myrtle
ArboristSite Lurker
Myrtle, what is the biggest turn those machines can handle rigged like that?
I can understand putting a brow log just behind the idlers, I do that when throwing logs on a grade.
For comparison. On average day I can fell and buck three loads, grapple log it out to say 5/6 throws, bump the knots and deck it.
On previously cut timber where all I have to do is log it and bump the knots, I can get 6 loads/day pretty easily.
That puts my loads/man rate at 2/3 (on average).
Where I really fall down is on the deep holes and long corners where it might take me a couple hours pulling stumps and digging a track berm to log out two or three turns. Thats where I'd like to be able to use a drum set up.
The set up I was looking at mounted the drums, (smaller cap.) on the boom, one on each side. I might have a pic of it. Will look.
Regardless, I have logged with just about every kind of set up imaginalble and have never seen anything that compares to the cost effectiveness, minimum crew, and easy, than a grapple shovel.
Turns average two 40' logs. They can usually handle up to a 30" DF forty. Thats about as big as it gets on BLM. Well 'till our new management plan goes into effect and we can get away from the Northwest Forest Plan..... (maybe)
Yeah, you can't beat shovel logging for efficiency on good ground. I could see how some drums and a simple shotgun or mechanical carriage could allow you to save a bunch of time and effort by yarding long corners or steep draws to a swing landing in the brush. What I see on our thinning sales is half of what the Yoder is capable of doing. It could be pretty slick to use a single tailhold and walk the machine along a ridge, yarding as you go without restringing lines.
If I could dream with someone else's money, Eagle does make a Yoder-sized grapple carriage with a video camera on it....