friction device

Wadya mean by 'friction device'.

LOL just remembered an old guy my dad used to work with, every breakdown was attributed to 'the control module' regardless as to wether the machine even had a motor.
 
Mark used an srt system called a floating anchor. A block is connected to an ascender backed up with a hitch connected to the base of the tree with a grigri. He climbed traditionaly off of the block using a hitch.
 
wasn't the block some kind of groovy ratcheting mechanical advantage thingie? couldn't see it from where i was sitting but seems to me there was something very sailboatish about his belay point. coulda made that up i guess..
k.
 
I had a look in my local sailing shop the other day. Looked at Hexaratchets and other wonderful gizmos. One thing I found was like a hexaratchet but it only ratchets when under a specified load. It free runs in both directions until a certain load is applied, it then works like the hexaratchet.

I need to research them further when time allows but there are different sizes and the amount of load that triggers the ratcheting action is adjustable between certain parameters for each size of pulley.

It could be possible to have it free running while branchwalking in or out, then locking while in free descent and ratcheting while body thrusting. Could have some use. Has anybody already looked into these? Could save me from wasting time with it!

The sailing world seems to have a lot to offer for arborists, when is the hyraulicaly operated grcs coming out??

Sorry this is tree climbing comp section, I'm off to Ireland today for ITCC! See you all next week.
 
The biggest consideration when using cross-over gear is the applicability to our uses. In sailing they might not be running loaded ropes through the blocks which can
lead to friction on the sheaves. Also, make sure that the rope diameter and breaking strength fit our parameters.
 
The block Mark uses is not triggered by the load. It has a manuel switch converting it from rachet to free wheel. ( I have the same block). It has a max rope size of 9/16" tensile of 5,000lbs and a swl of 2,500lbs. Greg Good is working with Harkin on making products spicifically for arborist.
 
i have the masters challenge from pittsburg on video,it rachets but i never seen him change any mechanism.did amyone see franky chipps single line technique and where do u get that prusik friction saver from,probably made it.
 
Chipps' toy may have been self made but it is an Arbormaster gadget they call the 'weapon'. Use of it is termed the floating false crotch. I made one of my own. With equal sized rings, why cause I had two equal sized rings. /forum/images/graemlins/grin.gif
 

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err......well I try to splice as a hobby only. I know a guy who makes stuff for a local arborist supplier and he splices for most of his free time.....kind of like Nick I bet. I also shudder at the thought of liability if anything were to go wrong. That guy noted above has an incorporated splicing business to shelter his assets from any lawsuits. I would have no such benefit. Give Nick a post I know he's doing custom splices. He wouldn't even have to ship the rings, as you may have noted my rings are girth hitched as to not commit them to one task.
 
Actually I use a VT. If the 'weapon' has a pair of unequal rings you can pull the VT off the host line same as you would a FS. Only pitfall is it plummets to the ground as I am not aware of a way to use a throwline to pull it down with greater control.
 
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