Wind Sucks

[Lumberjack]

Originally posted by Rich Hoffman
Are you going to keep us in suspence or will you enlighten us on what mass damping is???

If you really don't know (which I doubt) it is the difference in the frequency that the limbs vibrate in relation to the frequency the truck vibrates, which cancle each other out to some degree, that is what I read recently.

I believe the dampining is aided by Newton's law of motion, "an object at rest, stays at rest until it is acted on by an outside force." The limbs add mass, that is spread out on a somewhat flexible pole (limb) and it absorbs the vibrations also, IMO, which is kinda like the above statement about diff in frequency.


Carl

 

[Lumberjack]

Originally posted by Rich Hoffman
Carl, where did you get your start. Is this a family owned business?

Nope, I started buisness the begining of the school year (4 months). My father and I started our stump grinding buisness 5 years ago, and I am part owner of that buisness, as I bought the RG 50 5 years ago.

Carl

 

[rahtreelimbs]

Originally posted by Lumberjack
If you really don't know (which I doubt) it is the difference in the frequency that the limbs vibrate in relation to the frequency the truck vibrates, which cancle each other out to some degree, that is what I read recently.

I believe the dampining is aided by Newton's law of motion, "an object at rest, stays at rest until it is acted on by an outside force." The limbs add mass, that is spread out on a somewhat flexible pole (limb) and it absorbs the vibrations also, IMO, which is kinda like the above statement about diff in frequency.


Carl

Pretty cool. You are right, I heard about the theory, just never heard of it being applied to treework.


Bottom up was the way I was taught. Leaving branches on seems to hang too much of the material up!

 

[rbtree]

What diameter was the top and how long?

I rarely take tops that heavy. I'll bet you are estimating way on the high side.

I'm not sure if I've ever used 3/4 inch to lower a top...in 30 years.

Recently we used the 9/16 to lower a 24 foot log length, about 8 inch small end and 10 large end, off another spar, so little shock loading. Likely it was double the weight of the top you took. Wish I'd gotten video, as we had to be a bit careful as there was a fence to stay above.
The rest of the sticks were craned over the house, 2300 board feet of fir from 6 trees, barely paid for the crane bill.

 

[Lumberjack]

"Bottom up was the way I was taught. Leaving branches on seems to hang too much of the material up!"

That can be used to your advantage tho if you plan it right.

If I coulda lowered off an adjacent spar I woulda used my 1/2" super braid, or the Black widow.

There was a tree, however it was at least 20' away so I would have to pendelum drop on the 5/8" or 3/4" and use a 1/2" tied to the butt and to the top of the pole to control pendelum swing, kinda like a drift line only slightly different.


Carl

 

[MasterBlaster]

Carl, my man, its all good. It sounds like you TCOB and collected the check. Thats why we put on our boots in the morning.

The IMPORTANT THING is that you learned what you did right, and you learned/felt/ $hityurpants over what you did wrong.

Slap that in your long-term memory!


And in the future, when you feel the need for a 3/4 bullrope, please see me for a proper demonstration.

 

[Lumberjack]

Originally posted by rbtree
Recently we used the 9/16 to lower a 24 foot log length, about 8 inch small end and 10 large end, off another spar, so little shock loading. Likely it was double the weight of the top you took. Wish I'd gotten video, as we had to be a bit careful as there was a fence to stay above.
The rest of the sticks were craned over the house, 2300 board feet of fir from 6 trees, barely paid for the crane bill.

No offense but according to my esta-mints it weighed about 475 if it was Pacific Silver.

The top was about 20' long with limbs and about 10" were I cut it, I bet I was mighty close on the weight.

 

[Lumberjack]

Originally posted by MasterBlaster
The IMPORTANT THING is that you learned what you did right, and you learned/felt/ $hityurpants over what you did wrong.


And in the future, when you feel the need for a 3/4 bullrope, please see me for a proper demonstration.

