Wirestop fasteners for cable

The dynamic vs. static thing is a bit false. Steel cabled limbs will still move, enough to cause adaptive growth is the real question to be answered. If you believe in touch genes then the question really is how much touch is required to initate them. It seems gentle movment ever the course of the year would be fine. Further if adaptive growth caused by Thigmomorphogenesis is different from reaction wood we can expect reaction wood formation to continue as we have not changed the angle of the limb and gravity.

I am not sure that drilling through a codit wall speeds decay. More correctly it allows for the spread of decay into areas that have been sealed off (hopefully). There were a few problems translating German into English. Lots of German words are not directly translated to an english word.
 
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Thigmomorphogenesis! Nice word, Guy.

[/ QUOTE ]Hey it's Andy who used the word (as you will see when you read it); it's all Greek to me. btw Detter's English is a whole lot better than many Americans' (present company on this board excepted of course.)
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His handout at expo was in english; no translator needed.

"the question really is how much touch is required to initate them. It seems gentle movment ever the course of the year would be fine. Further if adaptive growth caused by Thigmomorphogenesis is different from reaction wood we can expect reaction wood formation to continue as we have not changed the angle of the limb and gravity."

I generally agree.

"I am not sure that drilling through a codit wall speeds decay. More correctly it allows for the spread of decay into areas that have been sealed off (hopefully)."

which speeds decay by opening it up into new areas. No point in splitting wordy hairs here; bottom line is that a hole through a small young branch 2/3 up is not likely to become a significant defect.

O and the photo atop page 43--failure is blamed on the karate effect, which may be true, but it looks like it was another case of installing way too low.
 
Has anyone seen cobra systems deteriorate due to weather or animals (such as squirrels nibbling on the system)?

I saw Ken James at the ISA conference setup his gizmo on a palm in the University's campus center. Pretty cool stuff watching his equipment record the movement and stress of the palm blowing in the wind.

jp
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I also use Mini Cobra for small trees. The biggest enemy seems to be friction. Even a small branch rubbing on a cobra cable will cause it to chafe and eventually fail. Protectors of one sort or another are possible, but I find you are really just slapping a band-aid on. Cobra cables need to run from point to point clean with no threat of rubbing on anything, other cables included. Being able to splice cobra can often aid in redirection around limbs and stems.

I will say that of the many systems I have intsalled they do eventually girdle. However, it is usually time to adjust the height of the system anyway.

I have yet to see animal damage, but perhaps I have just been lucky.

Tony
 
re animal damage, at last year's expo detter said there was one (1) reported case of rodent gnawing.

The only cobra failures I have seen (2) were from chafing.

re wirestopped cables rubbing a holes' edges and slowing closure, one thought is to countersink a washer--into the bark and not the wood, per Ansi--and glue it in.

Wait, that sounds too whacky; there must be a downside.
 
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