Відео

@@elpolaco7654 I will show a video of the 2 chains in the next few days. It is almost impossible to pick them apart. They are really pushing the limits of what a semi chisel is with the RMP. Both of these things are very fast. I need to break down the SP33G to compare them on the same saw. It's incredible how good some of these 325 semis have become

First try at this. Still working out the camera settings required to capture this so the next attempt will show things better

First attempt at doing this and used a very light feed pressure to see what happens. Hopefully the next attempt will show more detail and I'll just dig it in there

@@ChainsawHospital I learnt it the hard way but if you Google "Stihl chain selection chart" you should find a PDF that has all the meanings listed. It's confusing at first and they now use 2 different numbering systems to add to the confusion. You can still order using both systems, this older setup is more useful for larger amounts (rolls) the new one is aimed more at buying pre made loops in boxes. It would be nice if all the manufacturers had a more universal system but at least chain is easier to figure out than everyones bar mounting codes

@@ChainsawUsers so far it's the only major injury I have had from a saw and with any luck, it will stay the only one Can report that a square chain does leave a very clean cut, no tearing, just a clean slice

Haven't we all a tale to tell, let's be honest! Im notorious nicking my pants,hence the leg protection 😅

@@SawChainTheories nothing happens to the dead

I should be ok from here and yep, I have a few of those reminders on me. Just none from doing this until now

I'll play around with it more at some stage this was just testing the idea because I didn't know the camera could do this. I want to try using a older 08s. Bigger cutters (404) and low clutch engagement speed might help capture something

Thank you! Thats what I always wanted to capture and somehow, I have never seen this before

@ URL is opened for only who knows it. That's STIHL style.

@@hn20281 Don't get why they would do it but I'm very glad you sent the link

@@SawChainTheories This video demonstrates well that the chip size observed in cross-cutting is almost completely independent of the movement of the chain from and to the bar ("rocking motion"), because the chip breaks into smaller pieces very easily during the process of its formation.

@@SawChainTheories it's my pleasure. i support sawchain from far east jp

@@AA-tb4ff yep, I thought the same. That's 1.8 seconds of footage, 1000FPS played back at 25fps and it's nowhere near slow enough to see anything important. I think 10k is probably the range required

@@SawChainTheories Wow, thats less than two seconds of footage. Man those chains are flying.

@@SawChainTheories Thanks for your time and effort! I already wrote that the researcher here in general used a chain speed of 17.6 m/s with a professional 1000 fps camera (FasTec InLine 1000), but had to slow down the engine to 6k rpm to see the chip formation process. This camera speed was not sufficient to confirm some of the phenomena occurring during cutting. I still have this idea: my phone has the ability to manually set the shutter to 1/10000 sec. I think probably yours also has at least this possibility. Of course, this will require a really large amount of light to sufficiently illuminate the scene.

​@@elpolaco7654The next attempt will be using an old 08s because of the low chain speed. Hopefully it will capture something. It needs so much light for this to work. I can only do it on a bright sunny day with the sun in the right spot

@@SawChainTheoriesI just wondered why the 1000 fps camera was enough for him to capture the movement of the cutters quite well, because at a chain speed of 17.6 m/s the links travel a distance of 1.76 cm in 1/1000 s, which would mean a total blurring of the video/images (like in your video). The matter cleared up when I looked at the camera's manual. It has the ability to change the shutter speed for all fps values. The largest factor is 20x (0.05), that is, for video recorded at 1000 fps at the 20x factor setting, we get 1/1000 s / 20 = 1/20000 s (.000050 s) frames. That is, in simple terms, we can say that he was actually using a 20000 fps camera.

