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More aggressive chain for my Stihl
Posted: 25 June 2009 01:29 PM   [ Ignore ]   [ # 16 ]
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Jags - 24 June 2009 11:25 AM
LLigetfa - 22 June 2009 09:24 PM

Stihl RS full chisel.  Holds an edge well and puts all 4 horses to work.

JJ - this was real good advice given.  Not sure where your dealer is coming from, but I have also compared A to B and there was quite a difference.

I have no reason to question ComputerUser in his chain choice, as he is very knowledgeable, but I don’t even know what the hell round-ground is. LOL

There are two methods of putting the edge on a chain Jags…  One is “round ground” which is what most everybody uses, probably including you - it is sharpened with either a round file, or a grinder with a round edged wheel, and has a cutting edge that is more or less semi-circular in shape on the side of the tooth.  It is the most popular method of sharpening because it gives good results, and is very fast and easy, with a minimum of tooling needed.

A square ground chain will in theory cut better / faster / longer, but is considerably harder to sharpen - essentially it is sharpened with flat files in such a way that you have a precise square corner at the point where the top and side of the cutting tooth intersect.  The cutting edge on the side of the tooth is straight.  However it is a LOT harder to sharpen, and requires more expensive tooling and more skill to do the job.  While it is theoretically better, the reports I’ve seen say the difference is small, and with the exception of a few production cutters, or folks doing competition where every fraction of a second counts, relatively few people find it is worth the effort.

RSLK is the Stihl factory produced square ground chain, and what CU was suggesting is to use that until you are finding it difficult to keep the factory edge on it, at which point it can be resharpenned and used for the rest of it’s useful life as a standard round ground (RSC) equivalent.

Gooserider

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Posted: 25 June 2009 01:50 PM   [ Ignore ]   [ # 17 ]
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Thanks Goose, that fills in the question marks.

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Posted: 25 June 2009 02:17 PM   [ Ignore ]   [ # 18 ]
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Gooserider - 25 June 2009 01:29 PM

A square ground chain will in theory cut better / faster / longer, but is considerably harder to sharpen - essentially it is sharpened with flat files in such a way that you have a precise square corner at the point where the top and side of the cutting tooth intersect.  The cutting edge on the side of the tooth is straight.  However it is a LOT harder to sharpen, and requires more expensive tooling and more skill to do the job.  While it is theoretically better, the reports I’ve seen say the difference is small, and with the exception of a few production cutters, or folks doing competition where every fraction of a second counts, relatively few people find it is worth the effort.

RSLK is the Stihl factory produced square ground chain, and what CU was suggesting is to use that until you are finding it difficult to keep the factory edge on it, at which point it can be resharpenned and used for the rest of it’s useful life as a standard round ground (RSC) equivalent.

Gooserider

Well said.  The stuff is nice to use, though.  Sharpening is a task, until you get the hang of it (which I totally haven’t yet, especially on the super hard Stihl cutters).  But it’s fun to play with, and when you finally get tired of trying to get your corners and angles the way they should be, you can re-file or grind it with a regular file/wheel, and use the chain up like a “regular” chisel chain.

For the normal woodcutter who sharpens with a round file, I think the Oregon stuff is the way to go.  I find it so much easier to file Oregon chain by hand than anything else out there, and it still holds a respectable edge.  Heck, it’s almost fun.  And it’s easy enough to touch up after each tank, that you actually don’t mind doing it.  With the Stihl stuff (and to a lesser extent GB, Carlton, WP), I usually wait until it’s dull, swap it off, and regrind at home.


The videos tell part of the story, but the feel in your hand is totally different. 

Square:
th_7900H_Square.jpg

Not square:
th_7900HB.jpg

In this larger stuff, it was obvious that the saw was laboring less with full-comp square chain than it would have with with full-comp round.

Dolmar_7900_Spruce_Log.jpg

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Posted: 26 June 2009 02:33 PM   [ Ignore ]   [ # 19 ]
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Another vote for “Your dealer is on crack”.

When I switched from a safety chain to an RSC, and also with a full chisel, bucking wood literally went from being a chore to being fun.  It was that big of a difference.  Go buy one.

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Posted: 26 June 2009 03:12 PM   [ Ignore ]   [ # 20 ]
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I thinks most dealers don’t like selling spool-stock chisel chains to homewners becsue we tend to be careless….except those on this forum. They don’t want someone coming back with stitches in their face or leg saying “my friend told me you should have warned me about that chain..blah blah blah” So they tend to tell the homeowners theres no difference. I understand why they do that. I would get tired of newbs cutting themselves due to the kickback and then crying to me about why I sold them the chain.

