Chainsaw Repair

Chain - Grinders - Filing - Wood Milling - Tools - Welding - Machinist - Mowers - Tillers => Chain - Bars - Grinders - Filing => Topic started by: Cut4fun on July 28, 2011, 08:41:48 pm

Title: Anatomy of chainsaw chain
Post by: Cut4fun on July 28, 2011, 08:41:48 pm
Link to help the newer guys to understand chainsaw chain.

http://www.sawchain.eu/ANATOMY%20OF%20SAWCHAIN.pdf

Chain types, semi chisel, round chisel, square chisel etc. Full skip, Full comp, semi skip



Title: Re: Anatomy of chainsaw chain
Post by: Troutfisher on August 03, 2011, 07:24:51 pm
This could be a pretty cool thread, maybe we can get more in depth about what all those parts and pieces do in the cut....... anybody got some good pics of a cutter in "attack position"?
Title: Re: Anatomy of chainsaw chain
Post by: Cut4fun . on August 03, 2011, 07:41:56 pm
I know you know TF. 

Just a link to how a cutter works and some info on frozen wood cutting.

http://www.oregonchain.com/pro/pdf/maintenance_manual/ms_10.pdf

Title: Re: Anatomy of chainsaw chain
Post by: Troutfisher on August 03, 2011, 07:48:39 pm
Good Link Kevin, ya I've seen several pics like that before.  Here's something I don't really get...........
What makes the cutter come back from attack position? Why doesn't it stay there and pull a continuous chip all the way across the block?
Title: Re: Anatomy of chainsaw chain
Post by: Cut4fun . on August 03, 2011, 07:53:48 pm
Here is 33 pages on Carlton and some of it is explaining the rocking motion of the working chain.

 
How Saw Chain Cuts Wood
To help you properly maintain your Carlton Saw Chain, avoiding theproblems of poor maintenance and recognizing the wear patterns that can causesaw chain and guide bar failure, it is essential to first learn how saw chain cuts woodith your chain saw. You might be surprised to learn that a cutter tooth must actu-ally leave the guide bar to cut wood efficiently.All saw chain cuts with a rocking motion. When cutting properly, saw chainresembles a dolphin swimming in the ocean. As the cutter enters the wood, the“leading edge” starts to bite (#1) causing the cutter to rock back as far as the depth gauge will allow (#2). The cutter is now in the “attack position”. The cutter jumps off the guide bar and into the wood (#3).Chain tension and power from the saw pull the cutter back out of the woodand the severed chip exits from the underside of the cutter (#4). The cutter thenreturns to its original position (#5). Any condition that upsets this smooth and effi-cient rocking motion will have a negative effect on the life,performance and cutting efficiency of any saw ch

Need to let download.

http://www.scribd.com/doc/28466692/Carlton-Chain-sharpening-Complete-Book
Title: Re: Anatomy of chainsaw chain
Post by: CASE5854x4 on August 03, 2011, 08:35:22 pm
Good explanation of how the chain "rocks" in and out of the cut.
Thanks for the link, good info.
Title: Re: Anatomy of chainsaw chain
Post by: Troutfisher on August 03, 2011, 08:59:28 pm
So,  the cutter rocks back as the corner touches the wood, but doesn't actually start cutting into the wood until the raker touches and stops the rocking motion? or does it start making a chip as soon as it touches the wood, and the rocking stops the cut?
Title: Re: Anatomy of chainsaw chain
Post by: Cut4fun . on August 03, 2011, 09:08:05 pm
Read the part on depth  gauges and pics 3 and 4 gouging into the wood it talks about. Never thought about that.  It's in those 33 pages to read.  ;D

Way over my simple pea brain but figured you had this all under control and would enlighten us.  ;)
Title: Re: Anatomy of chainsaw chain
Post by: CASE5854x4 on August 03, 2011, 10:58:06 pm
The analogy of a dolphin swimming (leaping in & out of the waters surface), is how I picture the cutter "diving in & out of the cut".
Title: Re: Anatomy of chainsaw chain
Post by: Troutfisher on August 04, 2011, 05:49:36 am
Read the part on depth  gauges and pics 3 and 4 gouging into the wood it talks about. Never thought about that.  It's in those 33 pages to read.  ;D

