Some things moving

[slack ma girdle]

Jack came from Chris Forestry

Hydraulic Wedge or Prying Arm Armstrong 30 t

WWW.CHRISFORESTRY.CO.UK

---

The hydraulic wedge or prying arm allows the felling of big trees (from 45 cm diameter at chest height) without a lot of...

yep have always put the jack seat in first ,  it has always always made sense to support the tree first before putting in the mouth.

 

 

[Donnie]

On 15/11/2023 at 23:01, slack ma girdle said:

Jack came from Chris Forestry

Hydraulic Wedge or Prying Arm Armstrong 30 t

WWW.CHRISFORESTRY.CO.UK

---

The hydraulic wedge or prying arm allows the felling of big trees (from 45 cm diameter at chest height) without a lot of...

yep have always put the jack seat in first ,  it has always always made sense to support the tree first before putting in the mouth.

 

 

You've deep pockets. Haha. 
 

I just use a 20T off of eBay and does fine but how much heavier is this 30T? Would be good to have knowing you'll put just about anything over. Sometimes have to use 2 20 Tons to get some of our trees over. 

[slack ma girdle]

56 minutes ago, JDon said:

You've deep pockets. Haha. 
 

I just use a 20T off of eBay and does fine but how much heavier is this 30T? Would be good to have knowing you'll put just about anything over. Sometimes have to use 2 20 Tons to get some of our trees over. 

What you are paying for is a certified jack designed specifically for tree felling. If it goes wrong you will still be covered by your insurance.

The only tree i haven't jacked over the wood of the tree failed not the jack.

 

[Spruce Pirate]

1 hour ago, slack ma girdle said:

What you are paying for is a certified jack designed specifically for tree felling. If it goes wrong you will still be covered by your insurance.

The only tree i haven't jacked over the wood of the tree failed not the jack.

 

 

Non tree specific jacks have been used for felling for ages and have finally been recognised by the powers that be.  Provided certain criteria are met the jack falls within the allowed scope - you can't modify the jack but it must have a removable top plate which can't deform and must have a collar attached.  

FISA Technical Note 001 _ Tree Jacking - August 2021 (1).pdf

[slack ma girdle]

11 hours ago, Spruce Pirate said:

 

Non tree specific jacks have been used for felling for ages and have finally been recognised by the powers that be.  Provided certain criteria are met the jack falls within the allowed scope - you can't modify the jack but it must have a removable top plate which can't deform and must have a collar attached.  

FISA Technical Note 001 _ Tree Jacking - August 2021 (1).pdf 7.27 MB · 20 downloads

Thank for that,  thats a bit of bold forward thinking from FISA

[Donnie]

Insurance... I don't have any but I only really fell in big forests etc for one big contractor so I'd guess we are covered from them....

 

 

Maybe I'll push the boat out and buy one of those jacks in a few months. 

[slack ma girdle]

49 minutes ago, JDon said:

Insurance... I don't have any but I only really fell in big forests etc for one big contractor so I'd guess we are covered from them....

 

 

Maybe I'll push the boat out and buy one of those jacks in a few months. 

It's a shame you are the wrong end of the country, otherwise you could borrow it and see how it compares.

[slack ma girdle]

51 minutes ago, JDon said:

Insurance... I don't have any but I only really fell in big forests etc for one big contractor so I'd guess we are covered from them....

 

 

Maybe I'll push the boat out and buy one of those jacks in a few months. 

Have you come across Calum Duffy, he has loads of different jacks, it would be worth chatting to him.

And no doubt @Spruce Pirate has had a little experience with them.

[Donnie]

Aye I've spoke to him a few times on Whatsapp or Messenger. 
 

Might buy it after Christmas tbf as it's all I really do is jack trees over. How much lift does that Chris Forestry one do?

[slack ma girdle]

7 minutes ago, JDon said:

Aye I've spoke to him a few times on Whatsapp or Messenger. 
 

Might buy it after Christmas tbf as it's all I really do is jack trees over. How much lift does that Chris Forestry one do?

It's rated at 30 tonnes .

If you want to treat yourself to a Christmas present,  have a look at the Bontrager jacks in Oregon

Borntrager Tree Jacks – Serving the logging and timber industry

WWW.BORNTRAGERTREEJACKS.COM

---

Serving the logging and timber industry