most everyone makes all chains 30-60 on the Oregon type grinders including me and I have no trouble.

I do use the 10 degree down angle on the chisel chains
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Offline winland

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Re: Oregon 511A Chain Grinder
« Reply #11 on: October 19, 2013, 06:44:18 pm »
Will the 30-60 combination be a bit more "aggressive" than the 25-60 or 25-55?


Offline 660magnum

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Re: Oregon 511A Chain Grinder
« Reply #12 on: October 19, 2013, 06:49:23 pm »
Yes and I'm a firewood guy but might get roped into cutting most any type wood. I use mostly chisel chains but have some semi chisel that I use on the real dirty stuff.
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Offline winland

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Re: Oregon 511A Chain Grinder
« Reply #13 on: October 19, 2013, 07:37:35 pm »
Thanks

Offline Philbert

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Re: Oregon 511A Chain Grinder
« Reply #14 on: October 19, 2013, 11:40:20 pm »
Will the 30-60 combination be a bit more "aggressive" than the 25-60 or 25-55?

You need to match the power head, bar length, chain pitch and type, and angles to the task.  Changing angles alone will have some effect and some trade offs.

Guys who cut all softwood might sharpen at 35*, but this could bog down the same saw in hardwoods.  Hardwood guys might go for 25*. So the 30* 'default' angle is often used for mixed/all around cutting.

Similar thing with the 60* grinder head tilt (although Oregon seems to be specifying 55* on a lot of their chains in their 'Maintenance & Safety Manual'). More tilt might be more aggressive, if your saw can handle it, but may dull quicker too.

Philbert

Offline 660magnum

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Re: Oregon 511A Chain Grinder
« Reply #15 on: November 13, 2013, 05:16:52 pm »
I visited the local Dolmar dealer today and was smelling around in the shop. Besides seeing a couple notable old saws on the bench, I noticed his bar and chain area.

He had a Silvey bar grinder and closer assembly as well as a older Windsor grinder which was identical to my early model Oregon 511A (No light). He also had a small Foley Belsaw with the raker attachment. I remember him telling me a few years ago that he never bothered with the 10 degree droop angle of the few chisel chains that came in even though his grinder was capable of doing the droop.
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