DAPNET Forums Archive › Forums › Sustainable Living and Land use › Sustainable Forestry › Felling Levers
- This topic has 24 replies, 12 voices, and was last updated 13 years, 7 months ago by Lanny Collins.
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- August 22, 2009 at 7:14 pm #40801Rick AlgerParticipant
Does anyone out there have experience with felling levers?
I break half a dozen wedges in the coldest part of every winter dropping 12″ spruce. It’s getting expensive to replace those wedges.
Will a felling lever tip a 75 foot spruce?
August 22, 2009 at 8:13 pm #53871Scott GParticipantRick,
I got one a several years ago to try out for post & pole material and I don’t like them. The Scandanavians’ like them. Smaller material they are cumbersome and larger material you lose the added compression advantage as you have when your tapping wedges. I wouldn’t even come close to trusting a felling lever on a fairly large stem.
There are definitely good wedges and poor wedges. The hard, brittle plastic ones (usually red) that are marketed, i.e. by Stihl and others I hate. They have a real tendency to spit out when you’re driving them. My favorite wedges by far are Black Bear and those with steel heads and a shallow insert. Softer plastic that works better, especially in cold weather and you can lift the world by being able to pound on the steel cap. The insert is shallow enough so that you don’t rock your chain. You could get these from either Madsen’s or Bailey’s.
Take care,
ScottAugust 23, 2009 at 9:11 am #53866Carl RussellModeratorScott pretty much says it about the levers. I found them cumbersome, and ineffective.
As far as wedges go. I always carry, and use two on big and hard trees. Trying to lift a heavy crown with one wedge will definitely put too much impact on any plastic wedge. Putting in a second wedge and hitting one then the other, I can lift the biggest tree even in the coldest weather.
I have been using for years the very expensive orange “unbreakable” wedges that used to be made by Sandvik, and now by another name. They cost around $35 each. They will break, but I can get nearly a year out of one, especially if I don’t cut it up too much, and use it in conjunction with another one.
I also use an 8 pound sledge with the handle cut off. It allows for more force, and has a broader hitting surface than the back of an axe. Of course then I also have to carry an axe to cut myself out of jams.
Carl
August 23, 2009 at 12:04 pm #53876john plowdenParticipantI’ve been using mid range plastic – the farther the wedge is from the hinge the easier it is to move the top – Two wedges always work better than one – some trees need a “cookie” or two a green wood disc from a limb or sapling between 1/4 to 3/4 of an inch thick that you put your wedge on top of in the cut – using an open face notch and a bore cut allows you to place your wedges for maximum advantage and safety-
JohnAugust 23, 2009 at 1:37 pm #53864Gabe AyersKeymasterWe have tried a big crow bar before, but it just seems to be another piece of equipment to drag around through the woods and loose. The plastic wedge are relatively cheap, some are even made of recycled plastic, We use medium (10″)and long ones (12″) double taper, and carry four in the pouch. When a tree requires more lift we use the double up technique with one wedge on top or the other placed at right angles to each other. Hitting one then another. They don’t tend to jump out as bad that way.
Maybe a short fat wedge would help with the smaller softwoods, say an eight inch double taper. I know it doesn’t make sense but the smaller trees are harder to deal with than the larger ones. They are hard to get to fall, there is less room to wedge them without hitting the hinge and then the logs are a pain on the landing too, plus of course they aren’t worth as much. But when one is practicing an improvement style harvest that always have to be dealt with. Really cold weather takes a tole on plastic wedges though and they can fly off in any direction when hit slightly out of true center. We use the five pound Collins felling ax and also have an eight pound sledge on a short handle like Carl. Some of our guys use a homemade skip hammer to drive wedges and grabs. They are usually made out of a 6-8 pound splitting maul with the point ground down to a cone for skipping grabs. They have the shorter handles so they will fit in a loop off the hames and not have to carried by the feller all the time, since they are used in the skidding work.
There is definitely a big difference in felling softwoods and hardwoods. There is also no question that felling in a single tree selection silvicultural prescription that the work is harder, slower and requires more skill and time.
