Dr Storricks new tree devices

Ekka · 12th May 2007, 05:35 AM

Wierd device, I'd have to see that in action.

Once it's locked on ya in SRT can you drag it along with you or do you have to get your weight off it? ... Like a Gibbs or Shunt, they lock efficiently but you cant drag it along with you.

Tree Machine · 12th May 2007, 06:51 AM

Quote:

Originally Posted by Dr G.

and doesn't shred ropes like a Tibloc does.

I might as well get the SRT ascent thing out front and in the open.

This is how to use a tibloc without having it shred the rope; use it as a backup.

Tree Machine · 12th May 2007, 06:58 AM

Quote:

Originally Posted by Dr GDS

The underlying picture is Copyrighted ?2007 by Gary D. Storrick. I give permission to use photos and text from my site in this thread, but ask that you include the source and my copyright information. This isn't to be hard on anyone here, it is to preserve my rights to keep people elsewhere from selling copies of my site. Thanks! ----> Gary

Roger that and thank you.

Dr Gary, how many devices did you say you have in your collection?

Ekka · 12th May 2007, 07:11 AM

Can you drag that along with you as you work TM?

Hey, some interesting research I discovered. Many devices like this aren't rated the 22kn ANSI std for tree climbing. Interesting. And ropes are supposed to be 23kn.

Now here's a thought, a prussic will slide at around 800kg upwards, so although the prussic loop itself is perhaps rated 25kn it's not the actual holding strength in it's application.

So I noticed some of these devices slip at 3kn+ and the Tibloc is only 12kn breaking strength.

What say you about this TM? No can climb in comps etc? what's the deal with these devices and comps and ANSI???

gdstorrick · 12th May 2007, 04:50 PM

Quote:

Originally Posted by Tree Machine

Dr Gary, how many devices did you say you have in your collection?

As of yesterday, I have 994 that I've given numbers to and included in my database. Of these, 34 are duplicates. This is changing rapidly as I prepare it for display. Half an hour ago I finished building a double Allp but I haven't entered it yet. I have twelve items in transit from the UK, ten more from the Ukraine, three from Japan, and two from the US. When these all arrive, I'll be comfortably over 1000. This count does not include knots, carabiner rappel methods, nor other climbing gear like chocks, cams, ice screws, pickets, deadmen, etc.

...and if I had to climb a rope riight now, I wouldn't have anything to use....

-----> Gary (just Gary).

gdstorrick · 12th May 2007, 04:57 PM

Quote:

Originally Posted by Tree Machine

This is how to use a tibloc without having it shred the rope; use it as a backup

It does not always shred rope, but when used as the primary ascender and when climbing rapidly, people don't always get the tibloc "set" before loading it. This sets up conditions where it will sometimes really shred a rope.

Any ascender misused could ceonceivably cause rope damage, but with the Tibloc, it seems rather easy. We do not allow them in our climbing races for this reason. Used carefully (slow & steady), Tibloc's can be used without rope damage.

In caving we don't generally back up ascenders as you show, mainly because we use systems where the other ascenders will prevent falling ore flipping upside down, even of any one ascender fails. Then again, we cave for fun, so we ain't got no OSHA, only Darwinism. <grin>.

-----> Gary

gdstorrick · 12th May 2007, 05:01 PM

Quote:

Originally Posted by Ekka

Wierd device, I'd have to see that in action.

Once it's locked on ya in SRT can you drag it along with you or do you have to get your weight off it? ... Like a Gibbs or Shunt, they lock efficiently but you cant drag it along with you.

It is a belay device. I'd love to see it in action, but none of my friends were willing to take a fall on it. No one believed that it would work

I don't suggest that this device could be used as-is for your needs, I suspect not, but the idea of locking with a carabiner in a slot might be something to consider....or maybe not.....got other things on my mind....

----> Gary

Tree Machine · 13th May 2007, 07:35 AM

Chew on this one awhile:

A 3,000 word essay on how very simple friction devices can be. (13 mm New England Safety Vee, not hi-res)

Tree Machine · 14th May 2007, 09:44 PM

Here's a piece of metal, I'm not really sure what it is, but it does SRT descent pretty well.

The last three friction control devices, all together, cost under ten bucks, fully dispelling the myth that mechanical devices are expensive and complicated.

Tree Machine · 14th May 2007, 09:50 PM

Take another view of the previous piece:

Consider what modifications it would take to create a highly effective device. This is just a mental exercise.

