rbtree

The ATOP system is different...uses a goofy file, not the normal file for square filed full chisel. I've been square filing my 3/8th pitch chains for years now. I'm finally fairly good at it. Finally got some good files. The company will also renew dull files for about $1 each, and can renew a file several times.... Someone claimed the chains are different. They're not, only difference is the grind. Appx 8% faster than round ground. Round ground can be made a bit faster by filing deeper into the gullet, but that produces a sharper angled point, which will dull quicker. I find that square filed chain stays sharp plenty long. I also use full comp, semi-skip, and full skip chain, depending on bar lengths.

Read my post....

I meant trig, not trip function calc's.....

Good question, Angus....Now that you bring that up, I see that using the Tirfor's attached to the main line via a prussic, and the dyno between the tirfor and its anchor is a logical method to determine the amount of line tension to apply. It was that article where I first heard of Graeme (well, the version of it that ran in a US arb publication anyhow.) Back then, I thought he used two Hobbs as the lowering devices. At that time, it was before Greg had invented the GRCS. I was and still am way impressed with that job, and how Graeme employed such technically advanced rigging, down to the specially made sheaves for the blocks, special rope order, the calculator in the tree for the trip function calc.....and on and on! It was a thrill to meet Graeme not long after, at the 2002 ISA conference. Plus, he came out to my jobsite, strapped some of our gaffs on over his tennie runners, asked what the heck the toy 335 Husky was that I handed him to brush out a 130 foot doug fir (well down to 90 feet, which we craned for log sales later) then showed us his 20 minute video in the customer's house, prior to driving off to the airport for the trip back home.

Never had a similar retrieval not work, since I started locking the hitch assembly with a "marlin" and pulling it up past any possible entanglements. It's a nice trick that all should know, and one that I learned ages ago.....

This thread farking rules!! I've already posted this elsewhere twice...thought I'd found the lunge thread, but it was just a pretender

Nah, we usually tie in twice. That was Eli, who I hired for that job. He now runs his own biz, but I trained him. As you can see, he wasn't cutting anywhere near his lifeline. I think he pulled that trick to get the lead away from his body, as well as assure that the stem didn't swing into him after the cut was done. Those were some trees, ~145 footers, 7, 6, and 5 feet in diameter.

Thanks, goomer! Took me a while to find the thread, which is hilarious!

You Brits really are hilarious!! Love it! Here's 6'4"Eli's lunge....but done with aforethought and purpose...

Thank you, sir!

Nice work and images... Can you tell us the genus and species, please? I should know, but can't quite tell fo sho......

Bump....time to boost me ego? I turned 60 last summer, and still a climbin' fool....though the knees doth protest, gol dang it....no skiing this winter for me, which sucks donkey ballz. I posted more of these on a different thread just now as well.... Our recent cold snap worked to my advantage on a tree job, as it allowed us to fall 6 big cottonwoods on a playfield, and drive the chip truck right to them, and a rented Bobcat for the wood. All 60-70 yards worth of wood...and 55 yards of chips. I have yet to edit the photos and video, stand by......

Went back to the waterfalls, to meet my fantasy girl (post#19), but alas, she was nowhere to be found....or bundled up, eh?! Brrrr Enjoy!! Frozen Snoqualmie Falls For individual photos, edit out the "show" or just be satisfied with these few...

Yep, I brought my 3120 to the owner Keith's shop, and he fitted his custom design muffler (needed for clearance) and, of course, the AM, to my saw. I've had the AM for 2.5 years now. That's my stock 3120. It's prolly a tad louder than the stock muffler, but nothing like my fully woods modded saw, which has twin 1" front firing ports, which sets fir bark a sparkin', with ease and aplomb!! But I wouldn't want the stumper to be louder. It gets on my nerves, and no doubt, anyone within 14 mile, as it is run constantly......

Hah, try 13 hp......maybe 13.256388.... or thereabouts.

There is no comparison, especially with the new 50 cc 346 out. It walks all over the 260. But it's a tad heavier. The 260 is a proven design, 20 years out, but old tech compared to the new 362, which is strato charged. All old saws will eventually be gone, at least in the US, as the EPA regulations take full effect. The strato charged saws run leaner and cleaner, are a tad heavier, seem to have good power and torque. But, since I personally run mostly fully wood ported saws, I like my old saws. And have enough in the stable to last for many years. My worked over 346 will cut with a bone stock 441 or 440 and hold its own, as long as the wood is not huge. It's a joy to use, with all that power and light weight, and smooth shape to boot. Next best 3 cube saw is the Dolmar 5100, then maybe the Shindaiwa 488 (the lightest of the bunch at 10 lb) followed by the 260, imo.

It could have been pieced out, but not felled. Canopy was immensely wide. Plus, the drag around the house looks rather narrow. Di you see all 24 pictures? Sure was a cool tree. Didn't look very diseased....

Jib? It is stowed on the hydraulic crane attached to the boom. The crane supporting the truck is a lattice boom crane. Has to be set up onsite. Takes a long time. But lattice booms are light and capable of lifting a lot of weight when the boom is at low angles. Likely they didn't have any other cranes in their fleet that would work.

You got that right, skyhuck.... I'm bidding on a giant black cottonwood, that will absolutely require at least a 100 ton crane. Dunno yet if we can work on XMAS break weekdays when there's no school busses, but it will be two days with the crane either way. Bid will come in at $15-23,000!!! (no overtime required on weekdays)

Yup, a great job...but it took nearly 5 days, Georgio said. I can see why. I'm assuming you were joking, but had to chime in:001_smile:

sorry, it had already posted

The whole discussion is at the TH, for those inclined to visit. go near the end to see pics of the recovery, which took till 3 pm today Santa Rosa, Calif - The #1 HARDCORE arborist forum, bar, and grill - Enjoy the buffet and libations! Crane smashes through Santa Rosa house | PressDemocrat.com | The Press Democrat | Santa Rosa, CA Today's article, same video as yesterday's Crews lift boom from wrecked house | PressDemocrat.com | The Press Democrat | Santa Rosa, CA 24 photos here: Gallery - News | PressDemocrat.com | The Press Democrat

A bit of video...ignore the part where I said the tree has phytophthera-twice.... It's verticillium, of course. [ame=http://www.youtube.com/watch?v=oIzqk9sC-2w]YouTube - Huge old 7 foot maple, deadwood removal[/ame]

Ouch.... I was glad to see the smilie, Mr. Ed. Hate to think you were the brunt of that carnage... or your insurance company.

When the video comes up, you can click on chapter 3 on the right side. At about 3 minutes in, the good footage of the construction starts. Ignore my 8 minutes in comment in the first post. There's lots more great footage as well, that even a non-skier might enjoy.