If you can get them or any of your supplies locally it is probably better. We have made wedges with the chainsaw out of dogwood when we need a lot of lift quick and use it in the back opposite of the hinge withe the plastic ones on the sides. Of course this is usually a bigger stem that needs serious life to keep it off residual trees or say a neighbors fence or a skid trail.
August 23, 2009 at 1:55 pm #53875Rick AlgerParticipantThanks for the replies. Sounds like thumbs down on felling levers.
My problem with wedges occurs at or below zero. Sometimes they shatter like pottery. I’ve tried various types including Stihl and Bailey’s, but when it’s really cold they fail with frustrating regularity. I have made my own wooden ones, and they don’t shatter, but they pop out as often as not.
I generally lug a twenty foot push pole around with me on the bitter cold days. The pole works, but it is dangerous.
Since I work almost exclusively in marked wood (usually 30% commercial thinning) directional felling is critical.
Does anyone have an address for wedges such as Carl mentioned that work at below zero?
August 23, 2009 at 2:15 pm #53886lancekParticipantI was looking on one of the log arch web sites and seen a timber jack, cant remember wich one though. Anyways they showed a jack that was a long pole with a spike on one end and a jack on the other! Didnt look like it was hard to make but it worked like a charm! You basicly stuck the jack end in the ground and the spiiked end in the tree put preasure on it and then made your chip and back cut till it was almost ready to go and then you pushed the tree over with the jack! I wouldnt want to do a large tree with this jack but trees up to 16″ I dont see how you could go wrong. Tim
August 23, 2009 at 5:01 pm #53872Scott GParticipantForgot to mention doubling up and stacking, definitely. Another option that I forgot to mention are rifled wedges. They are really handy for stacking as they don’t go sideways and the technique is the same as Carl mentioned for doubles; pound one and then the other. The only issue I’ve had with them is that they are almost too soft. Those might be your cold weather option, Rick. As far as getting them locally it is tough to get anything other than the hard, brittle ones peddled by the saw manufacturer’s. Go with Madsen’s or Bailey’s and they’ll have them to your doorstep in a jiffy.
What Jason mentioned that the small ones can be harder than the large ones can definitely be true. I can side bore down to 8″d and have a hinge & latch to work with and side wedge but less than that and tall with a back lean can be problematic. Something that I have found that works fairly well is what we refer to as a quarter cut. Face cut, come in from the back as in a traditional cut to your hinge width but only make the initial backcut in half of the backside. You can then place a small wedge in that kerf, set it, then go to the other side and CAREFULLY cut the other quarter, give the wedge a couple of good smacks and you’re in business. If I could figure out how to put a sketch on this thread it would be a lot easier to understand.
As far as timber jacks, felling levers, and other gee whiz devices I have no need or desire to haul that much luggage into the woods. Just more unecessary, expensive things for me to lose. If it can’t hang on my wedge pouch belt it is a hinderance. A felling axe for thumping wedges or a sledge back at the truck if I know I’m going to have to get really serious is all I need. If it is really a problem tree with bad potential if something goes wrong (i.e. power line, building, etc..) I’ll throw on the spikes and harness and put a tip line in the crown. I’ve also used a poorman’s Silvey tree jack (a.k.a. bottle jack) for serious back leaners that are in the huge category.
Take care,
ScottAugust 23, 2009 at 9:44 pm #53880TaylorJohnsonParticipantI usually carry two small and two large wedges with a 5lb felling Axe. I do have more in the truck in case I need more left and I have cut ones out of maple and iron wood before in a pinch. I also have an eight pond splitting maul that has the handle cut off that I use if I really need the smacking power. I cut the handle off all my axes and mauls to be the same length . I do this because my arms are very long for my body I am only about 5’9″ and my arm span is longer than a guy that I work with that is almost 6’4″ . And to top that off my inseam is only about 29″ or 30″ , , yeas I look like a brush ape 😀 . One old boy I used to work with from FL used to tell me I looked like a little white gorilla when I worked. Well any way that is why I have the short handled maul . Taylor Johnson
August 23, 2009 at 11:14 pm #53867Carl RussellModeratorIt occurs to me, reading all your posts, that we should put together a discussion on directional felling and harvesting with horses. I know a lot of mechanical loggers who only use directional techniques infrequently, yet I have always championed the need and efficiency, especially for low impact, and animal powered forestry.