Its also a pain because homeowners never know what size or pitch they need so the salesman have to look up their model and then go coutn the links and push the pin in….all this on a saturday morning when they have a line full of people.

Its just easier to say “theres no real difference”  smile

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Posted: 26 June 2009 03:17 PM   [ Ignore ]   [ # 21 ]
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Arlo - 26 June 2009 03:12 PM

I thinks most dealers don’t like selling spool-stock chisel chains to homewners becsue we tend to be careless….except those on this forum. They don’t want someone coming back with stitches in their face or leg saying “my friend told me you should have warned me about that chain..blah blah blah” So they tend to tell the homeowners theres no difference. I understand why they do that. I would get tired of newbs cutting themselves due to the kickback and then crying to me about why I sold them the chain.

Its also a pain because homeowners never know what size or pitch they need so the salesman have to look up their model and then go coutn the links and push the pin in….all this on a saturday morning when they have a line full of people.

Its just easier to say “theres no real difference”  smile

+1

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Posted: 26 June 2009 08:53 PM   [ Ignore ]   [ # 22 ]
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smokinj - 26 June 2009 03:17 PM
Arlo - 26 June 2009 03:12 PM

I thinks most dealers don’t like selling spool-stock chisel chains to homewners becsue we tend to be careless….except those on this forum. They don’t want someone coming back with stitches in their face or leg saying “my friend told me you should have warned me about that chain..blah blah blah” So they tend to tell the homeowners theres no difference. I understand why they do that. I would get tired of newbs cutting themselves due to the kickback and then crying to me about why I sold them the chain.

Its also a pain because homeowners never know what size or pitch they need so the salesman have to look up their model and then go coutn the links and push the pin in….all this on a saturday morning when they have a line full of people.

Its just easier to say “theres no real difference”  smile

+1

+2 In fact I was getting looks from my local dealer for asking him to order me a full skip chain for a 20” bar.  I don’t think most of the dealers around hear even know what they are.  2nd store this week who asked me what a skip chain was.

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Posted: 26 June 2009 09:39 PM   [ Ignore ]   [ # 23 ]
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joshlaugh - 26 June 2009 08:53 PM
smokinj - 26 June 2009 03:17 PM
Arlo - 26 June 2009 03:12 PM

I thinks most dealers don’t like selling spool-stock chisel chains to homewners becsue we tend to be careless….except those on this forum. They don’t want someone coming back with stitches in their face or leg saying “my friend told me you should have warned me about that chain..blah blah blah” So they tend to tell the homeowners theres no difference. I understand why they do that. I would get tired of newbs cutting themselves due to the kickback and then crying to me about why I sold them the chain.

Its also a pain because homeowners never know what size or pitch they need so the salesman have to look up their model and then go coutn the links and push the pin in….all this on a saturday morning when they have a line full of people.

Its just easier to say “theres no real difference”  smile

+1

+2 In fact I was getting looks from my local dealer for asking him to order me a full skip chain for a 20” bar.  I don’t think most of the dealers around hear even know what they are.  2nd store this week who asked me what a skip chain was.

Maybe its a knowledge test - if you don’t know what it is well enough to explain it, they don’t want to sell it to you…

Gooserider

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Stove #2 - 1979 Pro-Former, Model Z (Pre-EPA smoke dragon) 2ndary heat in basement, seldom used
Stove #3 - no-name smoke dragon, not installed, likely to become outdoor smoker
Primary heat wood, backup gas HVAC
Saws - #1 - 80cc Dolmar 7900, 20 & 28” bars #2 - 36cc Pull-on, 12” bar
Splitter - Harbor Freight 30 ton Horizontal / Vertical (only used Vertical!)
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Posted: 02 July 2009 03:23 PM   [ Ignore ]   [ # 24 ]
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What’s a skip chain?

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Posted: 02 July 2009 03:26 PM   [ Ignore ]   [ # 25 ]
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http://www.stihlusa.com/chainsaws/types.html#RSF

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Posted: 02 July 2009 04:15 PM   [ Ignore ]   [ # 26 ]
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JJ3500 - Thank you for the link.