It wasn't a butt pucker-er, just unexspected thats all, I am might comfy on my rope around a spar.

I think this might have been a good time for the 3/4" there Butch, unexperianced groundy who hadn't dropped any tops before, only limbs and such, so I wanted the fudge factor to be high just in case.


Carl

 

[MasterBlaster]

Originally posted by Lumberjack


I think this might have been a good time for the 3/4" there Butch, unexperianced groundy who hadn't dropped any tops before, only limbs and such, so I wanted the fudge factor to be high just in case.


Carl

So take six steps up.

Use a 1/2 line.

Relax.

Enjoy!

 

[Lumberjack]

But that wouldn't be dropping the top, and I was at my TIP, so it made it a good place, and the wind was getting fun, like I said. In normal times I woulda done just that, but I wanted Derick as well as myself to have the experiance. It got him thinking even more than he already does.

What is TCOB?

PS I might come over during spring break and do some learnin, me and Derick.

Carl

 

[rahtreelimbs]

Do you think a 20' top was a bit much for a first run for a groundie? I know I wouldn't want someone with limited experience roping a top that big!

 

[rahtreelimbs]

TCOB...........takin' care of business!

 

[Lumberjack]

Yea, it might of been, but he did have exsperiance with other dynamic loads, I meant this would be his first top to hold by himself, without my help/ guidence, but he was up for it with regards to keeping it of the house tho.

Carl

 

[MasterBlaster]

Hang on and hope for the best!

 

[Lumberjack]

Re: thread title

Originally posted by RockyJSquirrel
Thought I'd clarify in regards to the title of this thread. I think wind actually blows, rather than sucks.

I need a new hobby.

I actually thought of that today also.

Carl

 

[murphy4trees]

Little late gettin in on this thread and I'd like to give some feedback on that hinge pic.... It is definitely a big step in the right direction. The hinge width, torn fibers, and slight taper all indicate a goog functioning hinge....
However, it's very deep, over half way through... I Am surprised no one mentioned that.... Looks like you may have had a bypass on the original notch cuts and then had to go a bit deeper to make a good clean notch...
From a functional perspective there is nothing wrong with a deep notch... and some fellers even cut notches deep, when trying to leave as much holding wood as possible....
The old standard teaching is notch goes 1/3 through wood... I think that got adjusted recently to somewhat less than 33%. It's a lot easier to cut a 33% notch than 50-60%.... So it's just faster and easier to make a shallow notch... I'l even go much less than 33% when all conditions are good..
That said.. Here's a question to think about.... What is the best way to prevent bypass on the facing cuts (notch)?

 

[rbtree]

Murph,

I think Carl needs to answer this...I cant tell if the face is on the left or right. If on the left, then what made that funny line, a chain pulling to the side? If on the right, then Carl made the backcut too low.

 

[murphy4trees]

I AM pretty sure the facing cut is on the right and the line on the right shows a former bypass in the original notch....
Hieght of backcut is another issue.... I was thinking the backcut on the near side of the pic could be a tad bit low, but it didn't bother me enough to mention... When felling in the woods or anytime the tree could hang up, making the backcut a little high is a good idea.... I don't see much advantage to a high backcut on clear shots... though some will say it provides some length for the hinge fibers to bend before breaking... and thus better control... They may be right, but its often not necessary...
I'd guess since you hang out with some serious old logger types, you cut an inch or two up on just about everything...

 

[Lumberjack]

The notch (i guess what yall call a face cut) was on the left, with the backcut on the right.

I have no clue what made the mark on the wood, but I noticed it after the tree went over. It wasn't the chain pulling, I know.



Carl

 

[Eagle1]

Still kinda deep for such a large stick. I always cut until I get to where I think there is no gravity unless we pull. If it is till stiff I cut more from back. we always have a line on. And on that windy day...ouch you had a 1" of heart fibers holding across the middle. But as all said. Done deal and have fun.

Hey. Happly Holidays to all. See you next week.