Was chain sawing a Monterey Pine today and have a few basic questions:
formatting link
My main question is about the chain:
I was stupid, it seems, and I had been buying chains from Home Depot, who only sells the Y62 chain for my 18-inch Husky 445, which I only recently found out, really takes an H72 (which Lowes sells) chain:
formatting link
So *maybe* that's why my chains kept falling off while cutting?
formatting link
What damage could I have done by running at least two chains (maybe 3) that were, in effect, the wrong chains because Home Depot sold me a Y62 instead of what Lowes sold me, which is the H72 for that Husqvarna 445 chainsaw.
Danny D. wrote, on Mon, 29 Sep 2014 05:33:43 +0000:
I also had to slice a limb off an oak and wondered if this is the proper way to cut it (as I've seen this 'style' when the road crews limb the trees):
formatting link
How *close* to the body of the tree is that cut supposed to be? And, should it be vertical? Or inward sloping? Or outward sloping? Or, does it not matter?
No it is not. You want to cut it closer to the main trunk...a stub like that will just rot. If the bark ever grows over it, it will encapsulate whatever rot their is. You want to cut just outboard of the branch collar. Here's an explanation and pix...
There are 3 main things to consider when buying a chain - pitch , drive link thickness , and number of drive links . Most saws run either .325 or
3/8" pitch , .050 or .062 thickness , and the number of drive links varies with length . The 2 parts that you might have damaged are the drive sprocket and the bar and both are easy to replace . The main things people do to chains are run them too tight and run them dull , both will stretch the chain and make it fall off ... the best way I found to gauge sharpness is to check the chips . Large coarse chips indicate a sharp chain , small or "sawdust" chips indicate a dull chain . If your cut wanders it could be 2 things , either the bar is worn or the chain is duller on one side . If the chain can be wiggled sideways more than just a tiny bit , the bar is probably due to be replaced . I've been buying my chains from an ebay seller , cheaper than HD or Lowes for a better quality chain . I also buy a chain with a "professional" tooth profile - they cut much more aggressively , but they WILL kick back and are not intended for Joe-the-average-homeowner to prune his maple trees . I've currently got 3 saws , all run well , and all were given to me by people who couldn't keep them running/cutting well . They all needed a carb cleaning and new chains/bars , one also needed a new drive sprocket . But I'm set add more to the 3 cords I have cut/split/stacked when the weather cools off some more . Oh , and to answer your question about slicing lengthwise , it's much more efficient to split that wood with either a maul or hammer and wedge . Good aerobic exercise too !
Pico Rico wrote, on Mon, 29 Sep 2014 07:50:57 -0700:
I never knew *anything* about chain saws, having grown up elsewhere, and only bought this place in the mountains when I retired (to rest, I thought).
The Husqvarna 445 owners manual lists "Technical Data" on page 32 where it has a table which lists, for the 18-inch chain saw, two "low-kickback" chains, the *only* difference being the "drive link thickness".
Chain type = Husqvarna H30/H22/H23
Bar length = 18 inches
Pitch = 0.325 inches
Drive link thickness = 0.050 inches (1.3 mm)
Maximum nose radius = 10T
Drive link count = 72
File size = 3/16 inch (4.8 mm) 85°:30°:10° 0.025 inch (0.65 mm)
It also lists an H21 "chain type" where the only difference is the gauge and the file size:
Chain type = Husqvarna H21
Drive link thickness = 0.058 inches (1.5 mm)
And, another "chain type" of H25, where the file size and sharpening dimensions also change, which presumably means the edges are angled differently:
Chain type = Husqvarna H25
Drive link thickness = 0.058 inches (1.5 mm)
File size = 3/16 inch (4.8 mm) 60°:25°:10° 0.020 inch (0.65 mm)
What I need to look up are these confusing preceeding "H" letter classifications.
It's even more confusing than that, because the are "trailing" letter classifications also, apparently.
For example, I had written in the manual the original chain that came with the chainsaw (which I had bought at Lowes) was a 72DL (whatever the DL means), while this latest Oregon chain is just H72 with no trailing letters.
The bad news was that the two (or three?) 62-link chains I bought from Home Depot didn't explicitly say they fit the Husky 445, but this Oregon box (from Lowes) says it fits Husqvarna 445 & it lists the right dimensions as:
Chain type = H72 (fits Husqvarna 445, among others)
Bar length = 18 inches
Pitch = 0.325 inches
Gauge = 0.050 inches (1.3 mm)
no nose radius is provided
Drive link count = 72
File Size 3/16 inch (4.8 mm) (no degrees are provided)
Googling to make sense out of all this, and, remember, I had trusted the Home Depot people and they steered me to the 62-link chain, I find this, which I'm reading (I'm on hold with Oregon (aka Blont) right now.)
Danny D. wrote, on Mon, 29 Sep 2014 16:38:46 +0000:
Oh my! The plot thickens.
I had a nice conversation with a technical support lady at "Blont International" (parent company of "Oregon"), who informed me that I bought the *wrong* chains from Lowes, even though the specs are the same!
She told me that the Oregon H72 chain that I had bought fits a "standard" bar, while the Husky 445 chainsaw comes with a "micro-lite" bar (that's Oregon's brand name for it anyway) which takes a Husqvarna H30 chain, which converts to an Oregon G72 chain.
She said all the dimensions are the same except the "body of the chain has a narrower curve cutter which takes a smaller bite, needing less power to turn".
She said that, over time, the Oregon H72 will wear the micro-lite bar groove, whereas the Oregon G72 chain will fit.
I understood everything she said, but, she couldn't explain how, if only the *outside* part of the chain (i.e., the "cutter") is larger, then
*how* is that going to wear the *groove* in the bar???
Anyway, when I asked her to fix her packaging, we went over what the package *should* say, so as not to lead the *next* person astray.
Since one asterisk was already used (but not on the 445), we came up with either of these two expressions for marketing to mull over:
Fits Husqvarna 445**
** ensure your model has a standard bar or
** ensure your model does not have a micro-lite bar
When I asked her which store sells the right Oregon G72 chain, we found none in my general vicinity; so, when I asked her to replace my chain for me, she agreed, and I will send my used chain to: Blont International, attn: (her name) 4909 International Way, Milwaukee Oregon, 97222 (800-223-5168)
In summary, it's very confusing that the Oregon package says *nothing* about the Oregon H72 *not* fitting a micro-lite bar, and the Husqvarna owners manual says nothing about the chain *having* a micro-lite bar!
The one question she didn't answer was *how* can a chain with essentially the same dimensions (except for the cutting edge thickness) *damage* the thinner grooved micro-lite bar?
When I asked the technical support lady at Oregon (at 800-223-5168) what would happen when I put the Oregon S62 chain on a sprocket that takes the Oregon G72 chain, she said it would "chatter and jump around on the drive sprocket grooves".
She said it would eventually damage the "grooves" in the drive sprocket (depending on whether it was a "spur" sprocket or the other kind of sprocket, I didn't catch the name of the two types of sprockets).
What type of sprocket does this look like, to you?
HomeOwnersHub website is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.