@@daviddenyer756 I don't cut much in the summer but you get a few good days here and there. Snakes are a little too active for me this time of year as well

With all the chains I guess we only need 3 chains skip semi and full all other variaints only add say 5 to 10 % gain

Luckily the majority of people don't ever need to know this. They will return to their dealer, tell them the saw and bar they are using and what they are cutting, then buy whatever chain is recommended by either the dealer or from the book. I like the variations, there's big gains to be had if you can find the right combination for what's being done

I've run quite a fair bit of 3/8 inch semi chisel on 85cc saw tools, . . and heck, that's a chain I end up doing a lot if re-sharpening of in the field. Niw that I think of it, I run the wide and narrow kerf on a 550 XP Husky saw, . . and not only does my fuel tank last longer. You are correct, the .325 inch chain in both kerf's is forgiving too. I don't have to sharpen as much, as the saw tool at 50cc doesn't have the power to get the chain as banged up, as the 80cc plus tool does. Here's what I will say, I was happy working at around 65cc saws for a long while, until I moved up several engine power notches to 80cc plus. And when I do think about it, yes I did lack for some power in the saw at 65cc. But running the 3/8 inch chain in fairly decent sized timber, I think I had to re-sharpen with the 65cc far less than I do nowadays with 85cc. The problem with 65cc was that you'd nearly need two saws with you for heavier work, . . as that 65cc saw tool can start to cook itself up, by running too many fuel tanks through it, whilst working it hard. The 85cc can prove more durable, as once isn't always running it 'in the red'. But precisely because 65cc didn't have power, the chain edge did last longer on it. That can be a huge thing, when you get down into smaller wood. The old saws used .404 pitch chain, and while I haven't run it, I know it was strong enough, it took a lot to blunt .404 altogether. I'm not sure if anything any more runs the .404 pitch.

What I'm saying I guess, is with smaller chainsaws with less power output, yes they do hold edge on the chain cutters a lot longer. So it's not the chainthat becomes spent as quickly. But what can happen, is the saw tool itself can cook, if you're running it all day with no break. There's a balance that has to be considered, between the lasting of the chain, and the lasting of the saw itself.

@@shinichirohida2556 Yes, it's a type of eucalyptus. The common name is stringy bark and it's been down for a few years now. The chain held up well

@@elpolaco7654 The listing I can find here show the same (yellow) guide for S35G, C33 and C35. The SP33G guide is only listed for the one chain as far as I can tell. The guide has to much side to side movement on the NK narrow tie straps. Completely unexpected, the difference in width is the tie straps thickness. The drive links are 1.5mm above the tie straps to the top, thinned below. I'm struggling to find any other info of people comparing the NK to full width chains. I'm surprised by the lack of difference between them and I'm not sure if this was a one off thing or if it's normal. Have you seen any other info on this? For reference the 95TXL averaged 12.7 seconds for the same cuts

@@SawChainTheories This is more logical and in line with the data on their website. My source was the manual for the new saw (2024). It looks like there is (another) error there. What scares me is the number of errors in the documents whether Stihl or Husqvarna... By the way, I found that Husqvarna's recommended grinder head angle (X-Cut, Hxx) is, like the Oregon, 55°. EDIT: This Husqvarna document, from which I took the angle values, turned out to be another nonsense produced by these companies. There is more sensible data in another (more reliable I guess) document: 55°/10° for Hxx chains (except 3/8 LP ofc) and 60°/0° for X-Cut chains. I have not seen meaningful comparisons between these chains. I find yours the most reliable.

@@patrickvennard838 The C33 and C35 are available over here now as well. I might try them at some stage but I'm happy with how the semi chisels are running on the smaller saws. If they have another 2 for 1 deal at some stage I'll probably buy them

I appreciate that Husqvarna has introduced X-Cut .325/.050 chains for sale in Europe. Of course, the .325/.050 Pixel version has been available for a very long time, as Husqvarna has been equipping saws with rebranded Oregon chains. And Oregon Type 95 was available back in the 1990s. I hope that maybe some day they will also introduce (full) .375/.050, because due to the almost complete lack of presence of .050 (not mini/LP/Picco) on the European market, I have accumulated a stock of .050 chain practically for free. Getting guide bars for it isn't easy though. Of course, Stihl's previous chains (RS and otherwise) .325/.050 are different from the current (Pro) ones. The C33 is not classified as a Pixel/Narrow Kerf, unlike the 23 RS Pro.

@@elpolaco7654 Thats a shame about the guide bars. We cant get 3/8 bars in anything other than 058 or 063 easily or cheaply.