Way over my simple pea brain but figured you had this all under control and would enlighten us.  ;)

Ya right, the more I learn the more I realize how much I don't know. 
Title: Re: Anatomy of chainsaw chain
Post by: Cut4fun . on August 04, 2011, 06:37:42 am
I'd like to see something in slow motion showing the chip coming off and then being carried away.
Title: Re: Anatomy of chainsaw chain
Post by: Troutfisher on August 04, 2011, 03:38:04 pm
Me too, I'd love to watch a chain work in slow motion, I'm sure lots of things would be a lot clearer. 

It also hit me a while back that the angles change the more the cutter rocks back. If you take a couple strokes off each raker with a file, the angles that the cutters meet the wood has changed because the cutter is rocked back more. Side plate, top plate, outside, inside, everything is different.  :-\
Title: Re: Anatomy of chainsaw chain
Post by: Cut4fun on February 09, 2012, 11:24:19 am
Me too, I'd love to watch a chain work in slow motion, I'm sure lots of things would be a lot clearer. 



TF you are just going to have to do a better video.  Overlook beginning and better slow mo later on.

http://www.youtube.com/watch?v=-2gxw2feZqI

Title: Re: Anatomy of chainsaw chain
Post by: davbell22602 on December 17, 2012, 04:30:12 pm

http://www.scribd.com/doc/28466692/Carlton-Chain-sharpening-Complete-Book

Here's another link to this or can someone email me the complete copy of this?
Title: Re: Anatomy of chainsaw chain
Post by: Cut4fun . on December 17, 2012, 04:54:25 pm

http://www.scribd.com/doc/28466692/Carlton-Chain-sharpening-Complete-Book

Here's another link to this or can someone email me the complete copy of this?

 ???  scroll through 33 pages and read right there  or download it.  ???

Title: Re: Anatomy of chainsaw chain
Post by: davbell22602 on December 17, 2012, 05:15:52 pm

http://www.scribd.com/doc/28466692/Carlton-Chain-sharpening-Complete-Book

Here's another link to this or can someone email me the complete copy of this?

 ???  scroll through 33 pages and read right there  or download it.  ???



OK. I tried downloading it but you gotta pay for a membership to download it.
Title: Re: Anatomy of chainsaw chain
Post by: Cut4fun . on December 17, 2012, 06:00:56 pm

http://www.scribd.com/doc/28466692/Carlton-Chain-sharpening-Complete-Book

Here's another link to this or can someone email me the complete copy of this?

 ???  scroll through 33 pages and read right there  or download it.  ???



OK. I tried downloading it but you gotta pay for a membership to download it.

I read the 33 pages long ago and just scrolled through 33 pages again to check and they are still there. Cant you just do that too? It's FREE that way.
Title: Re: Anatomy of chainsaw chain
Post by: davbell22602 on December 17, 2012, 06:06:10 pm

http://www.scribd.com/doc/28466692/Carlton-Chain-sharpening-Complete-Book

Here's another link to this or can someone email me the complete copy of this?

 ???  scroll through 33 pages and read right there  or download it.  ???



OK. I tried downloading it but you gotta pay for a membership to download it.

I read the 33 pages long ago and just scrolled through 33 pages again to check and they are still there. Cant you just do that too? It's FREE that way.

I would but I dont read very well from computer monitor. I was going to print it off to read.
Title: Re: Anatomy of chainsaw chain
Post by: Cut4fun on December 17, 2012, 06:12:28 pm
I think we are hit on that unless you can right click and print. I dont know. Good Luck.
Title: Re: Anatomy of chainsaw chain
Post by: John Mc on February 19, 2013, 09:37:47 am
I think I've got the book you are looking for, but it's too large to post here:  file 1.7 MB, and max allowed file size is 390K.

"Zip"-ing the file only gets it down to 1.6 MB

Any ideas?