Tree Machine · 14th May 2007, 10:04 PM

Look how straight-forward it is to change a piece (in concept).

Tree Machine · 14th May 2007, 10:11 PM

This,

can become this:

Tree Machine · 14th May 2007, 10:17 PM

Now don't get me wrong; I'm not suggesting anyone climb on any of these previous devices. There are better choices, besides, none of these last three will handle a doubled rope. None of them have an intrinsic soft lock. A soft-lock would have to be created.

A proper piece would have a built-in soft-lock. Also it would handle a single OR a doubled rope.

CNP · 16th May 2007, 06:49 PM

Quote:

Originally Posted by jim1nz

Dr Storrick, i have just been to your website and its hard to believe its you because your not a mortal like us are you? Absolute full credit to your achievements!

James

What is the website?

Tree Machine · 16th May 2007, 08:02 PM

Le collection....

jim1nz · 17th May 2007, 02:15 AM

Great TM im impressed, such simple devices but i can see how they would be so effective! Its actually nothing like i thought you were thinking of. So straight forward.

So where do you get all these devices from? Im such a hands on person, try it then access it and come up with something better. I need to get a hold of some of this hardware and have a look, a feel and a try!

12th May 2007, 05:35 AM	#26 (permalink)
Ekka Admin - Dip Arb & Hort Join Date: Jan 2007 Location: Brisbane Posts: 8,009	Wierd device, I'd have to see that in action. Once it's locked on ya in SRT can you drag it along with you or do you have to get your weight off it? ... Like a Gibbs or Shunt, they lock efficiently but you cant drag it along with you. __________________ Tree World Legal Fighting Fund\| Protect Your Rights to Freedom Of Speech\| Pledge Today Tree World Picture Competition\| $300 of Prizes Up for Grabs Free Tree and Green Industry Link Directory Qualified Brisbane Tree Lopping \| Stump Grinding and Stump Removal Brisbane Brisbane Tree Care, Consultations, Developer, Tree and Arborist Reports Forum Sponsors

12th May 2007, 07:11 AM	#29 (permalink)
Ekka Admin - Dip Arb & Hort Join Date: Jan 2007 Location: Brisbane Posts: 8,009	Can you drag that along with you as you work TM? Hey, some interesting research I discovered. Many devices like this aren't rated the 22kn ANSI std for tree climbing. Interesting. And ropes are supposed to be 23kn. Now here's a thought, a prussic will slide at around 800kg upwards, so although the prussic loop itself is perhaps rated 25kn it's not the actual holding strength in it's application. So I noticed some of these devices slip at 3kn+ and the Tibloc is only 12kn breaking strength. What say you about this TM? No can climb in comps etc? what's the deal with these devices and comps and ANSI??? __________________ Tree World Legal Fighting Fund\| Protect Your Rights to Freedom Of Speech\| Pledge Today Tree World Picture Competition\| $300 of Prizes Up for Grabs Free Tree and Green Industry Link Directory Qualified Brisbane Tree Lopping \| Stump Grinding and Stump Removal Brisbane Brisbane Tree Care, Consultations, Developer, Tree and Arborist Reports Forum Sponsors

17th May 2007, 02:15 AM	#41 (permalink)
jim1nz Mature tree Join Date: Jan 2007 Location: Tauranga, New Zealand Posts: 289	Great TM im impressed, such simple devices but i can see how they would be so effective! Its actually nothing like i thought you were thinking of. So straight forward. So where do you get all these devices from? Im such a hands on person, try it then access it and come up with something better. I need to get a hold of some of this hardware and have a look, a feel and a try! __________________ SPEED ALWAYS FOLLOWS TECHNIQUE

14th May 2007, 10:17 PM	#38 (permalink)
Tree Machine Over mature heritage tree Join Date: Mar 2007 Location: Indianapolis Posts: 575	Now don't get me wrong; I'm not suggesting anyone climb on any of these previous devices. There are better choices, besides, none of these last three will handle a doubled rope. None of them have an intrinsic soft lock. A soft-lock would have to be created. A proper piece would have a built-in soft-lock. Also it would handle a single OR a doubled rope.

16th May 2007, 08:02 PM	#40 (permalink)
Tree Machine Over mature heritage tree Join Date: Mar 2007 Location: Indianapolis Posts: 575	Le collection....