@@bartektwardowski Yes it's a 288

People were kind enough to help me so I'm happy to pass it on. Glad it's been some help to you

@@henrybarker1159 Not sure. Looked to be some kind of eucalyptus but didn't ID it Everything in that area was really nice to cut because they grew on the edge of a clearing so lots of sunlight, water and good soil means rapid growth

@@aussiehardwood6196 Took some work (Meteor cyl, piston, carb rebuild) but that thing has been my favourite all year. Always wanted a big husky but couldn't justify the price so got that instead. It's big, heavy and looks like a suitcase but the ergonomics of it fit me well. It also sounds awesome

@@SawChainTheoriesIt looks like a 372xp clone. Am I right?

Yes 372xp platform/chassis. If I was to get a clone like that I too would replace carb with OEM, dawgs, kill switch, meteor piston, perhaps work with the jug if it wasn't terrible.but most are. Then you could have a saw that should be reliable-ish 😅

@@ToddAdams1234 It's a 288 clone

Its common name is stringy bark and it's not really that hard in comparison to other species of eucalyptus. This one grew in hard conditions, was old and has completely dried out making it extremely hard to cut. Normally they don't put up this kind of fight, but it happens sometimes

@@elpolaco7654 I tried multiple times today and unfortunately it's just not enough. I would need to reduce the chain speed and feed pressure dramatically to be able to capture anything meaningful. I will try again if I can find a saw with a reduced chain speed but for now I'm out of ideas to try

@@elpolaco7654 I think that is the better way of explaining this. It pivots off the heel of the cutter because it's the part that is in contact with the bar rail. It's also part of why this changes with different chain brands, the design and angles of the heel are different

@@SawChainTheories Agreed. Thanks!

@@HayChaffandSawdust1 No and I also stupidly didn't mark that cutter so I can't go back and check easily. I'll do it again when I get a chance and follow up

@@SawChainTheories Just another good excuse to make another good video!!!

Thanks, I'm surprised by the response to this. Did not think anyone would be interested in this stuff

Thanks. I'm surprised so many people were interested in this

@@ChainsawUsers I cut a lot of this out but using the Carlton 404 as an example There were 7 different file plates to suit their 7 404 chains. B3S, B3LM and B3EP all have different depth gauge heights and shapes. All have different top plate clearance angles. Ranging from 4.5 to 8 degrees. All required different amounts to be removed maintain the correct ratio. Long story short, it's complicated. This is also the issue I have with the angle of attack idea, it may be correct for some chains but it's not universal. Hopefully this can help explain why different progressive tools give different results

If a cutter is cutting wood then it has and attack angle. If I hold a carpenters chisel and use it, the the angle at which I hold it is called an attack angle. So when the chainsaw chain cutter and raker touch the timber, it's always referred to as an attack angle.

@@ChainsawUsers But should it's depth gauge be set by its, 1) Attack angle 2) The amount the corner rises That is the 2 different progressive depth gauge theories. They possibly overlap in some situations, in others they are very different. Was carlton right in his thinking of did he miss an important part of this? They didn't make any reference of maintaining an angle and their tools (the ones I have used, there are many I have not) did not maintain a fixed angle. Like a constant gauge, the angles changed as the cutter wore back. I can't answer most of these questions because there are too many variables, but from trying this I lean more towards Carlton's idea being correct. I can also see there are chains where none of this is required because the difference is so small

Thanks but I have sharpened enough to last me a lifetime 😂

@@tdm8817 I might have to do this again but I will try to make it more interesting by demonstrating some of these things. It won't happen for a month or 2 but I'll get there soon

@SawChainTheories cool I look forward to that, I've been learning more about how chains actually cut and trying to wrap my head around the concept. It fascinating to me and as with anything it seems that the more you learn about a topic the more you realize how deep the rabbit hole goes. I'm on the other side of the world from you and it's cool to see how you set up your chains vs mine cutting pine.

Thanks

@@Larry-hi1ri Out of everything I said the most important part is, use a tool to set your depth gauges and round off the front edge of the gauge after lowering it. The rest really doesn't matter to most people, it's just the technical part of how they work

@ thanks never rounded mine off I will now

@@Fogyt121 I have tried, no it cant

@@SawChainTheories and what was the result?