John Mc
Title: Re: Anatomy of chainsaw chain
Post by: Cut4fun . on February 19, 2013, 01:08:28 pm
I think I've got the book you are looking for, but it's too large to post here:  file 1.7 MB, and max allowed file size is 390K.

"Zip"-ing the file only gets it down to 1.6 MB

Any ideas?

John Mc

Idea you can just email him a copy.

or email it to me and I will see what I can do to post a link.  Let me know what you decide.
Title: Re: Anatomy of chainsaw chain
Post by: John Mc on February 19, 2013, 01:44:46 pm
Already emailed it to him, as well as to someone else who said they'd get it on to you, Cut4Fun
Title: Re: Anatomy of chainsaw chain
Post by: 660magnum on February 19, 2013, 02:38:09 pm
I got it and sent a copy to cut4fun   -THNX
Title: Re: Anatomy of chainsaw chain
Post by: John Mc on February 19, 2013, 02:44:23 pm
Great... I didn't know what username that email address belonged to.
Title: Re: Anatomy of chainsaw chain
Post by: doreadeal on December 19, 2013, 08:57:47 am
Wow, I had no idea. I assumed like many that each tooth just did a continuous cut. This explains why you don't end up with long chips I guess. I'd love to know what process led to this design. Was it intended, or was it a series of mistakes and trying new things, and the dolphin effect was just what happened when it finally worked?
Title: Re: Anatomy of chainsaw chain
Post by: Philbert on December 19, 2013, 11:03:45 pm
I believe that each cutter rocks back into the cut and stays in that posture until released at the end of the cut. I think of it like the iron sticking out of the base of a woodworking plane. If the depth gauges are too high, the cutters skip over the wood, even if sharp. If the depth gauges are too low, the cutters try to dig in too deep, and grab or stall.

When you are cutting across the grain (cross cutting/bucking AND ripping/milling) the chips break into little pieces as they curl into the gullets of the cutters.

When you are cutting with the teeth moving in the same direction as the grain ('noodling'), you get long, continuous curls ('noodles'), just as you would planing with the grain.

Philbert
Title: Re: Anatomy of chainsaw chain
Post by: Gregg MacPherson on February 21, 2014, 01:29:21 am
I didn't feel like signing up to Scribd either so I rummaged around and found this link to a free download of the Carlton Chain book.  Who actually has copyright? Don't Carlton want us all to have this? 
http://gepkolcsonzo.eu/wp-content/uploads/2012/01/complete-book.pdf

We could also upload this to the manuals section I supose,  if it's easier to find as a reference there..

Cheers,
Gregg
Title: Re: Anatomy of chainsaw chain
Post by: brettl on February 17, 2015, 03:35:54 pm
Hi guys. Is the Carlton book and the book mentioned that's been emailed around one in the same? I want to rad this but not on a smartphone screen. My email is bleinmiller@yahoo.com if someone would be kind enough to email it? I could have my folks print it and mail to me then. Thank you
Title: Re: Anatomy of chainsaw chain
Post by: Cut4fun . on August 22, 2016, 12:37:27 pm
Bump for person asking for info in first post. Shows the differences.
Title: Re: Anatomy of chainsaw chain
Post by: HolmenTree on September 25, 2016, 11:18:04 am
The analogy of a dolphin swimming (leaping in & out of the waters surface), is how I picture the cutter "diving in & out of the cut".
Bump here too :)

Yes that's how the movement was always explained to understand the motion. But with only .025 clearance of the depth gauge it's so small.
Which leads to another part of the innovation of sawchain in the last 10 years...Oregon's AntiVibe or Stihl's Comfort cutter design.
By removing that small thickness of the heel of the cutter that contacts the bar...a shock absorber effect is made. Of course the opposite side link on the cutter doesn't have this clearance so the cutter can't "over rock". Only disadvantage is the chassis could  have a flex in it caused by the cutter having a slight side movement instability. Reason old school cutters without the clearance make the chain desirable for timbersport competition.

Does anyone own or have information on the Stihl .404 high tooth timbersport chain?
My question is did Stihl design it with the "Comfort" clearance or left it out and keep it old school for better speed performance ?