This is one of the issues that I think animal powered loggers should promote. It is a limitation of logging with animals that requires us all to become skilled choppers. These skills not only facilitate the use of animals, but they support the careful approach to the forestland that can set us apart from the mechanical community.
Carl
August 23, 2009 at 11:40 pm #53870Dave CamireParticipantCarl and all,
Its been a while since I chimed in on any discussions but this one “fits the bill” for me. I am a true believer in directional felling as the Goal of Low Impact Forestry. Animal extraction is one component of low impact but if you can’t fell trees without needless residual stand damage your client/landowner will not get the full benefit of low impact using animal extraction. Directional felling is my #1 goal and practicing techniques and criticizing every stump is part of my learning. As for wedging smaller diameter trees I typically use mor of a Tounge and groove cut where I make the notch then bore in through the center of the notch to create a place on the back side to insert my wedge, The back cut involves cutting either side above the wedge leaving fibers above wedge attached, providing a way to drive the wedge without bottoming the wedge out on the hinge. The Game of Logging is a beneficial course that any person holding a saw should attend, many techniques and principles are discussed and practiced.August 24, 2009 at 3:36 am #53881TaylorJohnsonParticipantIt is hard to get someone who has been a production cutter for years to learn to slow down enough to cut proper for a horse and like you said if your not doing what it takes to get those trees were they need to be then you might as well be pulling them out with a 648 john deer. You take a cutter who’s job it was to put an average of 20 cords a day on the ground and he seas know sense in taking the time to put a tree down were you would ever need more than a cut club and a single wedge that would just be a wast of time to him. If he did something like that there would be a skidder breathing down there backs in know time. The big difference is that skidder can make up for poor placement just with pure power , ripping it up a hill tops and all what ever it takes to produce. I have had a hard time with cutters truly understanding the difference between a horse and a machine. Instead of stopping there thought on what there doing and relearning they try to modify what they know and in my opinion it is a different world ( horse VS machine) and some things transfer but most should be left behind with the skidders. If it takes 20 minutes or more it is better to take the time and put that tree in the right spot because if it is in the wrong spot it could take you a day to clean up the mess and maybe cost you a job. We use to cut off an average of 80 acres a week with are crews each crew of 3 men were suppose to av 100cords per 5 day week. That is 20 cords per day and av that there are a lot of days you have to hit that 40 45 cord mark. Now you take these guys that were pushed that hard for production and try to tell them to carry a 8lb maul and they just think you are nuts , they move way to fast for that. A friend of mine told me once that in horse logging fast is slow and slow is fast and if any one ever told me something true it was that . Proper placement is a huge part in getting any thing done and making what we do worth wile to the land owners even if it takes a long time to do it . I think this is a topic that gets over looked a lot buy folks in talk of horse logging . Taylor Johnson
August 24, 2009 at 11:56 am #53882TaylorJohnsonParticipantI worked with one old timer that used them. He was a good logger and new his stuff so I don’t doubt that there OK but I have never used them. In pine he did all his limbing with an AXE , he would drop them with a saw and then finish the trim job with an Axe. How are those wedges on a chain compared to the plastic? Taylor Johnson
August 25, 2009 at 12:21 pm #53868Carl RussellModeratorJoel;10787 wrote:Wow, no one has tried magnesium wedges?I had a couple back in the ’70’s when we first using saws with centrifugal clutches. I remember them working pretty well. One lasted me well until 1985-6. It seems that when you cut them they stand up a little better.
I just started buying plastic when they started being available.
I rarely have a wedge spit out. I drive them tight before I cut the trigger wood, and I always use two wedges when I have to pound hard, which may make the difference. I also use double taper, and 12″ wedges.
Carl
August 25, 2009 at 4:23 pm #53877near horseParticipantI know this never happens to you guys 🙂 but how would you handle it when you get a tree hung up on an adjacent stem? We used to yank the butt off the stump w/ a choker and machine (skidder, tractor, pick up…). Do you use your team for this when horse logging? Thanks.
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