Tell me if I am reading the information correctly…...
If I have a 021, 14” bar,  3/8” and .050 I would order the #3993?  It looks like I would have to specify bar length of 14”.
Am I missing something?  What chain would you suggest?  I have access to a ton of pine and birch but most of it isn’t huge in diameter.

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Posted: 02 July 2009 04:45 PM   [ Ignore ]   [ # 27 ]
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Anyone here feel free to correct me. 

Kobudo, the chain you are looking at is typically for a larger saw with a much larger guide bar.  I don’t think 14” is in the category. 

My suggestion, after I used a full chisel myself, is to get any of your choice with the yellow diamond symbol(states Warning!).

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Lopi Endeavor
Kozi pellet stove
Avalon Salish.  Retired.  Propane is too expensive.

Stihl MS 361 25”,20” and 16” bar
Husqvarna 345 18” and 16” bar
Poulan ?(retired). 
Stihl splitting maul
Fiskars axe
Fiskars camping axe

Yellow lab pup 10months(May 09)
01 Dodge 3500 4x4
89 Doge 350 dump 4x4
07 Toyota Avalon
04 Polaris Sportsman 700 (4x4…if it wasn’t already obvious =)

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Posted: 02 July 2009 06:27 PM   [ Ignore ]   [ # 28 ]
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kobudo - 02 July 2009 04:15 PM

JJ3500 - Thank you for the link.

Tell me if I am reading the information correctly…...
If I have a 021, 14” bar,  3/8” and .050 I would order the #3993?  It looks like I would have to specify bar length of 14”.
Am I missing something?  What chain would you suggest?  I have access to a ton of pine and birch but most of it isn’t huge in diameter.

While some folks use skip chain on everything, the normal rule of thumb is that if you are running a standard or short bar for a given size saw, you are better off using “full complement” (aka “full comp” or standard) chain.  Skip chain is mostly for folks that are running bars that are on the long side of normal for a saw, or “over-barring” it…  My personal rule of thumb is that for best results you should have about 3-4 cc’s of engine for each inch of bar length…  I.E. a 14” bar is good on a 40-45 cc saw, while to run a 20” bar, you should have about a 60cc saw (and if you have a 79cc saw like mine you will be doing serious smiling at the way it goes through wood cool grin 4cc / inch is really fun…)

IOW, if you have 3-4cc of engine per inch of bar (with rounding), get a normal chain, if you are much under 3 cc / inch or less, get a skip chain or a shorter bar…

Usually the chain guage and pitch are implied by the chain number, so you don’t have to specify them when ordering, however since you can put any one of several bars on a given saw, you would need to specify the either the bar length AND what saw you are using, or (preferably) the “link count” - the number of drive links in the loop.  The link count is easier for the dealer since that way he doesn’t have to look up the saw / bar combo to see how many links it takes…

I don’t do the Stihl part numbers, but I would suggest that you want one of their “yellow” chains in a “full chisel” style if what you are after is agressive…

Gooserider

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Stove #1 - VC Encore 2550 catalytic - Burning almost 24/7 in LR as primary heater (and making LOTS of creosote! - I’m not happy with it!)
Stove #2 - 1979 Pro-Former, Model Z (Pre-EPA smoke dragon) 2ndary heat in basement, seldom used
Stove #3 - no-name smoke dragon, not installed, likely to become outdoor smoker
Primary heat wood, backup gas HVAC
Saws - #1 - 80cc Dolmar 7900, 20 & 28” bars #2 - 36cc Pull-on, 12” bar
Splitter - Harbor Freight 30 ton Horizontal / Vertical (only used Vertical!)
8 cords covered wood storage, ? in backup piles.

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Posted: 02 July 2009 07:38 PM   [ Ignore ]   [ # 29 ]
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Gooserider - 02 July 2009 06:27 PM

I don’t do the Stihl part numbers…

http://www.stihlusa.com/chainsaws/types.html

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Posted: 07 July 2009 09:58 AM   [ Ignore ]   [ # 30 ]
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jj3500 - 23 June 2009 03:57 PM

OK…went to the Stihl dealer where I bought my 361 from last summer.  I told exactly what I posted up top.  He essentially talked me out of it.  That there is a difference, yes.  But by no means…dramatic. Additional information too.  My stock chain will stay sharper longer than that of the full chisel.  Full chisel will be sharper but dull quicker.( i realize there will always be a trade off)

So…I didn’t buy one.  Just going to sharpen my existing one.

JJ, which dealer did you get you saw from?  Being a local I’m fairly familiar with them.

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