Chainsaw Cutting Chains

[Xtreme]

This morning I observed a professional tree lopper attacking his chainsaws with an angle grinder. I thought he was sharpening the cutters or grinding the depth gauges down but on closer investigation he was completely removing every second set of cutters. :eek2:

He claimed, and subsequent observation confirmed that it reduced the drag and enabled faster cutting.

Just wondering if anyone else has seen/heard or tried this technique?

Here's a photo of the modified chain.

https://www.aulro.com/afvb/images/imported/2017/09/352.jpg

[weeds]

WOW......probably work well on green timber. I wonder if it works just as well on dry/seasoned timber?

[Vern]

Skip chain, for clearing chips

[JDNSW]

I think it will depend on what you are cutting. I can't imagine it doing well on my seasoned ironbark!

[Homestar]

As mentioned, it's a skip chain - used by loggers, etc who cut green timber all day - it clears the chips out of the chain better and makes for faster cutting - in green timber only. Used to live next to a group of loggers, all their chains were like that.

It will cut dried wood, but not as effectively as a normal chain.

[Xtreme]

I had heard of skip chains with an extra link between cutters but this ended up with five links between cutters!

[350RRC]

Also..... looks like chisel chain.

That's all I use in both mine these days.

cheers, DL

[460cixy]

It definitely does not cut faster it's purpose is less load on the power head in big timber when running big bars 42 to 72" when used on 18 to 24" it's slow and vibrates like a bastard. A full comp chain will cut faster in just about every situation if you want to cut green timber fast use square ground chain and learn how to sharpen it

[Xtreme]

It definitely does not cut faster it's purpose is less load on the power head in big timber when running big bars 42 to 72" when used on 18 to 24" it's slow and vibrates like a bastard. A full comp chain will cut faster in just about every situation if you want to cut green timber fast use square ground chain and learn how to sharpen it
That's different to what I observed - This was used on a 20" bar at high speed and cut through the green hardwood very fast, including when ripping the larger logs.
Comp chains may be faster but this was being used by a professional tree lopper in an everyday working situation.

[460cixy]

That's different to what I observed - This was used on a 20" bar at high speed and cut through the green hardwood very fast, including when ripping the larger logs.
Comp chains may be faster but this was being used by a professional tree lopper in an everyday working situation.

A full comp chain will still be faster. Another plus for skip is its faster to sharpen having less cutters and all. A good example of how fast a good square chain can cut this is a 50cc bread slicer with 18" bar in some dry hardwood it would double its score in green timber Rancher50 nitro 2 - YouTube (https://youtu.be/Yb1KH3DJZaE)

[PECOX]

I did just that last weekend to make a ripping chain, talk to someone that uses a chainsaw in the bush on the farm... and yes it lessens the load on yourmotor when doing long or large cuts. I am going to cut some black wattle slabs. Anyone want a demo? ( have lots of wattle to fell)

[460cixy]

I did just that last weekend to make a ripping chain, talk to someone that uses a chainsaw in the bush on the farm... and yes it lessens the load on yourmotor when doing long or large cuts. I am going to cut some black wattle slabs. Anyone want a demo? ( have lots of wattle to fell)

Interesting timber to mill always hard as hell when it's dry we don't get any that grow big enough to bother with or if they are big there full of grubs and grub holes sharpen to 10o for the best finish on the timber but I'm sure you all ready knew that

[350RRC]

AFAIK black wattle has a high silica content which makes it hard on tools used to work it.

Also........ is the square chain being referred to in this thread another name for chisel chain?

cheers, DL

[rick130]

AFAIK black wattle has a high silica content which makes it hard on tools used to work it.

Also........ is the square chain being referred to in this thread another name for chisel chain?

cheers, DLNo, square ground or filed chain is a very different beast.
You can make square filed from a normal round filed full chisel chain, but as the name suggests, the cutter shape is very different to a round filed chain.
You can buy it on special order.

It's the fastest cutting chain of all, old growth timber fallers used to use it here in clean, green Eucs, (it originated in the US) but you wouldn't use it as firewood chain.
It'll blunt far too easily in crappy timber, and old, dry Eucs I think would be way too hard on it.
It takes a bit of practise to square file too. ;)

[Wraithe]

Why grind the teeth off, a "Skip Tooth" chain can be purchased easily(or at least where I Live)..

I use a 30" bar with Chisel, all tooth chain... I plan on putting a 40" to 48" bar on, but to lighten the load I will purchase "Skip Tooth" chains...

I'm only getting the larger bar as all the small timber has gone and the logs are getting bigger, in fact too big for the tractor thus time to cut them down to size...

[460cixy]

No, square ground or filed chain is a very different beast.
You can make square filed from a normal round filed full chisel chain, but as the name suggests, the cutter shape is very different to a round filed chain.
You can buy it on special order.

It's the fastest cutting chain of all, old growth timber fallers used to use it here in clean, green Eucs, (it originated in the US) but you wouldn't use it as firewood chain.
It'll blunt far too easily in crappy timber, and old, dry Eucs I think would be way too hard on it.
It takes a bit of practise to square file too. ;)

Ya still alive mate [bigrolf] how you been? As you can see I'm still playing with saws.

[460cixy]

A wee diagram http://treefalling.com/granberg_chisel_chain_trimmed_p1.jpg

[rick130]

Ya still alive mate [bigrolf] how you been? As you can see I'm still playing with saws.

Hahaha, yeah Matt, you can call off the search party. [bigwhistle]

Serg sent me a photo during the week as he had the 346 out playing for work.

I haven't run one since..... winter 2014.... [bigsad]

[rick130]

And here's a square filed cutter.129469

[460cixy]

And here's a square filed cutter.129469

That's a very fast looking chain once that file is pointing back towards the first rivet of the next link they cut real well perfect corner alignment too wonder who filed that one. You still in Canberra ? Come run my nitro 50 for a laugh piped 2100 has had some upgrades too

[rick130]

That's a chain I was working on a few years back.
Neil has seen it, said just keep doing what I was doing, just don't bother dog boning like they do in the US.

It's all packed away in a shipping container atm 8 hours away...

I stl have to come and look at that fridge too. ;)'

[460cixy]

That's a chain I was working on a few years back.
Neil has seen it, said just keep doing what I was doing, just don't bother dog boning like they do in the US.

It's all packed away in a shipping container atm 8 hours away...

I stl have to come and look at that fridge too. ;)'

Yeah the fridge it's coming in to beer drinking season

[Bearman]

I have an old Danarm Tornado in the shed which has a ripper chain plus a handle on the end of the bar for 2 man operation:o:o:o:o I have never used this one or even started it as yet but I did use use an identical one many moon ago when I was a lot younger cutting Mulga scrub for feed. Heavy as hell but it was a good saw.

[460cixy]

I have an old Danarm Tornado in the shed which has a ripper chain plus a handle on the end of the bar for 2 man operation:o:o:o:o I have never used this one or even started it as yet but I did use use an identical one many moon ago when I was a lot younger cutting Mulga scrub for feed. Heavy as hell but it was a good saw.

I have one too second pull every time generally classic old saw must of been millions sold just about every collector has one or two

[Bearman]

I have one too second pull every time generally classic old saw must of been millions sold just about every collector has one or two

After months of using it to cut scrub my knuckles were dragging on the ground. They are bloody heavy.

[460cixy]

Yeah I call em dead arms heavy as hell but still reliable as an anvil same can't be said for a lot of modern saws. Some of the later danarms made great power with with reed valves etc but just could not compete with husqvarna and stihl for power to weight so they just disappeared along with about 3000 other chainsaw manufacturers