Heavy reduction

[spuddog0507]

did a heavy reduction today ? logs cut 6 x 2.5 O/S, 4 x 3.7mtr sawlog and 5 x 3mtr chip + top, tree was 1.24 mtr across at the bottom so pretty big for UK,

[spuddog0507]

1 hour ago, Big J said:

Monster tree indeed! Well felled sir

Well thank you kind sir, it had to be right J as i had Tilhills northern harvesting manager as a banks man at on end watching and Tilhills northern forestry manager as a banks man watching at the other end so no f--k ups on this one or the other 3 i did not like me dog shit cuts on some small birch and ash last wk, 

Edited October 30, 2018 by spuddog0507
spelling

[Khriss]

Think you left a bit at the bottom #BS3998 2012 k

 

(Good hinge tho ' )

[peds]

Hi, 

Question from an FNG here, I’ve seen this on a few stumps whilst walking around my local forest, and I was about to take some pictures and start a new thread to ask about it, but your photo illustrates it perfectly. I see you’ve cut out the center of the hinge (with a bore cut from inside the gob?), can I ask what that cut is called and what kind of situation you’d use it in? 

 

Many thanks for any knowledge you can share.

Edited October 31, 2018 by peds

[AA Teccie (Paul)]

A technique used where the chainsaw guide bar is smaller in length than the diameter of the tree. Hence you 'bore in' to the centre of the tree from the middle of the sink-cut / hinge and then, hopefully, match up when you bore in from the sides.

 

Hopefully someone else can explain far better than I having not used the saw for...a few years  

 

Cheers,

Paul

[Mick Dempsey]

Not only for a shorter bar length, it is used to weaken the hinge enough to reduce the pull needed to get it over, and reduce fibre pull for milling wood.

[peds]

Makes perfect sense, cheers dudes.

[AA Teccie (Paul)]

13 minutes ago, Mick Dempsey said:

Not only for a shorter bar length, it is used to weaken the hinge enough to reduce the pull needed to get it over, and reduce fibre pull for milling wood.

Well, ya learn summat new every day...many thanks for this Mr Dempsey

 

Hopin yer well,

Paul

[Mick Dempsey]

Ok, thanks Paul.

 

As Peds observed, it’s standard operating procedure over here.

 

The back cut does not necessarily have to match up completely (height wise) with the keyhole cut.

Edited October 31, 2018 by Mick Dempsey

[peds]

4 minutes ago, Mick Dempsey said:

As Peds observered, it’s standard operating procedure over here.

In France? Is it the sort of thing you’d be taught as a matter of course getting your French saw tickets? And I guess it’s more of a CS32 thing in the UK, as no one mentioned anything like it for my 31.

 

It would definitely have to be used for something other than the size of the bar, as I’ve seen it on the stumps of some tall-but-skinny larch and spruce, no fatter than 40cm.

(There’s some absolute horrors of a hinge on a few others, I’ll post a couple on the Rate My Hinge thread...)